Fix Samsung Galaxy S7 Edge that keeps rebooting & other power-related issues [Troubleshooting Guide]

We have been receiving complaints from our readers who own #Samsung Galaxy S7 Edge (#S7Edge) units that keep rebooting for some reason. While we already addressed many of these kinds of issues before, we are obliged to look into it from time to time considering we have readers that continuously send us report regarding this issue.


Random reboots are often a sign of a troubled firmware or a misconfiguration in the settings. It is necessary that you take a little of your time to troubleshoot the problem if you don’t have time to wait at a shop while the device is being checked by the technician. While it’s a symptom of a potentially serious problem, random reboots can be fixed by doing some troubleshooting steps and I will walk you through in trying to solve it.

For those who have other concerns, make sure that you visit our troubleshooting page. We have already addressed hundreds of problems with this device so it’s possible that there are already existing solutions to your problems and all you gotta do is find them. You may also contact us by completing our Android issues questionnaire but please give us sufficient information about the problem so we can give you more accurate solutions. Don’t worry, everything is free.

Galaxy S7 Edge keeps on rebooting

Problem: First, I’d like to say that my Galaxy S7 Edge is absolutely a great device. But just this week, it started to reboot randomly even if I’m not touching it or even the screen is locked. In fact, I asked some of my friends who also have had the same phone but unfortunately even them didn’t have any idea what’s happening on my device. And now the problem is getting worse, the phone restarts more often compared the other day. I tried the device to power it off and after a few minutes power on it again but still no avail. Any idea how to fix this issue? – Aaron

Solution: Well, this issue you have is common not just in Galaxy S7 Edge device but to all Samsung Galaxy models. In fact, there are several reasons why the device reboots itself without any prompts or warning. As I dug deeper on the issue, I found that one of the key reasons is due to a defective battery in which, it cannot anymore provide the required performance and power and that’s the reason the device will reboot itself. You may follow the procedures below to see if one of them can shed light into the issue or even fix the problem…

Step 1: Boot the device in Safe Mode

Through Safe Mode you can determine if some of your newly installed third-party apps are causing the issue. However, after booting the device on that mode and it won’t crash or reboot then, there are third-party apps that triggers the issue. So, the best thing you need to do is to find and uninstall those apps you suspected that triggers the problem and observe if the issue will persist.  

Here are the steps how to reboot the device in Safe Mode:

  1. Press and hold the Power key.
  2. If Samsung Galaxy logo appears, release the Power key and simply hold the Volume Down key.
  3. Continue holding the Volume Down key until the device finishes rebooting.
  4. If you can see “Safe Mode” in the bottom left corner of the screen then, you may release the Volume Down key.

Step 2: Factory Reset the device

The factory reset is necessary when the problem still occurs in safe mode. It will bring the phone back to its default settings and clean up the installation. More often than not, reboot problems can easily be fixed by the reset but the thing is that you will have to go through all the hassles of backing up your data, which is necessary if you don’t want to lose important files.

So, make sure you backed up everything in your phone and just reset the device through the Settings menu.

  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.

After the reset, set your phone up again.

Galaxy S7 Edge overheated, not booting up

Problem: My S7 Edge overheated while charging and not booting after that. I have tried booting the phone by different methods mention in your post. Can you help me on how to boot my S7 Edge?

Answer: You cannot take the word “overheated” very lightly because if what you said is true, then your phone is messed up pretty badly. I think the problem is not just about the phone not booting up, I think it really won’t turn on at all. I think it’s fried already! So, let the technician check it for you because as what you’ve said, you’ve already tried the different methods we mentioned in our posts.

Galaxy S7 Edge has a black screen, won’t boot up

Problem: My phone is not turning on it was on earlier with pink and green lines and now it is black and whenever I press the power button or the home button it showed that the back button and page button are lighting up I tried all the tricks holding the power button and every other button and after doing that whenever I pressed the home button and the power it flashes green.

Answer: Of course, there are things you haven’t told us, right? Like what happened to the phone before the problem occurred because it seems to me that the device actually suffered physical or liquid damage. This kind of issue doesn’t occur without any cause and the thing is we only know the symptoms and not the cause.

If the device suffered physical and/or liquid damage, then don’t waste any more time instead bring the phone to the shop and have a technician check it for you. Should you be interested in troubleshooting your phone, the following are methods you may need to try to find out if the device is still capable of powering itself up:

  • Boot in safe mode.
  • Boot in recovery mode.
  • Wipe cache partition.
  • Do the master reset.

Everything depends how serious the problem is. It’s your phone, it’s you who know what happened to it.

Galaxy S7 Edge charger and adaptor gets extremely hot

Problem: Hey I’m Kaelyn I have a Galaxy S7 Edge and my USB and adaptor gets extremely hot and I have to switch out chargers every so often but then go back to using the other. I have to switch between three different chargers.

