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SMS won’t send

What to do if Galaxy S8 won’t randomly send text messages [troubleshooting guide]

While some people may find out that their phone may not be able to send texts at all, others may realize that their own device may do it randomly. In this troubleshooting article, we try to give troubleshooting steps and solutions if a #GalaxyS8 is unable to SMS randomly. If you’re one of those who happen to experience this issue, below are the solutions that you should try.

Before we proceed, we want to remind you that if you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page. When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Today’s problem: Galaxy S8 won’t randomly send text messages

I just updated my phone and it seems to randomly not send texts to people but does not show up as failed on my end. Multiple contacts with different phones and carriers. It looks like it went through fine, but I’ve had my friends send screenshots of what they’ve gotten and half of my texts are missing. I’m getting all of their texts. I have screenshots of what it looks like on my phone vs their phones, if that helps. Not sure if this is remotely related, but when my friend added me on Whatsapp, his profile showed his correct number but the profile name was some random coworker of mine that he doesn’t know. When I checked my coworker’s info on my phone contacts, she had her correct number under the nickname I’d originally put her under, but there was also a separate contact with her full name (which I don’t believe I’ve ever added into my phone) with my friend’s number instead. The same friend’s number is ALSO on his correctly named contact profile. I’m horrified that she might be getting these messages to my friend. Other weird minor annoyances have suddenly popped up with the update, too, like unwanted letters or words getting entered while I type/Swype on my phone, or duplicating words/letters, across all apps. It’s like the update my phone. — Kathleen S. Whitcomb

Solution: Hi Kathleen. There’s a number of possible reasons why you have this type of messaging problem. Let’s discuss each of them and how to fix the problem. Before you do any of the solutions below though, we suggest that you restart your Galaxy S8. Many minor bugs are fixed by turning the system off for even just a bit. That’s because some bugs may only develop after a system has been running for a long time already. If you don’t usually restart your device regularly, be sure to do this simple troubleshooting step. After you restart your phone, use it for a few days and observe how messaging works. If the random issue you’re experiencing still remain, go ahead and do the possible solutions below.

Refresh the system cache

Android sometimes encounter errors or manifest glitchy performance due to corrupted system cache. To see if your problems are due to a bad system cache, you want to clear the cache partition. Doing so will delete the current system cache and will force your S8 to create a new one over time. To clear the cache partition:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  4. Press the Volume down key to highlight “wipe cache partition.”
  5. Press the Power key to select.
  6. Press the Volume down key to highlight “yes” and press the Power key to select.
  7. When the wipe cache partition is complete, “Reboot system now” is highlighted.
  8. Press the Power key to restart the device.

Force stop messaging app

Should clearing the cache partition won’t change anything, your next move would be to deal with the messaging app directly. There are three things that you can do about it. The first one is to by restarting it, though it doesn’t involve restarting the entire phone. Here’s how:

  1. Open Settings app.
  2. Tap Apps.
  3. Find the messaging app you’re using (can be Samsung Messages app or third party).
  4. Tap FORCE STOP button.

Clear cache and data

The two other troubleshooting steps that you can do with your messaging app is to clear the cache and its data. You should do this if your Force stopping the app won’t work at all. To clear your app’s cache and data, follow these steps:

  1. Open Settings app.
  2. Tap Apps.
  3. Find the messaging app you’re using (can be Samsung Messages app or third party).
  4. Tap Storage app.
  5. Tap Clear Cache button.
  6. Restart your device and observe how messaging works for as long as necessary.

If the problem returns after clearing the cache, your next move would be to clear its data. Keep in mind that clearing the data of the messaging app will delete your messages as well so be sure to back them up before you proceed.

To clear a messaging app’s data, repeat steps 1-4 and tap Clear Data button.

Force close and clearing of cache and data can also be applied to your keyboard app to see if there’s an issue with it as well..

Toggle Airplane Mode

Some network problems are fixed by simply toggling Airplane mode on and off. Be sure to do it to see if this will fix your issue. In order to know if this step is effective, make sure to use your phone for at least a day before doing other troubleshooting steps.

To access Airplane Mode:

  1. Pull down the screen from the top.
  2. Find Airplane Mode and tap it. This will enable Airplane Mode. Wait for 5 seconds before tapping Airplane Mode again to turn it off.
  3. Restart your S8 and observe it.

Reset network settings

If the problem is still happening after doing the suggested solutions above, your next step is clear the device’s saved network configuration. Don’t worry, this one will only affect the network aspect of the device such as saved wifi, mobile data, VPN and other network settings so your data should be safe. To wipe your S8’s network settings:

  1. Open Settings app.
  2. Tap General management.
  3. Tap Reset.
  4. Tap Reset network settings.
  5. Tap RESET SETTINGS button.

