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Galaxy S7 opening SMS on its own, touchscreen not working properly, other issues

Hello Android fans! We bring you the second #GalaxyS7 post for this day. In this one, we discuss 8 more S7 and S7 edge problems as reported by some members of our community. We hope that the solutions we provide can be helpful reference for those having the same or similar problems.

Below are the specific topics we cover for you:

  1. Galaxy S7 freezes and won’t turn on
  2. Galaxy S7 opening SMS on its own, touchscreen not working properly
  3. Galaxy S7 edge SMS pop up notification won’t reply to group message
  4. Galaxy S7 LED and screen goes blank when charging | Galaxy S7 Task Manager only shows few apps
  5. Galaxy S7 no longer boots up after an update
  6. Galaxy S7 no sound during calls
  7. Galaxy S7 keeps saying there’s moisture in the charging port
  8. Galaxy S7 freezing and lagging after installing an update | Facebook not working on Galaxy S7 after an update

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 freezes and won’t turn on

Hi DroidGuy. I bought my S7 G930FD in May 2016 in Abu Dhabi. It worked well for a few months. I moved to Sydney and the phone has not worked properly since the update in November. There was another update in Feb/March that seemed to fix the restarting issue for a while but then with any use it would freeze up or go to black screen of death. Then I have to wait for the battery to drain and then charge up to try anything else.

Just today I tried to wipe the cache partition for the first time and it froze before I could choose yes. I have been scouring these pages for a solution as the only way to get Samsung to do anything is to send the phone back to Abu Dhabi to be checked. In Sydney they kind of laughed at me when I explained the problem. This is the last Samsung phone I will ever buy, their customer service is appalling not to mention that this is an expensive paperweight/piece of garbage for me at the moment. It collects dust on a shelf while I use my old s4. I need any help you can give.  —  Nat

Solution: Hi Nat. It’s hard to identify the cause of the problem when there’s not enough details provided to us. Frankly, it also won’t matter that much anyway as your main task right now is to check whether or not you’ll still be able to turn the phone back on. Unless you can power it on, there’s very little to nothing that you can do on your end in terms of troubleshooting.

To see you can still turn the phone back on, make sure that you try to start it to these three alternate modes:

Boot in Recovery mode:

  1. Charge the phone for at least 30 minutes.
  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. You can either wipe the cache partition or do a factory reset when in this mode.

Boot in Download Mode:

  1. Charge the phone for at least 30 minutes.
  2. Press and then hold the Home and Volume DOWN 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 DOWN keys.
  4. Wait until the Download screen appears.
  5. If you can boot the phone in download mode but not in other modes, that means that your only way out may be to flash a stock or custom firmware.
  6. Use Google to look for a guide on how to do it.

Boot in safe mode:

  1. Charge the phone for at least 30 minutes.
  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.
  6. The only difference of safe mode from normal mode is that the former prevents third party apps from running. If you can boot the phone in safe mode but not in normal mode, uninstall all apps until the issue (that prevents you from booting normally) is eliminated.

If your phone remains unresponsive or won’t boot to any of these modes at all, that means that bad hardware is to blame. You must contact Samsung again so the phone can be repaired or replaced.

Problem #2: Galaxy S7 opening SMS on its own, touchscreen not working properly

My phone is typing gibberish and opening text messages all on its own. It took me a few times to try to shut it down. It was as if it wasn’t detecting me touching the screen, or as if someone else had taken control of it and locked me out. I have McAfee antivirus installed and haven’t had any other issues with it. After shutting down and then restarting it seems ok but I’m afraid it might happen again. Is there a way to troubleshoot and figure out why my phone temporarily went haywire? Yesterday afternoon it didn’t detect my finger swipe so I rebooted then too. Now this morning the haywire typing so I’m concerned I might need to fix something but don’t know where to begin or what to focus on. And this has not been dropped or stepped on or wet- undamaged condition in protective case and protective screen cover. — Mal1402

Solution: Hi Mal1402. Your phone’s touchscreen may be damaged causing the malfunction. To see if does not register your touches properly, you should do the following:

  1. Open the phone’s dialer app or Phone app.
  2. Dial “*#0*#” (without the quotes).
  3. Tap the Touch box.
  4. Run a test of your touchscreen by tapping and running lines all over the screen. If there are breaks in the lines or if there’s a portion of the screen that doesn’t register your touches, that’s a clear indicator of a bad touchscreen.

