1. ddjones413's Avatar
    I have a major issue with my S7, I have had it around 30-40 days and over the last three it started to reboot for no apparent reason. yesterday this changed from maybe once a day to constantly throughout the day and even not starting up at all.

    I have run a delete of cache and a factory reset, these did not help with the issue but the factory reset has allowed me to start up my phone. If I try to install anything or operate any apps my phone freezes and restarts (sometimes sticks on Galaxy boot screen), on restart it displays a padlock which opens and then takes me to a screen to unlock my phone with the passcode but not my normal lock screen.

    I have phoned my service provider who told me to take into a shop and they will send it off for repair/inspection not knowing how long it will take, obviously i'd love to avoid this and keep my phone but have failed to find a solution as of yet.

    If anyone has any advice it would be great thanks,

    09-01-2016 05:26 AM
  2. B. Diddy's Avatar
    Welcome to Android Central! Try bringing it to your local Best Buy and ask the Samsung rep to reinstall the firmware. You can also try to do this yourself, using either Samsung Smart Switch (SmartSwitch: Install & update or replace firmware) or Odin (http://forums.androidcentral.com/amb...interface.html).
    09-03-2016 02:30 AM
  3. Raul Huber's Avatar
    Uninstall Facebook app. Most likely you used the pre-installed link to it. Had same issue. Service didn't help.

    After that, reinstall from Google play. Make sure to update it before use.
    09-03-2016 04:10 AM
  4. B. Diddy's Avatar
    This is curious--are you saying that installing Facebook on the phone using a preinstalled shortcut causes the phone to crash unpredictably? Where does the link direct you--not Google Play Store? Also, just to be sure, can you confirm that the Facebook app itself isn't preinstalled, but rather just a link?
    09-03-2016 02:32 PM
  5. k4zz41985's Avatar
    I've just joined this forum because of having this exact problem. Mine even gets stuck in a bootloop when factory resetting. I went into Samsung repair centre and he started knodding as soon as i said freezing and restarting. He said he has seen it a lot and it's the main board.... he didn't even bother looking at the phone..

    Unfortunately my warranty is void because the day after I started having issues, my son smashed my phone so the warranty is void and going to cost me £270.
    floflo likes this.
    09-04-2016 02:13 AM
  6. aksokhal's Avatar
    hey! ddjones413 i am facing the same issue.... plz let me know if your camera is working?... i my case my S7 reboots when i open camera and take photos... then it just reboots.
    09-22-2016 01:10 AM
  7. Wayne Crannell's Avatar
    I have a major issue with my S7, I have had it around 30-40 days and over the last three it started to reboot for no apparent reason. yesterday this changed from maybe once a day to constantly throughout the day and even not starting up at all....

    If anyone has any advice it would be great thanks,

    My problem was Facebook Messenger. Uninstalled and the reboot and overheating disappeared. I think the service that runs the notifications caused it. I tested by reinstalling it, and the problem reappeared.
    10-12-2016 10:56 PM
  8. motimou's Avatar
    The motherboards have become faulty after August update in many phones, send it back to service
    Same problem too
    10-13-2016 12:00 AM
  9. robert peake's Avatar
    my wifes s7 been doing he same thng, rebooting, getting really hot then switching off, just in a loop. ive had to send mine off to samsung to be looked at. Im hoping they will send a new phone rather a refurb but not impresed with samsung really hard to get hold of anyone and they really dont seem to care when delaing with them on the phone.
    samsung said it will take about two weeks trouble is im struggling to find a link n the website where you can track the repair, ive seen it but cant find it anylonger.
    10-17-2016 05:59 PM
  10. CKwik240's Avatar
    My S7 started rebooting itself periodically for about the last week. Started after some update that said it included some Samsung cloud stuff. It has bootlooped only a couple of times, but pulled out of it by itself each time after a couple of restarts. Most times, the only reason I knew it rebooted was because it requested my pin to unlock it and wouldn't accept my fingerprint. I noticed today that power saving mode was on and I don't recall ever turning that on. I turned it off and its been pretty good for the last 8 hours (It rebooted itself about 10 times today before that). I'll report back later if it appears successful or note if it wasn't, but figured others might try this and test it as well. It could be a particular app being placed into power saving mode that could be causing this, but if its a cause, it could be a start to finding a solution.
    10-19-2016 12:02 AM
  11. Makad's Avatar
    This rebooting ozzie must be a Samsung thing. I've had 2 note 4s and a S3 scrapped due to this.
    10-23-2016 04:24 PM
  12. Rob T1's Avatar
    I had the same issue. Had to get my phone warranty relpacrd. It was a bad software update. Factory reset did not help. When I go to my replacement I declined the update
    11-17-2016 07:50 AM
  13. motimou's Avatar
    Mine is off for repair will be back hopefully next week will report back.
    11-18-2016 06:19 AM
  14. motimou's Avatar
    Back on and for now works fine. The service changed the circuit board and back cover. No charge. We have 2 years warranty in Europe.
    11-24-2016 03:13 PM
  15. MathewsJD's Avatar
    I have the same fault with my S7, the phone just crashes when you take a picture with the main camera, it is fine when using the front facing one though; strange and very annoying. Please let me know if you have found a way of solving this
    01-19-2017 09:21 AM
  16. RyMur73's Avatar
    Hi all,. Just joined this forum for this very issue.
    Im in Canada on the telus network. I have had my GS7 since May and until Sept 2016 never had an issue at all. Then I allowed it to update the firmware and have had nothing but rebooting almost every day. I took it into the local store and they sent it away to be repaired (reinstalled the firmware) as far as i know. It was good for a week or two then it began again. Just as before, multiple times a day. Yesterday morning it started rebooting and freezing and this lasted for over half an hour. I wiped it this evening and had to endure an hour of rebooting and freezing before I could get it back to some kind of working phone. When it started yesterday it was updating a couple of apps (not facebook) from the Play Store. I am beyond frustrated with this, i've talked to a couple of other people that Have GS7s and GS7 Edge, all having similar issues. I am planning on sending it out again and hopefully another time after that to get a lemon replacement for it.
    01-21-2017 09:52 PM
  17. Werner Weihs-Sedivy's Avatar
    Hey all,
    have the S7 edge for some 4 months now and have that rebooting issues since a week now (15.1.).
    Most often rebooting is initiated a short time after starting a charging cycle with the original charger.
    I have a moderate number of apps on there (about 150 incl. system apps) Android is V 6.0.1, build is MMB29K.G935FXXS1BPLC, security patch level is Dec. 1 2016
    Anything I can do to get rid of that behaviour?

