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Galaxy S7 is unresponsive and won’t reboot, Gallery app stopped working, other issues

Welcome to another post as we bring you more #GalaxyS7 issues. Many users are now increasingly reporting S7-related issues so we are also trying to publish as many posts about this devices as possible. If you can’t find anything similar to the issue you’re experiencing, make sure that you visit our main Galaxy S7 troubleshooting page.

Below are the specific issues we cover for you today:

  1. Galaxy S7 turns off randomly
  2. Galaxy S7 edge screen is black and has blue LED light on
  3. Galaxy S7 is unresponsive and won’t reboot
  4. Galaxy S7 Gallery app stopped working
  5. Verizon Messages+ issue on Galaxy S7 | Galaxy S7 keeps sending chat messages instead of regular SMS when using Messages+
  6. Galaxy S7 screen keeps flickering white and green

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 turns off randomly

I have had a Samsung Galaxy S7 since the end of November 2016. A few days after using it, I noticed that it would turn off. The battery didn’t need to be charged. I would not be able to turn on the phone without a force reboot (holding down the power button and volume down at the same time). This fixes the problem each time it occurs. But it happens rather frequently. When this occurs, if there is a notification, the light continues to flash. I just cannot seem to wake it from sleep. I just wiped the cache, as per your recommendation. I don’t know if that has helped with the problem. Everything is up to date with the phone software. — Hope

Solution: Hi Hope. First of all, we advise you to get a replacement phone, or have the hardware checked if this phone was not brand new when you got it. In most cases, random reboot issue or frequent lock ups are caused by bad hardware so we want to save you from trouble by skipping the troubleshooting part.

Secondly, Android troubleshooting is mostly about software troubleshooting, hence all you can do on your end are basic solutions. If you haven’t tried the usual dose of troubleshooting yet, below are the things that you should try.

Wipe the cache. Done as per problem description.

Observe the phone in safe mode. Although we are yet to identify a third party app causing a Galaxy S7 to reboot randomly, this troubleshooting is worth trying nevertheless. Here’s how it’s done:

  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.

Remember, you need to observe the phone for at least 24 hours after booting to this mode. This will give you enough time to see if there’s any difference. If the issue won’t occur while your S7 is in safe mode, you should deal with your apps as one of them is causing the trouble.

Perform a factory reset. Finally, you should not hesitate to do a factory reset if nothing changes even when you boot your phone to safe mode. Factory reset wipes everything from the phone’s primary storage so make sure to create a back up of your files before proceeding. Here are the steps on how to factory reset your phone:

  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.

Send the phone to Samsung or service center. If factory reset won’t fix the problem, that’s an indication that this is not a problem due to a software bug. There may be an in issue with its battery or motherboard so a thorough hardware diagnostics must be performed on it.

Problem #2: Galaxy S7 edge screen is black and has blue LED light on

I’m stuck at the screen that shows SAMSUNG Galaxy S7 Edge with the blue LED on. The screen just sits there with the blue LED light on. BTW, I dropped the phone some time October 2016 and cracked the back glass. Never did I drop the phone again. The phone was never exposed to cold and heat nor was soaked in water. The issue with the phone restarting or hanging was last January 2017. Normally, pressing and holding keys (troubleshooting steps found in this website) does the trick but not this time. Please help. Thank you. Also, I’m not sure which android version I have. — Paolo

Solution: Hi Paolo. Before you can attempt to solve this kind of issue, you must first check if you can restart the phone to alternate boot modes. If nothing changes when you do any of the three boot modes (recovery, safe mode, and download mode), you should send the phone to Samsung or a service center. For reference, here are the steps on how to boot your S7 to different boot 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 is unresponsive and won’t reboot

So I’ve had my S7 since the end of July, never put a SD Card in. So everything has been saving to the phone’s internal memory. Well, a few weeks ago while charging (phone wasn’t dead, I would say somewhere between 40 and 60%, the phone went unresponsive. No buttons work, no reset procedures work. Blue LED blinks, but that is all. I’ve connected it to a computer, no response. I’ve tried the locate my Samsung feature, nothing. Calling it, it goes straight to voicemail. Is there any hope in getting at least the data off the phone? I have equipment protection, the problem is all that they do is replace the phone, so I’d lose all that data. I’m not sure what version of Android is currently on the phone. — Richard

Solution: Hi Richard. The answer to your question depends whether or not you can reboot the phone (most probably not). The phone is most probably stuck right now. If you can’t soft reset it by pressing down the power button and volume down at the same time for 12 seconds, you must wait until the battery runs out. Afterwards, you can try to charge it again before attempting to boot it to alternate modes. If your phone remains unresponsive, have it replaced.

Problem #4: Galaxy S7 Gallery app stopped working

Hi. I’m using a Samsung Galaxy S7 which I just bought yesterday and after downloading a few pictures from the Internet, my Gallery stopped working. I’ve tried putting it on safe mode, restarting the phone and all but those methods don’t work. What’s weird is that I tried to clear my cache and clear the data but it doesn’t clear at all. As in the pictures are still in the gallery and I can’t clear them out. I still can view the pictures through instagram or any other app but just not directly from the gallery. Please advice, thank you so much. — Kiera

Solution: Hi Kiera. If you can’t clear the data of the Gallery app, we suggest that you create a back up of your files before you perform a factory reset. Try using Samsung Smart Switch so you can move your files to a computer easily. Once you’ve created a back up, do a factory reset. Here’s how:

  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: Verizon Messages+ issue on Galaxy S7 | Galaxy S7 keeps sending chat messages instead of regular SMS when using Messages+

I have one contact under my Verizon Messages+ that is sending the contact a “chat” (the contact is not getting the texts/messages) instead of a MMS (regular) text message. How do I change the “chat” back to regular txt message (it shows up as a blue chat icon by the emoji icon to the right of the text bar)? I have looked everywhere and have tried resetting several different things. Even tried deleting this contact and re-adding. Neither of us have added any new chats on our phone. I am receiving his texts messages without any problem. — Beth

Solution: Hi Beth. The first thing that you want to do is to clear the app’s cache and data. 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 6.0.
  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 troubleshooting step won’t work, try to use another messaging app like the native Samsung Messages to see if the issue remains. If it does, there may be a problem with your network. If it doesn’t, make sure that you let your carrier know about it. We don’t work for Verizon and we haven’t even used this particular app so we have no authority over the matter. We suggest that you talk to Verizon technical support for direct assistance.

Problem #6: Galaxy S7 screen keeps flickering white and green

Hi. I was watching a TV show on my phone and out of sudden my screen started flickering white and green. Every time i unlock my screen it goes black but if its locked it’s flickering. I factory restarted my phone and it still the same and also i have few cracks on the phone. what would be the issue because i went to a phone shop it said its the screen? completed gone but i can still touch the screen and use it normally but it’s just flickering white and green at the bottom of the screen. — Ali

Solution: Hi Ali. Did you drop the phone before? If you did, then the most probable cause of the problem may be a bad screen. The symptom of flickering screen is one of the common indicators of a damaged screen assembly. That factory reset did not change anything is another sign of a damaged screen. Have the phone’s screen repaired or the unit replaced to solve the problem.

 


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  1. My S7 wont turn on, reboot, or show any sign of life? It died (because of battery low) then when i charged it. It gave me the downloading screen and it dies and shuts off after that.

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