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Galaxy S7 edge slow in sending MMS after an update, other issues

As the newly-released #GalaxyS8 continues to dominate the technology world, we are also receiving ever-increasing number of #GalaxyS7 issues. May this post will become another good reference for those looking for solutions to their S7 problems.

Below are the specific topics we’re covering for you:

  1. Galaxy S7 edge screen size became bigger
  2. Galaxy S7 screen is black and won’t turn on
  3. Galaxy S7 can’t delete photos and videos from SD card
  4. Galaxy S7 screen showing pixelated part
  5. Galaxy S7 edge slow in sending MMS after an update
  6. Galaxy S7 not receiving copies of emails
  7. Galaxy S7 won’t allow access to camera, memory unsupported error, won’t take PIN
  8. Galaxy S7 getting error when trying to install TWRP

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 edge screen size became bigger

I was taking a picture with my S7 edge. I clicked to picture to review and my phone froze. I reset and the screen is zoomed in about 25% with large text display. The lock screen pattern is full screen. ALL accessibility options are off (zoom, etc.) Font size is small and icons are small. It’s like the default screen setting is zoomed in 25-30%. I tried wiping the system cache, safe mode, nothing works. I really don’t want to factory reset, what else can I try? — Jim

Solution: Hi Jim. We don’t have a complete picture on what happened to your device prior to noticing the problem so factory reset is the only resort we can suggest. As far as icon screen size and font size are concerned, there are only two options that we can modify under Settings app — font size and icon size. If changing them did not work, perform a factory reset.

Problem #2: Galaxy S7 screen is black and won’t turn on

Hi! I have a basically brand new Galaxy S7 that won’t work. The screen has no cracks and definitely no water damage. It’s a plain black screen EXCEPT for the home key and back button which will light up like it’s responding fine. Also, I have the blue flashing light and when charging red light. it even still makes the vibration when touching the home key etc. I tried the hard restart you suggested, but was curious If this could possibly be a loose or disconnected wire on the inside of the phone? I didn’t get warranty when purchasing, bought it at Walmart and forgot to call into my provider after the purchase unfortunately and don’t want to spend 300+ to fix it if I don’t have to. — Jpoulin5377

Solution: Hi Jpoulin5377. This is obviously not a boot problem as your phone clearly powers on so there’s only one problem here — malfunctioning screen assembly. If you can’t fix the problem by booting the phone to alternate modes, then sending the device in is the only option for you. We can’t possibly know what is wrong with your phone unless it’s been physically check and relevant diagnostics are done. Hard it may be but if you want to use the phone again, you must invest in repair.

For reference, here are the steps on how to boot an S7 to 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.

Problem #3: Galaxy S7 can’t delete photos and videos from SD card

Hello. I’m unable to delete pictures and videos from the SD card on my Galaxy S7 edge. More specifically, I delete the photos and videos and for about 30 to 60 seconds they appear to be removed from SD card. In no time at all though, they slowly start reappearing and in a few minutes all the photos I deleted are on my phone (on the SD card) again. I am able to delete photos and videos from the internal storage on the phone, with no issues at all. I’m hoping you can point me in the right direction. — Jenbuchsen

Solution: Hi Jenbuchsen. We haven’t heard of any bug that results to a situation like this so it may be an isolated case. To try to fix the problem, the first thing that you want to do is to delete the Gallery app’s cache and data. This procedure will delete any photos and videos stored in this app so make sure that you create a backup of your important files before doing it.

  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 deleted the cache and data of the Gallery, try to access the SD card again. If the problem remains it may be an issue with the SD card itself so you must reformat it to see how it works afterwards. Alternatively, you can try to insert a different SD card and see if you can replicate the issue on it. If the same problem occurs when using a different card, consider wiping the phone via factory reset.