Try another messaging app

Ideally, the problem should already be fixed by now but if it still remains at this time, you should consider using another messaging app. There are many apps that you can get from the Play Store so be careful with your pick. Try to use an app from a reputable developer to avoid installing malware into the device.

Boot to safe mode

Sometimes, a bad third party app may cause problems. To see if one of your installed apps is the reason why your S8 appears to randomly not send messages, you need to run it on safe mode. Safe mode blocks third party apps so if the problem won’t occur, that’s a clear indication that you have a problematic app. Here are the steps to boot your S8 to safe mode:

  1. Turn the device off.
  2. Press and hold the Power key past the model name screen.
  3. When “SAMSUNG” appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. Safe mode will display in the bottom left corner of the screen.
  7. Release the Volume down key when you see Safe Mode.
  8. Let your S8 run for at least 24 hours. Be sure to try to replicate the issue by sending as many texts as possible. If your messages will work properly, then that means an app is to blame. We don’t know how often this issue occurs but let your phone run on safe mode for as long as possible.

Remember, safe mode won’t pinpoint the exact app. If you think an app is problematic, you’ll have to invest more time narrowing down the possible causes by uninstalling and observing the phone after each uninstall. Do this cycle until the issue is resolved.

Install carrier updates

Most network bugs are fixed by installing updates. Make sure to check for pending updates manually if you disabled automatic updates on your S8 before. To do that, just go under Settings > Software update and tap Download updates manually.

Contact your carrier support

Should the issue persist after you’ve performed everything in this post, that means that the problem is network-related. Everything mentioned above are meant to address a wide variety of aspects on your device. Since doing them did not fix the issue at all, only your carrier should be able to help you from here on.  


Engage with us

If you are one of the users who encounters a problem with your device, let us know. We offer solutions for Android-related problems for free so if you have an issue with your Android device, simply fill in the short questionnaire in this link and we will try to publish our answers in the next posts. We cannot guarantee a quick response so if your issue is time sensitive, please find another way to resolve your problem.

If you find this post helpful, please help us by spreading the word to your friends. TheDroidGuy has social network presence as well so you may want to interact with our community in our Facebook and Google+ pages.

Galaxy S7 not receiving SMS using stock messaging app, showing blank blue screen, other issues

Hello Android fans. We know that a lot of members of Android community are now using the #GalaxyS7 around the world so it’s not really a wonder that there’s an ever-increasing number issues related to this device. Our blog keeps getting requests for assistance every day so we hope that this post will help some of you out there.

If you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page.

When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Below are specific topics we’re bringing for you today:

Problem 1: Galaxy S7 keeps overheating, works fine when in safe mode

The battery gets hot and phone resets. I rebooted in safe mode and it stopped resetting. I deleted most recent apps, but it would still reset. The only time it did not reset was when the phone was in safe mode…or when in normal mode with airplane mode. I am outside of the USA. Anytime I turn on the wifi to get an internet connection, the phone battery will get hot and within a couple minutes it resets. — Justin

Solution: Hi Justin. One of the results of an overheating phone is untimely reset. That’s a built-in mechanism to prevent heat from damaging the motherboard. If your phone won’t overheat in safe mode for an extended period (we assume you’ve already tried it before contacting us), that’s a clear indicator that a third party app or service is hogging resources causing the system to eventually overwhelm itself. Apparently removing recent apps is not enough. You should continue to eliminate possible problematic apps until the overheating issue stops. Once the phone stops overheating, that’s the sign that the buggy app has been removed from the system.

Problem 2: Galaxy S7 not receiving app notifications after an update

Hi. Since I did an update on my S7 a couple of months ago, I’ve stopped receiving notifications from apps. I do get text messages, missed calls. However, I’ve stopped receiving WhatsApp, Snapchat, Twitter and emails. Last year when I did the update, I stopped seeing contact names when they called. This recent update corrected that. But, has stopped my notifications. If I go into the apps, I can see my messages. But, it never comes through. My Gmail might come through, but only if I open the app, with for a few seconds then exit. This doesn’t work for Outlook or Snapchat though. Thank you for your time and assistance. Kind Regards. — Anandraadams

Solution: Hi Anandraadams. The first thing that you want to do is to wipe the cache partition. This will clear the current cache and replace it with a new one. Sometimes, updates and app installation can corrupt this type of cache so it’s good if you can deal with it first. Here are the steps to do that:

  1. Turn off your Samsung Galaxy S7.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe cache partition.’
  6. Once highlighted, you may press the Power key to select it.
  7. Now highlight the option ‘Yes’ using the Volume Down key and press the Power button to select it.
  8. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

Sometimes, installing app updates can also fix post-Android update issues. Make sure that you only install updated and compatible apps.

If that won’t help either, do a factory reset. Refer to the steps below.