    hints (also for further inspection) apprectiated!

    Thx, Werner
    01-25-2017 05:09 AM
  18. Werner Weihs-Sedivy's Avatar
    Hey all!

    I was able to fix that faulty behaviour with wiping the system cache (which also brought up one faulty update which the system had not been able to apply). The page DroidGuy (Samsung Galaxy S7 Edge Troubleshooting) did have the right cookook receipt to get it done:

    Delete System Cache

    Minor firmware and hardware glitches can be fixed by deleting the system cache. In fact, we technicians always recommend doing it before performing any of the reset procedures:

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

    Now working completely stabel for more than 24 hours - hope it stay like that :-)
    01-25-2017 11:17 PM
  19. campbell01's Avatar
    Hi there
    first time poster from Aus. My S7 got an update at the end of 2016 ever since then its been freezing , with pixilated line then getting stuck in what I think is a boot loop , getting hot. I have wiped the cache a couple time if times and it still freezes. Sometimes it goes dead straightaway. One thing Ive noticed as it boots to the system menu for wiping the cache it tries to install an update then it fails and shows me a yellow dead android figure then I go and wipe the cache.Is it a faulty update or a faulty board ? Thinking of going to the repair man and getting a new board
    02-26-2017 08:26 AM
  20. jdr88's Avatar
    Joined the forum to report the same issue, started happening the first time early this year. Can't remember if a particular software update caused the issue, but today it's happened again - exactly the same issue as campbell01 described. I'm hoping this is a software/firmware issue and I don't have to send my phone away - this time around I can't even get back into it to do a backup.

    I managed to fix it the first time using delete system cache, this time that gets it into the main screen past the logo, but then freezes and repeats, even in safe mode.. While this is all happening, it also gets quite hot.
    02-26-2017 07:08 PM
  21. Heather Troncoso's Avatar
    My S7 is doing the same thing, it also freezes and the only way to clear it is to use the power and volume keys to restart it.

    I work with Android app developers and they thought it might have been a bad OS upgrade but a factory reset hasn't helped at all and in fact today it got stuck on the home key and the battery went from 88% to 39% in about 20 minutes.

    The phone was extremely hot and I had visions of the battery exploding. Have taken it back to get looked at but I am comforted to see it might be more wide-spread than just my phone
    02-27-2017 05:19 PM
  22. campbell01's Avatar
    well Ive dumped my S7 edge , currently sitting in pieces after I pulled it apart for a look . A very small crack in the screen which occurred after the freezing crashing meant the place I bought it off refused to accept it for a warranty.
    So I bought a A5 instead for 500 bucks. Don't know If I will go for a fragile expensive S8 later.
    03-05-2017 07:27 AM
  23. dkking's Avatar
    I thought it was just me, have this exact issue. Used Odin to reinstall firmware, sometimes it works sometimes it restarts even then. But as soon as I try to install TWRP out install a custom rom making sure the procedure is right, it has random restarts either immediately or after a couple days or a week.

    I do recall it happening around end of 2016.
    07-13-2017 11:21 AM
  24. Haoyee98's Avatar
    Having the same issues! Should've suspected something because the first time I charged it when I bought it it happened, then went away for about a year and 3 months ago the rebooting came back. Fixed with a simple factory reset but now it's back again. Yesterday it was really serious, kept rebooting, had to wait till the battery died out until I can quit the boot loop. Just came back from the customer care with a formatted motherboard but the problem is still here. Suspected motherboard damage. I'm using an exynos chip. Don't wanna spend half the phone's cost just to replace the motherboard when it's obviously not our fault it's faulty =( Any thoughts?
    09-30-2017 11:08 PM

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