What to do if your Samsung Galaxy S7 Edge freezes, lags, slows down and turns off unexpectedly

Among the most common problems #Samsung Galaxy S7 Edge (#GalaxyS7Edge, #S7Edge) owners may encounter are random freezes and lags, system slow down, and unexpected reboots or shutdowns. They’ve been happening with previous Galaxy models and many owners are now starting to complain about them. We, as technicians, are willing to help you fix this issue and provide all possible workarounds, hence, this post.

In here, I will tackle these problems as if they’re connected to each other, although, you may only encounter a problem or two when you’re experiencing general performance issues. Below are a few of the problems we received from our readers that best describe these problems. Read them to learn more about the phone’s behavior and read through the solutions and/or troubleshooting procedures.

Droid guy, I hope you can suggest a fix for my problem. My Galaxy S7 Edge started to slow down even after just a week of use. I’m not really a heavy user but I installed a lot of apps that I often use for my job and for anything else except games. Just to give you an idea how slow it is, it takes about 4 to 6 seconds to open the Gallery, Messages, and any apps. At first it was so quick to respond but now, it takes forever to perform one action. Can you help me with this, please?

Hi guys, I need your help with my S7 Edge. The problem occurred just recently and the phone just freezes when it wants to and the kicker is, it freezes for about 5 seconds so I can’t do anything about it when it does that. I just want my phone to work properly because I had a Galaxy S4 and it didn’t act like this, not even once. I can’t figure out what’s causing this so if you guys have any idea what this is all about and how to fix it, I would surely appreciate your help. Thank you!

There were a couple of instances when my S7 Edge turned off on its own, although, it turned back up when I hit the power key. It might sound like a minor problem but for a brand new phone as expensive as this one, every single issue, no matter how serious it is, matters. I hope you guys understand that and help me find a solution for this issue. I am waiting for your response.

There you go. Those problems may be familiar to you but before going into our troubleshooting procedure, if you have other concerns, try browsing through our troubleshooting page. We already addressed several problems with this phone so there’s a chance we already answer your concern. Try finding issues that are related to what you have and use the solutions we provided. If ever you need further assistance, don’t hesitate to contact us by completing this questionnaire.

Troubleshooting Galaxy S7 Edge Performance Issues

We understand you may have already snapped hundreds of pictures, created your playlists, recorded some videos and even saved some important files in your new Galaxy S7 Edge. That’s why in this troubleshooting guide, we will walk you through in safely finding the problem through systematic troubleshooting.

Step 1: Find out if the problem is with your apps

You may have already downloaded a lot of apps so it might be difficult to pinpoint the culprit but that doesn’t mean you can’t do anything about it. There are two general categories of apps; pre-installed and downloaded or third-party.

If the problem occurred after installing some apps, then you can almost be certain one of those caused the problem. However, if it’s difficult to pinpoint which app it is, you need to boot your phone in safe mode.

  1. Press and hold the Power key.
  2. As soon as you can see the ‘Samsung Galaxy S7 EDGE’ on the screen, release the Power key and immediately hold the Volume Down key.
  3. Continue holding the Volume Down button until the device finishes rebooting.
  4. You may release it when you can see ‘Safe mode’ in the bottom left corner of the screen.

In this state, all third-party apps are temporarily disabled so if one of them caused the issue, then the problem shouldn’t occur.

Even if you already know that one of the downloaded apps is the cause, you may spend a few hours trying to find which one is the culprit. So, to make things a little faster, begin your troubleshooting with the recently installed apps.

Boot your device in normal mode and try to disable or uninstall suspected apps. However, if you’re not into finding the specific app that’s causing all this trouble, then I suggest you reset your phone to uninstall all of them and try to download them one-by-one.

In case the problem still occurs in safe mode, the possibilities are the problem is caused by a pre-installed app or it’s a firmware issue. Proceed to the next step.