By default, apps should make sound notifications after a factory reset. Make sure to go under Settings>Notifications to check if sound notifications for your important apps are set properly.

Problem 3: Galaxy S7 edge screen remains black, won’t turn on

I have a Galaxy S7 Edge with some issues. Currently my phone has the black screen of death so I can’t see the screen display. I’ve tried to hard reset the phone and when I do the screen is still black, but the blue light that usually lights up is there. I’ve tried to turn the phone off to try to manually factory reset it but I can’t turn it off. So I think that the touch screen is unresponsive.

When I press the power button as if I were to wake the phone the LED touch buttons at the bottom light up, but a brief green flash appears on the screen and disappears. I also had issues with my display before the black screen of death. Before this issue, I had to keep the screen on auto brightness turned up to 100% otherwise there would be green with a double vision like purple display. The lower the brightness the worse it got. So I tried to restart the phone, which ended up in the black screen of death and my unresponsive touch screen. I have no idea what to do. — Dakota

Solution: Hi Dakota. There’s nothing much that you can do about this issue. If the screen remains dead even if you try to boot the device to alternate modes, that means that the screen assembly is broken. You need to have the device checked so it the hardware can be assessed. The most likely outcome is a screen replacement. If your phone is within the warranty period, make sure to take advantage of whatever freebie you can avail.

Problem 4: Galaxy S7 keeps getting a blank blue screen and moisture detected error

My S7 edge was getting a blue screen blank and it is less than 3 months since I bought it. I had to drain the battery and completely recharge it to get it to work. It is continuing to do this at random. It seems like a software glitch. It’s like the screen of death!! Keeps saying there is moisture in the USB port and then won’t charge but took to the phone store and no moisture in the phone on the indicator. But they won’t do anything either. Honestly I can’t tell you the version because it is dead again Frustrated!!! — Geoffrey

Solution: Hi Geoffrey. Your Galaxy S7 has water resistance protection and part of that protection is the moisture detected warning you’ll get when the system detects moisture in the charging port area. As long as the device is reading that there’s moisture in that part, it will never charge by cable. If your phone was never near water recently and you’re 100% positive that there’s no moisture in the charging port, then it’s possible that the system is getting incorrect readings from the charging port. Keep in mind that smart as your phone is, it’s not that smart enough to actually check if the reading it receives from the charging port is true or not.

The erratic moisture detected error and the random screen of death issue may be signs of some deeper hardware problem so if a factory reset won’t fix them, send the phone in.

Below are the steps on how to factory reset your device:

  1. Turn off your Samsung Galaxy S7.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe data / factory reset.’
  6. Once highlighted, you may press the Power key to select it.
  7. Now highlight the option ‘Yes — delete all user data’ using the Volume Down key and press the Power button to select it.
  8. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

Problem 5: Galaxy S7 edge keeps overheating, keyboard not working

Good evening. I’ve recently bought a Samsung Galaxy S7 Edge in Germany, and moved in to Brazil. Today, my phone’s keyboard all of a sudden stopped showing up. As I start the phone, everything else in the phone – every app, even the keyboard’s app – still works fine. But then, the phone restarts and get really hot in a specific area of the phone. I’m desperate, I have thousands of pictures which are really important to me there and aren’t synchronized with the cloud. I’ve restarted the phone countless times and wiped the cache out to no effect. I’ve also restarted the phone in Security mode, only to experience the same issue. If you think that a hard reset is necessary, is there any way I could retrieve my data? — Pedro Angst Maciel

Solution: Hi Pedro. You need a working touchscreen to allow an external device like a computer to access files in the phone. The phone also has to stay on long enough to allow the transfer to files to finish. If both are not satisfied, you can’t really create a back up of your files.

Try to bring your phone to your local shop and see if there’s anything that they can do about it, especially regarding the overheating issue.

Problem 6: Galaxy S7 mobile data is spotty, SMS won’t send

Just recently started having issues with my phone in the last couple weeks or so. Data is suddenly very sketchy in places where I never had problems before, like at my office downtown. Try to get on Facebook or something else and just get the “loading circle.” So I turn on the WIFI at the office and internet works fine but then I am unable to send any texts unless I turn the wifi off. If I attempt to send a text with the wifi on, it just says “sending” with the loading circle and it will do this forever, or until I turn off the wifi. I have never had these kinds of issues before and am not sure what is going on.

Also, I used to have full bars at my office, now only a couple. Not sure what is going on. — Jess

Solution: Hi Jess. If basic software troubleshooting like a cache partition wipe and factory reset won’t help, then the problem is either network related, or something with the phone. We suggest that you contact your carrier so they’ll know that you’re getting weak signal in an area with a previously good coverage. You also want to let them to help you with that text sending problem.

