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How to fix your Samsung Galaxy S7 that won’t boot up, stuck on Samsung logo after Android 7 Nougat update [Troubleshooting Guide]

  • Understand why a phone as powerful as the #Samsung Galaxy S7 (#GalaxyS7) may end up not being able to boot up successfully after the Android 7 #Nougat update and learn how to troubleshoot your device if this problem happens to you.
  • Learn how to troubleshoot your phone if it got stuck on the Samsung logo after an update and couldn’t reach the home screen.

Getting stuck during boot up after a firmware update could mean that the new firmware is causing the problem. However, as an owner, you have to perform a some troubleshooting to know what the real cause of the problem is and formulate a solution that might just solve it.

In this post, I will help you troubleshoot your Galaxy S7 that just won’t boot up successfully or gets stuck on the logo during boot up. These issues reported started after the most recent update according to our readers. If you own this device and are currently experiencing similar issue, then continue reading below to understand why they occur and learn how to troubleshoot your phone in order to fix the problem. Click on the link below to jump to a specific issue or section…

But for those who found this page looking for a solution to a different problem, then drop by our Galaxy S7 troubleshooting page for we have already addressed hundreds of problems reported by our readers who own this phone. Just find issues that are similar with yours and use the solutions and/or troubleshooting guides we suggested. If they don’t work on you, however, feel free to contact us anytime by filling up our Android issues questionnaire.

How to troubleshoot Galaxy S7 that won’t boot up after a firmware update

Problem: There was an update that I received a while back and it seems to have messed up my phone pretty bad. My Galaxy S7 can no longer boot up after I installed such update. What it does is just start the screen up, show the logo and then the black screen. After that, even if the device is left for an hour or two, the same thing shows–black screen. I haven’t encountered this kind of issue before so I really don’t know what to do. Can you help? Thanks a lot!

Troubleshooting: There are four possibilities here, provided that this problem started after the firmware update: some apps (third-party) may no longer be compatible with the new system and crash during boot up affecting the normal process and leaving the system frozen, some system caches got corrupted or are no longer usable by the new firmware, some system files or data got corrupted or are already obsolete that they may cause conflicts when used by the new system, or the firmware itself is corrupt or lacking some important files due to interruption during download and/or installation.

Try to troubleshoot your phone by following these steps…

Step 1: Isolate the problem by attempting to boot your phone in safe mode

We have to check, first of all, if your third-party apps have something to do with this problem and if your device can actually boot up in safe mode. Booting in this state will temporarily disable all third-party apps. So, if one or some of your downloaded apps is preventing your device from starting up normally, then it should boot up in this mode. Here’s how to do it…

  1. Press and hold the Power key.
  2. When Samsung Galaxy S7 logo appears, release the Power key and immediately hold the volume down key.
  3. Continue holding the Volume Down key until it finishes its rebooting.
  4. When “Safe mode” appears on the screen immediately release the Volume Down key.

If your Galaxy S7 has successfully booted up in this mode, then our suspicion that one or some of your third-party apps caused the problem is confirmed. You just have to find that app and try clearing its cache and data or uninstall it to see if the problem gets fixed. This is how you clear the cache and data of an app in your phone…

  1. From Home screen, tap App icon.
  2. Tap Settings.
  3. Tap Applications and Application manager.
  4. Swipe to ALL tab.
  5. Find and tap suspected app.
  6. Touch the Force Close button first.
  7. Tap storage.
  8. Tap Clear cache and Clear data, Delete.

I understand that it’s really not easy to find the app that’s causing the problem, so if you think it will take you a couple of hours to figure out which one it is due to the number of apps installed on your phone, it’s better you simply have to backup your files and data and then perform the factory reset.

  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.

However, if your phone still refuses to boot up successfully in safe mode, then we might be facing a firmware issue.