  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 #4: Galaxy S7 screen showing pixelated part

My device screen all of a sudden has pixels on the screen that are blue, green and pink in a cluster like a smudge but only there was no dropping of my phone or anything. I was wondering what would be a cause of this? I woke for work and noticed it in the morning but only once I was on the lock screen with black background. i noticed it stand out like a sore thumb. on back ground it was ok. anyone ever come of this? there is no cracking or anything. I even used a magnifying glass to see and nothing just pixels stuck never changing colours but staying the colours they are. — Kev

Solution: Hi Kev. Some themes or wallpapers may sometimes give the appearance of a concentrated bright pixels in a portion of the screen. If you want to check if that’s the case, we suggest that you boot the phone to recovery or Odin mode. If the pixelated part resurface in these modes, that’s an indication that you have a bad screen and thus the phone has to be repaired or replaced. Below are the steps on how to boot the phone to recovery and/or Odin mode:

How to restart an S7 to 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.

How to restart an S7 to 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.

Remember, if the screen looks normal after booting the phone to any of these modes , simply change your phone’s wallpaper or theme.

Problem #5: Galaxy S7 edge slow in sending MMS after an update

I have a Galaxy S7 edge. When I first got it I loved it, and have loved it ever since. However, I don’t know if it’s because of the most recent system update or something but text messages can take forever to send sometimes, the keyboard lags horribly and sometimes freezes up for a few seconds, then the messaging app closes all together and says not responding. To top it off my best friend has the same phone, and the same problems with it as I do. We’ve literally started emailing each other pictures because the picture messaging is so horrible that it’s not even worth the frustration of dealing with it anymore. Pictures are constantly failing for no reason. They take forever to load when receiving a picture that finally made it through, and when they do go through they take forever to send. I never have had this problem before, and it’s upsetting and inconvenient enough to make me want to switch to an iPhone. Please get back to me as soon as possible. Thank you. — Kaitlyn

Solution: Hi Kaitlyn. If you and your friend’s S7 phones are on the same network and downloaded the system update around the same time, it’s possible that the trouble is being caused by a glitchy firmware from your carrier. This means that there’s nothing much that you can do except to let your carrier know about the problem and hope that they can release a patch to fix it soon.

On the other hand, if your friend is on a different network but the problem started about the same time as yours, it may just be a coincidence. You need to troubleshoot your phone to find out the real cause.

Wipe the cache partition

For starters, you want to begin with wiping the cache partition. This will ensure that your phone’s system cache is in good order as installation of updates and app can sometimes mess it up. A corrupted system cache can, in turn, result to problems. To wipe the cache partition, kindly do the following steps:

  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.

Install app and system updates

After wiping the cache partition, it will take some time for the system to build a new system cache. You don’t have to worry though as it won’t affect the general performance of the device as everything happens under the hood.

To help minimize bugs in the system from here on onwards, it’s your responsibility to ensure that ALL apps are updated and compatible with the operating system. Go over the list of your apps and see if there’s something that you haven’t used in the last two weeks. Such apps may not be that important to you so consider removing them from the system. If you are fond of installing apps without checking whether they’re from a reputable developer, check everything again and make sure that you only install those that are from a good source.

Finally, you want to make sure that only compatible apps are running in the system. We are assuming of course that you only download from the Play Store so head over there and check each installation page of your apps to see if they are compatible with the operating system version. Developers often indicate details whether or not their product is compatible or incompatible with a particular Android version. If you are not sure, contact the developer and get direct information.

Delete app cache and data

Another good troubleshooting step that you can do in this case is to delete the cache and data of apps you’ve having trouble with such as the messaging app and keyboard. Below are the steps on how to do this procedure:

  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.

Wipe the phone by doing a factory reset

Any of the above procedures should help you fix the problem but if nothing changes, do a factory reset and see if there’s a difference. Factory reset will wipe your phone’s internal storage device so make sure that you create a backup before doing it.

  1. From the Home screen, tap the Apps icon.
  2. Find and tap Settings and then touch Backup and reset.
  3. Tap Factory data reset and touch Reset device.
  4. If you have screen lock feature turned on, enter your password or PIN.
  5. Touch Continue.
  6. Tap Delete all to confirm your action.