If you think the touchscreen is broken, send the phone in for repair or replacement.

Problem #3: Galaxy S7 edge SMS pop up notification won’t reply to group message

After recently updating my Galaxy S7 edge I’ve noticed a problem with the text message pop up notifications. I love this feature because it allows me to easily respond, but now, when the pop up notification appears due to a group message and I respond, it only replies to the person that sent the message, not the group. I have group messages enabled and when I use the app rather than the pop up notification group messages works just fine.        — Adam

Solution: Hi Adam. There may be an app or software bug that causes this so you must do two things.

The first one involves wiping the cache and data of the messaging app. Doing so would force the phone to revert all settings of the messaging app to their defaults. Keep in mind though that such exercise will erase all your messages so make sure to back them up before you proceed. You can use Samsung Smart Switch for that. So, here are the steps that you want to do to delete the cache and data of the messaging app:

  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 this won’t change the behavior of the pop up notification, do a factory reset. Here’s how:

  1. Create a backup of your important files such as photos, videos, etc. using Smart Switch.
  2. From the Home screen, tap the Apps icon.
  3. Find and tap Settings and then touch Backup and reset.
  4. Tap Factory data reset and touch Reset device.
  5. If you have screen lock feature turned on, enter your password or PIN.
  6. Touch Continue.
  7. Tap Delete all to confirm your action.

Problem #4: Galaxy S7 LED and screen goes blank when charging | Galaxy S7 Task Manager only shows few apps

The phone works perfectly except when it is charging. When I place it on the wireless charger, or plug it in, the red LED goes on for a moment, the water ripple shows and then the screen and LED go blank. If I touch the screen I get the charging indicator in the battery status and the red led illuminates. Place it back on the charger, blank.

I also have no “always on display, or night display, while charging!

A second issue is my frequently used apps in Task Manager seems to limit the number of apps it shows. It almost never shows more than 10, often only around 5. All of this happened after the most recent update last week or so. Thank you. — Rsoltz

Solution: Hi Rsoltz. If you’re 100% positive all these issues started to occur after an update, you must do two things — wipe the cache partition and master reset.

Below are the steps for each one.

How to wipe the cache partition of Galaxy S7

  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 master reset your Galaxy S7

  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 no longer boots up after an update

I have recently received a notification for an update. I have a Galaxy S7 phone. So, I downloaded the update as instructed and I’m not quite sure if the update was successful. Yet after installation, that was the beginning of my problems. The phone freezes at while but at times come on after 15 to 20 minutes. Today is a different thing. for the past 5 hours it been off and refuse to come on with all the techniques that you mentions earlier. Please what can i do? Thanks.– Inemesit

Solution: Hi Inemesit. We haven’t heard of similar problem to yours so this must be an isolated case. The installed update may not necessarily be the cause and there may be another underlying reason why the phone now fails to boot up. The range of possible reasons can vary and includes the following:

  • bad power button
  • malfunctioning battery
  • damaged screen or LCD
  • unknown hardware issue

As you can see, all the items above are all hardware. To see if that’s the case, you must first try to restart the phone to alternate boot modes (Recovery Mode, Safe Mode, and Download Mode) as mentioned above. If the phone remains off and won’t respond to the three hardware button combinations, you can assume that bad hardware is to blame. That means any of the 4 items we outline above can be at play.

Sometimes, a bad charging port can also lead to your phone not turning on simply because the battery won’t be charged anymore. Like all the four items above, there’s no direct way to test if the charging port is working or not (except by using another known working charger). If your S7 stays off, have it repaired or replaced.