If they’ll say that everything’s good on their end, then it’s most probably a phone issue. Make sure that you do a factory reset and install Android updates afterwards. If both procedures won’t work, consider getting a new phone.

Problem 7: Galaxy S7 not receiving SMS using stock messaging app

S7 stopped receiving texts. I’ve done everything short of a factory reset. Which really I don’t have the time for. But the issue is fixed when I download a third-party messaging app. all the sudden my text work and it even sinks them into the stock messaging app. But once I uninstall the third party app Go SMS Pro, all the sudden I get no texts again and the stock messaging app stops working again and I get a message up that says messages has stopped working.

I uninstalled Go SMS Pro just to check and see if maybe my text were working again so want to go pay a bill and at the moment when I’m expecting the text that payment was received instead I receive a message saying messages has stopped working on my Android touch screen. — Vertimusmaximus

Solution: Hi Vertimusmaximus. Make sure that you delete the messaging app’s cache and data first. Here’s how:

  1. Open the Settings menu either through your notification shade (drop-down) or through the Settings app in your app drawer.
  2. Navigate down to “Apps”. This may be renamed to something like Applications or Application Manager in OEM skinned versions of Android 6 or 7.
  3. Once in there, click on an application.
  4. You’ll now see a list of stuff that gives you information about the app, including Storage, Permissions, Memory Use, and more. These are all clickable items. You’ll want to click on Storage.
  5. You should now clearly see the Clear Cache and Clear Data buttons for the application.

If that won’t fix the issue, restart the phone to safe mode and see if the stock messaging app works. Safe mode blocks third party apps and services so it’s a good way to know if an app is responsible. Below are the steps to boot to safe mode:

  1. Turn your Galaxy S7 off.
  2. Press and hold the Power button.
  3. Once the ‘Samsung Galaxy S7’ logo appears, release the Power key and immediately press and hold the Volume Down button.
  4. Continue holding the button until the phone finishes rebooting.
  5. Once you see the text “Safe mode” at the bottom left corner of the screen, release the Volume Down button

If it still fails to receive SMS, that’s the time that you want to do a factory reset.

Problem 8: Galaxy S7 froze showing a black screen

Hello. I have a problem with my phone. I was having trouble connecting to my internet so I told my phone to restart. Sometime while it was restarting it froze on a black screen while the notification light was blue. tried holding all the power home and volume button combinations I could think of and find with a google search and eventually lead me to your page. Please let me know what I can do. Thank you. — Sheldoncheeks69420

Solution: Hi Sheldoncheeks69420. You should try to do a simulated “battery pull,” also known as soft reset. Here’s how:

  1. Press and hold the Power and Volume Down buttons until the Maintenance Boot Mode screen appears (approx. 10 seconds).
  2. From the Maintenance Boot Mode screen, select Power down. Utilize the volume buttons to cycle through the available options and the Home button (located below the display) to select.

A soft reset should force the phone to restart to normal mode. If that won’t help, do a factory reset via Recovery mode. Check the steps above.

Problem 9: Galaxy S7 stuck in boot loop, screen remains black

While charging I got a Whatsapp message. then I opened and read it, suddenly it goes tinted blue screen. I removed it from the charger and I tried to restart it. when I press and hold power button for around 20 seconds, I got the logo and after 1-2 seconds it disappears. I keep on doing this, but my problem is, I can’t  see anything, but I got message notification sounds. the notification light blinks, I don’t know what is the problem. but I am unable to see the screen, but I am able to boot to recovery. Please let me know the solution. — Srikanth

Solution: Hi Srikanth. Your phone may have become stuck in Samsung logo page, or doing a boot loop. Since we don’t know the full history of the device, there’s nothing much that we can say. However, if this issue started after you installed an update, or after flashing or rooting, you may to do a more drastic solution. That solution is to try and flash the bootloader and/or firmware back to stock. Below are the sample steps on how to flash a bootloader. They are provided here for demonstration purposes only so be sure to do your own research on how to flash a bootloader for your particular phone model.

  1. Look for the correct firmware for your phone model and download it. Make sure that you select the right one. It should be the same exact firmware that ran previously on your device. We assume that you list down the firmware version somewhere. If you did not take note of it before, there’s a chance that you may pick the wrong one. As you may know now, using an incorrect firmware can cause complications so good luck with that.
  2. Let’s now say that you have identified the correct firmware. You then want to download it to your computer. The firmware file should have a bunch of files in it like AP_, BL_, CSC_, etc.
  3. Look for the file that starts with a label BL; this should be the corresponding bootloader file for this firmware. Once you’ve identified the bootloader file, copy it to your computer’s desktop or to any other folder that you can easily access.
  4. Proceed with the rest of the flashing procedure using the Odin program.
  5. In Odin, click on the BL tab and make sure to use the bootloader file you’ve identified earlier.
  6. Now, make sure that the “Device Added” status and its “ID:COM box” has turned blue before hitting the START button. This will initiate the flashing of your phone’s bootloader.
  7. Restart the phone once the procedure is finished.