Problem #6: Galaxy S7 not receiving copies of emails

I managed to get my email accounts set up on my phone and emails have been coming through (a little slower than my other device though so I have opened them on my other device instead of my phone). 12+ hours have passed and the emails have still not come up in my email app on my Samsung Galaxy s7. Is this because I opened them in a different device? Surely they would still come up on my phone but possibly show as already read rather than new email. That’s what they used to do on my S6. Hope this all makes sense Thanks. — Gemma

Solution: Hi Gemma. The result that you’re hoping for depends on how you set your email account up on both devices. During an email account set up, you will be asked to choose whether to use POP3 or IMAP when downloading your messages. The former allows you to download a message to only one device after leaving the server and nowhere else. In some modified POP3 configuration, a user may be able to leave a copy of the message in the email service provider’s server but this option must be set manually and must be supported by the provider as well. By default though, choosing POP means storing only a message to one single device so if you configure your email account to, say, two smartphones, only one of them will be able to store the message. IMAP, on the other hand, allows multiple devices to keep copies of the message and every device can download the same message and keep it there. If you can’t remember which option you choose when setting up your email, simply delete the account from your devices and reconfigure them in IMAP.

Problem #7: Galaxy S7 won’t allow access to camera, memory unsupported error, won’t take PIN

My phone froze during a flight a few times and then wouldn’t turn on even though battery was at 60%. When it did come on it won’t let me access the camera and says memory card unsupported and wants me to format it. Is this anything to do with being on a plane or flight mode or the recent update?

My daughter dropped it down the side of the plane chair about 2 hours before but it is in a really protective case and there’s not a mark on it. I can still see the previous photos in the gallery. I’ve had the phone 18 months and camera has always worked perfectly until now when I am on holiday 🙁

I have found that I have needed to enter my code about 4 times before it turns on since the last update 2-3 weeks ago. Here’s hoping you can work miracles! —  Eileen

Solution: Hi Eileen. The solution to the problem obviously depends on what really is happening on the phone right now. If this issue never occurred before, it’s possible that the accidental drop may have led to a hardware problem causing the phone to malfunction. The issues you mention here (camera, SD card, PIN) are unrelated so this may not be a software-related problem. To find out if that’s the case, we recommend that you try the software procedures above such as wiping the cache partition and factory reset. Factory reset will return all software settings back to their defaults and eliminates software bugs. If nothing changes and the issues you mention here remain after you do the reset, you can bet hardware is to blame. In this case, your options are to either have the phone repaired or replaced.

Problem #8: Galaxy S7 getting error when trying to install TWRP

Ok with Marshmallow phone was having serious trouble rebooting so I made backup and rooted with TWRP running Linage ROM. Then decided to go back to stock using Odin. I wiped phone clean, no issue at all! Used Odin many times to install Marshmallow and Nougat and even tried Lineage again but it just keeps going to Samsung logo and keeps trying to reboot but won’t. Odin shows pass Everytime and only errors with TWRP. I have reformatted with TWRP as well with no success. Always have errors when trying to install with TWRP now. Am I missing something with Odin or TWRP? Is it a hardware issue? SM-G930W8. — Darcy

Solution: Hi Darcy. It’s hard to determine the cause of a problem like this so it’s for you to find out. There are so many things that can go wrong while flashing, especially if you are fond of tweaking options in Odin. We say you try to factory reset the phone via recovery mode and start from there. Once you’ve done that, do a by-the-book flashing of stock firmware and bootloader and see how it goes. If the phone continues to get stuck in a boot loop, or won’t load the operating system normally, consider getting a new device.

If you are getting a TWRP-specific error, contact the developer of the software to see if there’s something that they can do to help.

 


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  1. After the most recent software update, appearance of the settings icons changed. It’s now harder to determine if they are active or not, especially at at glance. Is there a way to change the settings icons back to their pre-update appearance? Thanks in advance.

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