Step 2: Find out if it’s about a corrupt system cache

The system cache can easily be corrupted especially after an update as the old files will automatically become obsolete. But unlike the system data, the cache can be deleted without the fear of losing settings, files, and other data, etc. In fact, it’s always recommended you delete the system caches every time you experience issues with your phone’s performance like random reboots, slowing down, unexpected shutdowns, etc.

Once you’ve deleted the cache or wiped off everything inside the cache directory, the new system will create new files and this time, you can reset assured that everything is compatible.

Moreover, it is also important you do this step as some pre-installed apps may have also corrupted their caches causing them to freeze, hang or crash that will eventually affect the general performance of your phone. So, to delete the system cache, follow these steps:

  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.
  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 doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

Step 3: Bring the phone back to its factory settings

After booting the phone in safe mode and deleting the system and the problem still persists, it’s time to do a more complicated and a lot more hassling troubleshooting procedure, the master reset. For this, you need to backup your files, music, videos, photos, apps, data, etc. You can move them over to your SD card or copy them to your computer because they’ll be erased when you follow the steps below.

But just before you do the reset, remove your Google account from your phone and disable any screen locks you may have engaged to make sure the Factory Reset Protection or anti-theft feature won’t be tripped. Once ready, follow these:

  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.

  1. When the Samsung Galaxy S7 Edge shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  2. 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.

  1. Using the Volume Down key, navigate through the options and highlight ‘wipe data / factory reset.’
  2. Once highlighted, you may press the Power key to select it.
  3. Now highlight the option ‘Yes — delete all user data’ using the Volume Down key and press the Power button to select it.
  4. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  5. The phone will now reboot longer than usual.

Step 4: Request for technical support

Or, you can just bring the phone in to your provider and have it’s technician check it up for you. If you’re within the replacement period and the problem can’t be fixed, you may receive a brand new unit. But the point is, you’ve already done everything you could to no avail, it’s time you had an authorized tech help you with it.

We are always willing to hear from you so don’t hesitate to contact us using this form. If you’re contacting us because of a problem, we may take time researching on it, so please bear with us. Rest assured we read each problem we receive and research on them.

22 thoughts on “What to do if your Samsung Galaxy S7 Edge freezes, lags, slows down and turns off unexpectedly”

  1. I was trying to delete the system cache but it’s hung up now..totally unresponsive! What to do? Help!

  2. had my s7 for 12 months started to freeze last wk and also just now please help thanx

  3. I appreciate your help, but the fact that I paid almost 800.00 for this p.o.s. phone, and it took 20 min. to leave this comment because there is literally a delay after every keystroke! Infuriating!!!

  4. Hi and thank you so much you saved my phone by helping me disable the third party apps. i had downloaded a corrupt theme and it shutdown my entire phone over and over again. I had no control over the phone. It wouldn’t let me access any of my apps and it disabled my UI system and all other content. So once again, Thank You.

  5. I am beyond pissed right now. This phones are junk. We are on our second set of them (bought 2) and both do the same thing. Freeze, reboot on their own, lags and has the camera pop up when i press the home button. Went through all kinds of steps with Verizon until they sent the replacements. SAME OLD DANCE AND SONG. They freeze and shut off on their own. I will not keep paying for something that leaves me stranded on the road because the phone stopped working and i have no gps, or if I was to have an emergency the phone is frozen and cant even dial 911? I dont think so. Class lawsuit should be filed against them for selling EXPENSIVE JUNK.

  6. Quick fix:
    My S7 home button was unresponsive. The home button took 4 to 5 seconds to turn the screen on.
    I went into settings, apps, then selected “Force Stop” on all 3rd party apps.
    (You would be surprised to see what is running)
    I restarted the phone and it’s back to it’s speedy self!

  7. i have my s7 edge last august 2016..during the first four months the phone was ok no problem encountered until this january my phone started freezing..Ive waited the battery to get empty to shutdown the phone..it freezes several times so i brought it to the service center..then after it was reformatted it functions normally for 2 weeks..again it started freezing and automatically rebooting for several times that i cannot use the phone..it frustrates me given the phone is so expensive..