Step 2: Attempt to boot up your phone in recovery mode and wipe the cache partition if successful

You tried booting up your phone in safe mode to no avail so in this step, try to start your phone up in recovery mode and delete the system cache if the boot up process is successful. It deletes obsolete and corrupt caches that might still being used by the new system during bootup and that might be the reason why the device cannot reach the home screen. Since we cannot delete caches one by one, you have to wipe off the entire directory where all system caches are stored. Here’s how…

  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 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.

It might be the only thing you have to do in order to fix this issue or you may need to do the next step.

Step 3: Start your phone up in recovery mode and perform the Master Reset

You only have to do this if your device has successfully booted up in recovery mode but the wiping of the cache partition failed to fix the problem. This will delete all your files and data especially the ones that are saved in your phone’s internal storage you actually don’t have any other choice but to do this. It’s up to you if you want to see a technician prior to doing this or not but if you decided to just go with it, 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. 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 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.

I am hoping this troubleshooting guide can help you.

How to troubleshoot your Galaxy S7 that gets stuck on Samsung logo after the update

Problem: Have you guys encountered an issue before wherein the phone just gets stuck on the logo while starting up? I have a Galaxy S7 and it’s doing like that. It’s almost a year since I bought and I’ve had downloaded countless updates ever since but the most recent seemed to have damaged by phone real good. Whenever I tried to boot it up, it gets stuck on the Samsung logo and doesn’t go to the home screen. Please help me fix this problem, thanks.

Solution: Since, you mentioned that you did an update on your phone there is a big possibility that it is a firmware-related issue. It is also possible that it’s a hardware problem but in this case, let’s have to focus on the firmware issue first.

At this point, all you need to do is to isolate the problem by performing the basic troubleshooting procedures to determine what really triggered the problem that left your phone not being able to boot up completely. To begin with, try to boot the device in Safe mode to determine if there are downloaded applications preventing the device to boot up successfully. This procedure will run your phone in its diagnostic  stated wherein all third-party apps will be disabled temporarily and only the pre-installed apps will run. So, while in this state and the issue is not happening, most probably there’s an app that caused it. You can try to clear the cache and data of the suspected apps and if that won’t work, uninstall them to see if the issue gets fixed.

While in Safe mode and the issue still occurs, you can perform the next procedure by deleting the system cache. There is always a possibility that those files got corrupted and if they did, issues like this occurs most of the time. Try to boot up your phone in safe recovery mode and if you’re successful, proceed with the clearing of the cache partition to delete all system caches. Don’t worry though because they will be replaced with new ones. The steps on how to boot your phone in recovery mode and wipe the cache partition can be found in the first problem.

Lastly, just like the first problem, if you’ve successfully started your device up in recovery mode, wiped off the cache partition but the problem remained, then you have do the master reset. You will lose all your files and data but you don’t have much of an option at this point, so, in a bid to bring the phone back to life, try to reset it. Refer to the step-by-step procedure above on how to reset your phone.

However, if it failed to boot up in recovery mode, then you really have to send it in for repair or checkup by a technician.

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3 Comments

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  1. how to fix my Samsung j1 2016 if it freez and restart itself lollipop?  I’ve tried factory reset  but still does the same. Sometimes it just stuck on a Samsung logo after restarting while in my pocket. I’ve checked running apps and all applications so I found that 5 apps are not installed like container agent2 and knoxbbcprovider and other knox’s. I also updated my software so what I can do?

  2. My phone’s screen goes black after the logo, which means it’s stuck between the logo and the home screen.

  3. Dropped S7, again, from 6 inches this time. Screen black, occasional rainbow flashes, blue light flashes. no screen damage, had phone over a year, taken multiple drops of 50 plus feet, no harm. Recently received new upgrades. Verizon is warranting it out. new phone in next 2-3 days. meantime, how to connect my PC to it via USB to do data recovery and full wipe. Dr.Phone (?) program is a joke, freezes up . Running windows 8.1 on PC, HP Pavilion 23 all-in-one.

    Thank you, looking forward to your prompt reply.

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