Problem #6: Galaxy S7 no sound during calls

I USE A SAMSUNG S7 edge. I got it in January. However, I’ve not been able to make or receive calls with it as I can’t hear anything the other person says and vice versa. I can however hear when I make internet calls like WhatsApp calls. I’ve taken to repairers and it’s been formatted and ear and mouth piece are fine but problem still persists. I’ve switched off and on several times but nothing. What can I do? — Araloyinjohnson

Solution: Hi Araloyinjohnson. If you got your S7 brand new, we suggest that you have it replaced as early as now as this is clearly not a hardware issue. It can be an operating system glitch, which may or may not be fixed by your carrier. If the phone is part of your carrier’s subscription plan, report the issue to them so they can see if there’s any problem on their system when you’re using a particular app during calls. It can also be a network problem so your network is in the best position to help you with this one.

Problem #7: Galaxy S7 keeps saying there’s moisture in the charging port

When I tried to fast charge my Samsung Galaxy S7, an error message popped up saying that there was moisture detected in my port. I put my phone in rice for 24hrs. and tried to clean it with Aerosol and it didn’t work. I checked the moisture tab in the SIM card port and sure enough, it was completely unscathed. So I am sure that the moisture detection error is a malfunction but clearing my USB data did not work and when I tried to soft reboot my phone by pressing the Power and Volume down buttons simultaneously for 12 seconds nothing happened. No boot menu or anything, my phone just restarts. I don’t know what else to do. — Alysiaeradu

Solution: Hi Alysiaeradu. Pressing and holding Power and Volume Down buttons for 12 seconds will do exactly what you describe here — the phone just restarts. You’ll not get any menu at all after that time as it’s the virtual equivalent of pulling out the battery for older Samsung Galaxy S phones. This procedure is best used when the phone becomes unresponsive and won’t recognize any touchscreen input. We don’t know how this becomes a problem for you but your experience is definitely normal.

The moisture tab in the SIM card slot will only detect moisture in that area, not the one in the charging port. If water is only found at the bottom part of the phone, the Liquid damage indicator (LDI) will remain normal  and won’t get tripped. Samsung designed the charging port to be water-resistant to prevent moisture from leaking inside. However, if the system detects moisture in the charging port area, the phone will refuse charging or data transfer. It will also warn the user that there’s moisture there so that proper cleaning and drying can be done. To dry the charging port completely, try using a hair dryer. Be careful not to put too much heat in the area though to avoid causing damage.

Problem #8: Galaxy S7 freezing and lagging after installing an update | Facebook not working on Galaxy S7 after an update

After an update in February, I’ve been experiencing the following issues.

  • Facebook freezing
  • Back button unresponsive.
  • Enterprises Facebook shuts down.
  • Facebook is not keeping up with current feed.

I’ve tried all the setting recommendations and it made no difference. I’ve also went into the app to clear cache and force stop then reopen. No improvement. Google assistant not working very well. After update Hello Google didn’t work at all. Went into settings as suggested and redid the voice recognition. It works about one in 5-6 times now. General lag since the update. All apps load slower now. Keyboard not as responsive either. Lags behind or misses letters. No new apps have been downloaded since the update. — Georgie

Solution: Hi Georgie. The troubleshooting that you should do in this case are the following (in this order):

  1. cache partition wipe
  2. Installation of app and system updates
  3. Factory reset
  4. installation of app and system updates
  5. uninstallation of incompatible apps.

The steps for cache partition wipe and factory reset are provided above.

If the problem remains after doing all of them, do one more round of factory reset and observe the phone for at least 24 hours without installing any app or update. If the lag or slow performance issue persists, send the phone in for repair or replacement.

Alternatively, you can manually flash the previous Android iteration (probably Android Marshmallow) to bring back the normal function of the device. We do know that Galaxy S7’s hardware is pretty much compatible with Android Nougat so if you continue to have performance problems with it (Android 7.0), hardware malfunction must be causing it.

 


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