  8. Non of the botons are working, also not in combination.
    I just charged mt phone 100% and now it is frozen in the stand by mode. Now waiting until battery is low?

  9. I started getting the frozen screen and the latest was a frozen black screen with only the “Samsung the S7 Edge” showing on the black screen with a CONSTANT blue light. The reboot (Home button and Volume Up key) did nothing. Then on another website mentioned to press both Volume Up Key and Power button for 12 seconds. That luckily worked. I then used your trick to delete the cache and it seems to work now. Funny thing is that it was the Microsoft updates that seemed to have caused the screen to freeze and the phone to overheat. I hop this can help other S7 Edge owners

  10. I have a Galaxy S7 on Tesco Mobile which I got in July 2016. In October 2016 it started freezing and constantly rebooting on it’s own. It went off for repair and Tesco replaced the Motherboard in it. The phone came back and seemed fine……. until now Feb 2017. It is now doing pretty much exactly the same thing again.
    Tesco have said to send it in for repair again, I have asked for a placement as this is the second time but they said they will only replace it if it goes wrong within 30 days of being fixed. So it looks like i’m stuck with it.
    I asked the question of what happens if it does the same thing after July 2017 when the 1 year warranty will be up, they couldn’t give me a n answer. so in a nut shell I am not happy!

  11. my problem is that my samsung galaxy s7 keeps pausing video`s on youtube and whatsapp randomly ive searched the internet for 2 weeks now nothing so show for im getting tired of it

  12. I have had problems with my Samsung S7 edge for months and it seems to be the same problem. It switches off by itself and freezes on when it turns on it was frozen on ‘Samsung S7 Edge Powered by Android’ for 5 hours! This is my 3rd handset and it is still having the same problems, this will be my 4th time sending the phone off to Samsung repair and I have had enough tbh. Its ridiculous, I will not be going back to Samsung after my contract ends.

  13. my samsung galaxy 7S keeps freezing and staying frozen for hours until the battery runs out then it will go black then i will have to charge it again but it freezes for no reason and i will have to go without a phone for hours. And to be honest it pisses me off a lot!!!!

  14. OK My first edge 7 worked brilliantly for 2 months and started rebooting it self- then the camera got unstable and the pics wouldn’t load phone was sluggish- apps disappeared and then it got where it powered off and only a hard reboot would get it back on and sometimes it would just turn it on again.. That was after installing the sprint PL6 update they forced out a couple weeks ago or so. Samsung looked at it and only had a PK5 software and couldn’t take it back I had to have it completely flashed by sprint- same issue. They replaced it with a new phone..Now I had J6 or something for software. It wants to install the PL6 back to it.. but I thought that was the issue.. as the new one is doing the same thing.. not as bad, but I”m afraid to do the new update and it’s driving me nuts. I want to stay with Samsung- but I already went thru 2 Note 7 debacles already and I don’t want to master reset yet another

  15. Hello
    I have read the procedures
    But my problem isn’t an app or 3rd party app
    It happens when i mount my SD card
    Its. 125 originl samsung memory card that came with the s7 edge.. And i only used 50 to 60 GBs from it
    When i mount the SD card.. It act normal for about 30 to 60 seconds.. Then it suddenly freezes.. It doesnt restart on its own it.. Nor i can lock it or anything
    All i can do is force restarting it by holdong Power + home -+ volume down for 10 seconds
    And then it happens again and again and again after 30 to 60 seconds
    It stops when i unmount the SD card
    What should i do.. Please help

  16. On the other hand, if the phone crashes while you are resetting the cache or while in safe mode after you have tried a factory reset, you have a hardware problem. I just had the mainboard on mine replaced, and it works like a dream again.

  17. I tried rebooting and nothing popped up. No boot menu, no safe mode, nothing. It just restarted and i did it right numerous times.

  18. hello thedroidguy i am samsung galaxy s7 edge user my problem is the back key n recents key didn’t work properly.. right now im juz keep using home key.. its so bad.. please help me.. thanxxx

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