Answer: Stick to one charger first. Plug it in and connect your phone. Leave the phone charging and see if it still heats up even with the phone’s screen is turned off while charging. If so, try turning off the device and see if the same thing happens. Do the same to other chargers. The purpose of this procedure is to find out if it’s the phone that’s causing the power adapter to heat up because it is normal for the charger produce the same amount of current regardless whether the phone is in use while charging or not.

If the phone is being used while charging, the generation of heat will be greater than when the phone is turned off. However, if it’s the phone that’s heating up while charging, there might be a more serious hardware issue. For this, you need a technician. The same thing goes if all your chargers heat up even if the phone is turned off while charging. It’s best to stick with the original charger just to be safe.

If the problem persists, I suggest you immediately bring the phone to a shop to have it checked because it’s risky having to try different chargers and we don’t know exactly if those chargers meet the standards. Remember that the S7 Edge supports quick charging and there are now third-party chargers that are also capable of producing high current and voltage to meet the demands of phone with such feature. The thing is, the higher the voltage and current, the more risky it is for the user. Batteries may explode if not charged properly and I saw it first hand. We don’t want to put our readers in harm’s way so if everything doesn’t go well with your phone, seek assistance immediately.

Galaxy S7 Edge fast charging not working anymore

Problem: My fast charging is not working anymore I tried other cables and fast chargers. Another problem is that when i plug the usb in the laptop it doesn’t let me copy any data from it . It shows only that charging. Fast charging is activated in the system.

Answer: There are pre-requisites that need to be met before your Galaxy S7 Edge can fast charge so check on that. But you know what, the easiest way to make the device fast charge is by turning it off. If the phone doesn’t fast charge, then there’s a problem and whatever it might be, it’s recommended you troubleshoot your phone with a clean firmware installation. So, try to wipe the cache partition first and then try to charge your phone again. If the phone doesn’t fast charge after that, you must try to reset the device and then try again. If still no, it’s time you tried using a different charger and cable and if the problem persists, have the phone checked.

Here’s how you wipe the cache partition…

  1. Turn off the phone.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 Edge 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 wiping the cache partition. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

And here’s how you do an effective reset…

  1. Turn off your Samsung Galaxy S7 Edge.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key. NOTE: It doesn’t matter how long you press and hold the Home and Volume Up keys, it won’t affect the phone but by the time you press and hold the Power key, that’s when the phone starts to respond.
  3. When the Samsung Galaxy S7 Edge 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. NOTE: The “Installing system update” message may show on the screen for several seconds before displaying the Android system recovery menu. This is just the first phase of the entire process.
  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.

Galaxy S7 Edge screen black, phone unresponsive

Problem: Black screen, no response to power or home buttons.  No reset response.  Phone continues to receive calls and text (according to audio).  Occasional flash of white bar on screen.

Answer: Screen freeze sometimes happens; it’s when the service that handles the display crashes leaving the phone alive without display. Such problem can easily be fixed by a forced reboot procedure but then again, we really don’t know if the problem is caused by physical or water damage. Nevertheless, it’s imperative you try rebooting the phone using this procedure:

  1. Press and hold the Volume Down button and then press and hold the Power key.
  2. Keep both keys pressed together for 10 to 15 seconds.
  3. The device will reboot after that.

I hope this helps.

Galaxy S7 Edge stays at 89% when charged, reboots by itself

Problem: Hi! I have a Galaxy S7 Edge. I left it charging overnight. When I woke up, it was showing 89% instead of 100% and when I disconnected the charger, it turned off. Then I noticed that it only turns on while charging, but the battery stays at 89%, and even during charging, it restarts by itself. I wiped the cache and did a master reset, but nothing seems to work, it doesn’t turn on. Do you have any suggestion?

Answer: You’ve already ruled out the possibility that it’s a firmware issue so there’s nothing left to do except bring the phone to a shop and have it checked. I think it’s more of a hardware issue than a firmware one. Moreover, I suggest you try reading the following posts:

Other Related Issues

Q: My phone was plugged in last night to charge. My alarm never went off so I checked my phone and it was super hot. I unplugged it, it is now 3 hours later and it is still very very hot. Has not cooled down a bit. I can’t turn it on and can’t hold it very long because it is too hot. Working fine before I went to bed.

A: Don’t attempt to turn it back on and send it for check up. If it heats up even if it’s powered down and not charging, then it must be a problem with the hardware.

Q: Hello, I got Galaxy S7 Edge but the screen display drains so much battery it takes 40% . My brightness is low . What should I do? Thanks.

A: Just leave it be. It doesn’t mean the phone is draining the battery quicker than usual. It could be that there are no other services and apps running and the screen is the only one that demands more power consumption than others. If you’re not satisfied with your phone’s performance, however, reset it.

Q: Battery drain has been significant after last update. Android OS has been using up to 50% of my battery. Tried clearing cache, but wanted to avoid system reset. Is there a fix to this?

A: Well, we won’t know if it’s a firmware issue or not if you won’t reset the phone. So, you’ll be left thinking the recent update messed up your phone and you won’t have a clue as to how serious the problem is if any. Up to you!


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