Problem 10: Galaxy S7 not receiving calls and SMS

So my phone was doing fine for the first 3 weeks until my phone started getting issues. I would be able to text people and call them but not receive texts or calls. Sometimes I would be able to receive some texts but hours later when it was sent. Now, my phone doesn’t receive neither text messages or phone calls. I tried resetting and taking out the SD card, but didn’t work. I checked to see if it had to do anything with an app but it wasn’t that either. Also checked to see if it was on block mode but it wasn’t. If you can help that would mean a lot. Been trying to fix it for a couple of days now with no help. Maybe there’s a setting I new to change. I don’t know. — Alec

Solution: Hi Alec. If your phone was able to receive calls and text before, then it’s either a device configuration issue, or something network-related. Contact your carrier and ask help on how to reconfigure your device (assuming their network is working fine at this time).

Problem 11: Galaxy S7 won’t detect 2 SIM cards

I have been using my phone since April, 2016 when I bought it. All of a sudden, 2 weeks ago, the 2G compartment stopped connecting to network. It refuses 2 SIM cards activeness on the phone and as such disrupts my call and browsing activities. The phone did not fall, I just can’t understand what’s happening.

Meanwhile, if I insert the SIM cards in other phones, they work well but in my S7, I can’t make calls, send messages, receive calls or browse with either of my two SIM cards . The network signal for the 2G compartment disappears, indicating 2 SIMs can’t be active at same time. I got your mail address from a Samsung forum Casey.  — Caseygem4u

Solution: Hi Caseygem4u. If you’ve already tested two known working SIM cards on this phone, then that’s a clear indicator that something is not working properly on the device. Make sure that it’s running the latest Android version by installing updates. If you are an adventurous type and recently flashed a custom ROM or rooted the device, make sure that everything is back to stock.

You also want to see what happens when you factory reset the phone so be sure to that if you’ve already installed all Android updates.

If the phone still fails to detect any SIM card, have it replaced.

 


Engage with us

If you are one of the users who encounters a problem with your device, let us know. We offer solutions for Android-related problems for free so if you have an issue with your Android device, simply fill in the short questionnaire in this link and we will try to publish our answers in the next posts. We cannot guarantee a quick response so if your issue is time sensitive, please find another way to resolve your problem.

If you find this post helpful, please help us by spreading the word to your friends. TheDroidGuy has social network presence as well so you may want to interact with our community in our Facebook and Google+ pages.

Galaxy S7 won’t send SMS to some contacts after using it as a hotspot, other issues

Due to an increasing number of incoming #GalaxyS7 and #GalaxyS7edge issues, we may be publishing at least 2 posts for this device every day starting today. So far, this is our second S7 for the day so we hope that we make this as just another helpful reference for those looking for solutions for their S7 problems.

Below are the topics that we cover for you today:

  1. Galaxy S7 mark notifications as read after installing an update
  2. Galaxy S7 not charging via USB cable
  3. AT&T Galaxy S7 edge can’t connect to mobile data when on T-Mobile network
  4. Galaxy S7 won’t turn on after getting several “App has stopped working”
  5. Deleted emails from laptop won’t go away in Galaxy S7
  6. Galaxy S7 keeps showing “sending” even after SMS has been sent
  7. Galaxy S7 wifi freezing and crashing after installing Android Nougat update
  8. Galaxy S7 won’t charge and keeps vibrating when connected to a charger
  9. Galaxy S7 won’t send SMS to some contacts after using it as a hotspot

If you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page, or you can install our free app from Google Play Store.

When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.


Problem #1: Galaxy S7 mark notifications as read after installing an update

After the most recent update my phone will mark notifications as read. This happens when the phone screen is off and the app is on in the background, like if i were to unlock the phone then the specific app would already be open. It does this with Snapchat and Textra the most. I’ve looked through notification settings and reinstalled both apps but the problem still persists. If I hit the home button before pressing the power button then the notifications will stay unread. So only if I was just using the app and then closed my one will the notifications disappear. — Jake

Solution: Hi Jake. We suggest that you do the usual set of software troubleshooting for post-update issues which includes wiping the cache partition, installing all app updates, observing in safe mode, and factory reset. These procedures should fix the issue whether the cause is on app level or something on the operating system. Below are the steps on how to do each of them.

How to wipe the cache partition of a Galaxy S7/S7 edge

  1. Turn off your Samsung Galaxy S7.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe cache partition.’
  6. Once highlighted, you may press the Power key to select it.
  7. Now highlight the option ‘Yes’ using the Volume Down key and press the Power button to select it.
  8. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

How to boot a Galaxy S7/S7 edge to safe mode

  1. Turn your Galaxy S7 off.
  2. Press and hold the Power button.
  3. Once the ‘Samsung Galaxy S7’ logo appears, release the Power key and immediately press and hold the Volume Down button.
  4. Continue holding the button until the phone finishes rebooting.
  5. Once you see the text “Safe mode” at the bottom left corner of the screen, release the Volume Down button.

How to master reset a Galaxy S7/S7 edge

  1. Create a backup of your important files such as photos, videos, etc.  Files stored in your SD card are okay and won’t be touched by factory reset.
  2. Turn off your Samsung Galaxy S7.
  3. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  4. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  5. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  6. Using the Volume Down key, navigate through the options and highlight ‘wipe data / factory reset.’
  7. Once highlighted, you may press the Power key to select it.
  8. Now highlight the option ‘Yes — delete all user data’ using the Volume Down key and press the Power button to select it.
  9. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  10. The phone will now reboot longer than usual.

Problem #2: Galaxy S7 not charging via USB cable

Hey. I wish to share a weird problem regarding my phone (1 year old) Samsung Galaxy S7. Recently, I had left it overnight for charging (happened twice only till now) and now my phone does not seem to charge with the help of original charger (in fact discharges sometimes). I have one spare USB and my phone charges better (not too fast and not too slow) with it when I charge it with laptop. But if I use the same USB with some adapter, then phone charges very slowly. My phone does not seem to charge good with adapters 🙁

Do you happen to have any idea what could be the problem here? Thank you in advance! — Roopal

Solution: Hi Roopal. If your phone no longer charges using the original Samsung charger and cable it came with, you should consider using another original charger to see if it’s a phone issue or not. Using the same USB cable but unofficial charger (from another manufacturer) may not work properly due to incompatibility issue. Only Samsung chargers and USB cables are validated by Samsung engineers when they designed your phone so there may be some things that they may have not considered resulting to poor charging performance. Keep in mind that not all chargers work well with Samsung devices so if you want to determine if this issue is due to a charger or phone problem, stick with official Samsung ones.

If a new original Samsung charger won’t make any difference, that’s the time that you consider doing some phone troubleshooting.

The first thing that you want to do is to recalibrate the battery. This will ensure that the operating system detects battery levels accurately. Here’s how it’s done:

  1. Use the phone by playing games or doing tasks to hasten power discharge, until the phone turns itself off.
  2. Turn the phone on again and let it turn itself off.
  3. Charge the phone without turning it back on.
  4. Wait until the battery says it fully charged to 100%
  5. Unplug the charger and turn the phone on.
  6. If the phone says it’s not 100% anymore, turn it off, plug the charger back in and wait until 100% charge is reached.
  7. Unplug the charger the turn the phone on again.
  8. Use the phone until you drain the battery down to 0.
  9. Repeat the cycle once.

If calibrating the battery won’t help, the other obvious but sometimes forgotten software troubleshooting that must be done is to install system updates and making sure that all apps are compatible. Go under Settings and check if there’s any pending system update you haven’t installed for a while. If the phone’s software is up-to-date, go over your list of apps and make sure that ALL of them are compatible with the current Android version. Some apps can cause problems if they not designed or updated to work with a certain Android version. Most mainstream or popular apps are most likely updated so you have to focus on less known ones. Visit their installation pages in Google Play Store and check the reviews of other users to see if others are experiencing the same issue as yours. If you recently installed an app prior to noticing the problem, try to see if it’s the one that’s causing the problem by removing it from the system. If you install apps from third party sources outside the Play Store, it’s your responsibility to screen them and ensure that they are to be trusted. Better still, try to boot the phone to safe mode and see if there’s a difference. Refer to the steps above on how to do it.

Finally, if nothing changes and the issue stays after doing the steps above, do a factory reset. This is the final solution that you can try on your end. If the issue remains after a factory reset, that’s proof that your issue is hardware in nature. You must send the phone in so it can be repaired or replaced.

As a workaround, you can also temporarily use a wireless charger if you want to fast charge. Simply visit your local Samsung store and get a new one if you don’t have one at the moment.

Problem #3: AT&T Galaxy S7 edge can’t connect to mobile data when on T-Mobile network

Hi. I have a Samsung Galaxy S7 edge. I recently moved from AT&T connection to T-Mobile. After I moved to T-Mobile, internet is not working on my phone. It gets connected only when there is a wi-fi. I got tired calling to AT&T, T-Mobile customer services as nobody could fix it. I was said that my phone is provided with internet data and it may be a problem with the phone. I tried all the possibilities by changing the settings. It’s so annoying when you have a smart phone and don’t have internet. Please help me and suggest a solution for this. Thanks in advance! — Arpana

Solution: Hi Arpana. The first thing that you want to do is to ensure that you have an active T-Mobile mobile data subscription. If you don’t have one, there’s no amount of troubleshooting that you can do to make mobile data connection to work. For this one, you have to contact T-Mobile so you can confirm with them if your mobile data service is working. Alternatively, you can try to insert your SIM card to another compatible phone and see if you can make mobile data connection to work. In a GSM network like T-Mobile, the phone’s APN settings are automatically configured once the SIM card first tries to establish contact with the carrier. If that doesn’t happen there may be an issue with your account so you want to ask help from your carrier.

Secondly, you want to make sure that your phone, which may still be running the full AT&T software configuration is properly set up to allow mobile data connection with T-Mobile. Make sure that you AT&T has cleared the phone correctly from their system. If it’s not been network unlocked properly, that can lead to an issue like the one you’re experiencing. For this reason, you want to work with AT&T.

Once you’re 100% certain that you have an active mobile data subscription with T-Mobile and the phone has been network unlocked by AT&T and not blacklisted, you then want to ensure that the phone has the correct APN settings. T-Mobile technical support should be able to help you with the set up so make sure that you contact them for it.

Problem #4: Galaxy S7 won’t turn on after getting several “App has stopped working”

I received a notice that I had a virus on my phone and didn’t recognize the sender so I did not click OK to start the virus removal. It was at that time that I started seeing messages that several the “App has stopped working.” I then shut the phone down and tried to normally reboot the phone, then reboot in safe mode. Then I tried to remove the cache. Nothing changed. Each time I would reboot the phone it would show the Verizon screen trying to load but never proceeded to the windows or main screen.        — Alicia

Solution: Hi Alicia. If you are absolutely sure that your phone has no physical damage (never dropped, got wet, or exposed to elements such as extreme cold or heat), then it’s possible that it may be infected with a malware. To fix that you can try to manually flash the software via Odin or Download mode. If you haven’t done it before, we recommend that you let a professional do it for you instead as flashing requires certain level of knowledge about Android. Bring the phone to your carrier or Samsung and let their technician assess the issue for youi.

We don’t recommend flashing for Android beginners but if you want to try it, you must look for a guide for your particular phone model. You can use Google to search for a good one online. You also need to do some basic research on how to do it properly so you’ll not cause complications. Flashing is basically a modification of core Android system files so if mess it up, it can brick your phone for good.

Problem #5: Deleted emails from laptop won’t go away in Galaxy S7

Email will not delete from the S7 after I have deleted it from my laptop. It still works on my old S4 but will not work on the new S7. I called Verizon; all the server settings are correct. I have checked “never” to delete email on the S7 and “delete from server” on the laptop. I have uninstalled and reinstalled the app. Samsung has no answer for me, Verizon has not answer for me either. Wondering if there may be a glitch and if so how do I remedy it? — Twrhll

Solution: Hi Twrhll. We don’t know if we understand your issue correctly but if you’re  emails remain in your S7’s email app inbox after you’ve deleted messages in your laptop, there may be a sync issue with the server that you need to address. What that means is that the command done in your laptop is not being communicated by your email server to other devices that host your email accounts like your S7. This may be the result of a server issue or a phone syncing problem. Contact your email service provider and ask them for assistance on how to fix the issue. They should also help you troubleshoot the possibility that the issue may be phone related.

Problem #6: Galaxy S7 keeps showing “sending” even after SMS has been sent

After a recent update in March, periodically when I create and send a text message it indicates “sending” status permanently however recipients actually receive the text and reply.

Also, i am no longer receiving notifications when I get a new text. I have to open messages and then I see a bunch of new texts that I was not aware had come through.

I tried powering off and on the phone and then everyone that I had texted in the week before received all of my texts AGAIN. I have stopped texting because of this. Is this something others are also experiencing since the newest update? — Tam

Solution: Hi Tam. An issue like this is almost always limited to the subscribers of the carrier that’s having a problem. We haven’t received reports from other Samsung users so it may be isolated to your device or to your carrier.

If SMS has now returned to normal after you restarted the device, try to clear the messaging app’s cache and data to ensure that said app is returned to its default state first. Here’s how it’s done:

  1. Open the Settings menu either through your notification shade (drop-down) or through the Settings app in your app drawer.
  2. Navigate down to “Apps”. This may be renamed to something like Applications or Application Manager in OEM skinned versions of Android 6.0.
  3. Once in there, click on an application.
  4. You’ll now see a list of stuff that gives you information about the app, including Storage, Permissions, Memory Use, and more. These are all clickable items. You’ll want to click on Storage.
  5. You should now clearly see the Clear Data and Clear Cache buttons for the application.

Once you’ve done the procedure above, observe the phone for a week to see if there’s any difference. If the issue returns, do a master reset (steps provided above) and observe the phone again for another week. If the issue stays after that, contact your carrier to see if there’s something that they can do about it.

Problem #7: Galaxy S7 wifi freezing and crashing after installing Android Nougat update

Hey. I was reading about a ton of articles on your page and despite all that and having tried some, my S7 edge still is funky. Especially when it comes to wifi connectivity, which seems to have started when i updated to Nougat. It happens every so often now, more so when it connects to a new network (I’ve been travelling of late and i basically have to connect to a new one every day almost).

What happens is: I would connect to a network, put the password in, and then it could stay on ‘connecting’ then it dies (and resets). It could also freezes the settings page and i would have to close it.

A third option also is for it to just drop it and not connect. When it resets, it is not satisfied with just one. Sometimes it does 2 after it tries to connect.

Also, this happens when i switch too quickly between known wifi too. It boggles me how this could be.

I love this phone and all but this has been more frequent of late and it is rather irritating. Hope to hear from you. — Aston

Solution: Hi Aston. We receive wifi problems every now and then but nothing like particular case has been reported so far. This may be a due to a firmware bug, an incompatible app, or poor software coding. If you’re positive that this happens right after installing Android Nougat update, you must do the usual dose of software troubleshooting namely the cache partition wipe, booting to safe mode, and factory reset. All three procedures are suggested for Jake above so be sure to do them.

Once you’ve factory reset the phone, be sure not to reinstall apps right away. Allow your phone to run for a few hours with only the basic preinstalled apps so you can observe how wifi works. If the problem continues even when there are no third party apps involved, that’s an indication that the bug may be firmware-related. This means that the update you received is buggy in itself. Unfortunately, this problem can only be fixed by the developer of the firmware. If you downloaded the update by air (OTA), contact your carrier so they can make necessary steps to fix it. An issue like this does not have an instant solution and it may take some time to release a patch.

Problem #8: Galaxy S7 won’t charge and keeps vibrating when connected to a charger

My Samsung Galaxy S7 when plugged into either the wall socket or android box direct power the phone pulsates constantly but does not charge. So far I have tried soft reset several times. Have factory reset, drained any excess power from phone. Battery is fine, I have tried everything I can think of and everything on your advice list and am now thinking the only thing it can be is the charge port. It maybe faulty as it was all working perfectly until three days ago.

Initially I tried plugging it into my android box which did charge the phone up to 67% but hasn’t worked since and now the phone will not charge regardless of what I plug it into. It merely pulsates again. Other than that it’s got to be the charge port as as of this morning I have done a factory reset and completely  wiped the phone but yet it will not charge? Any advice you can give me would be great thanks. — Damian

Solution: Hi Damian. The charging port is one of the factors that should be considered when dealing with an issue like this. If you’ve exhausted all software troubleshooting, especially factory reset, you can assume that bad hardware must be to blame. Factory reset is the most that you can do on your end. Because it restores all software settings back to their defaults, factory reset can easily fix any software cause that may be causing your problem. If nothing changes after doing it though, that’s proof that there’s no software issue involved.

If you want to get to the bottom of the problem, you must send the phone in so the hardware can be checked.

Problem #9: Galaxy S7 won’t send SMS to some contacts after using it as a hotspot

I have a Galaxy S7. I have only had it a couple months and last night I used my phone as a hotspot for my niece at dinner. My phone was working fine and then when I got home all of a sudden it won’t send texts to friends of mine; they will only send to my sister and my mom . My mom is on the same bill as me but my sister has a pay as you go phone. I’m not sure if the hotspot did something to my phone but it won’t send messages. The hotpot is off, I’ve tried restarting my phone multiple times. I’ve cleared the cache and nothing so far has worked. What else can I do to fix this? — Krysta

Solution: Hi Krysta. We have no way of knowing for sure what may have happened that caused this erratic behavior but to start your troubleshooting, we recommend that you delete the messaging app’s cache and data first.

  1. Open the Settings menu either through your notification shade (drop-down) or through the Settings app in your app drawer.
  2. Navigate down to “Apps”. This may be renamed to something like Applications or Application Manager in OEM skinned versions of Android 6.0.
  3. Once in there, click on an application.
  4. You’ll now see a list of stuff that gives you information about the app, including Storage, Permissions, Memory Use, and more. These are all clickable items. You’ll want to click on Storage.
  5. You should now clearly see the Clear Data and Clear Cache buttons for the application.

If wiping the cache and data of the app won’t work, try isolating the issue further by using another messaging app. There are many free messaging app in Google Play Store that you can use for this exercise. Basically, your aim is to determine if the issue lies on the messaging app or not. If messaging works normally when using a third party app, you should consider doing a factory reset. Refer to the steps above on how to do this procedure.

 


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