In this post we are going to address two problems of Samsung Galaxy S7; failure to boot up in normal settings and random reboot problem. As this phone released about 2 years ago many users might have issues with boot or power related. We think this post will be very helpful for them.
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Please provide enough details regarding your issue including exact error messages you are receiving. If so we will be able to provide you with a better solution. And also it would be very helpful if you mention the previous troubleshooting methods that you have tried. Accordingly we will help you. 🙂 So let’s move on to today’s topic!
Problem 01: Galaxy S7 edge is not boot in Recovery Mode
Hi! My Samsung S7 Edge is about 1 year old now. Today it turned off suddenly. I am really upset because I knew it was charged up to 70% at least. I tried to turn it on and to charge it, but it won’t. Initially I tried soft reset (Power button + Volume Down) and it started to charge showing the charging signal with the appearance of Samsung logo. But the logo persisted without further response. Then I tried doing hard reset (Power Button + Volume up + Home Button) but it didn’t work. The only thing in the screen was the Samsung logo. It remained in the screen for about an hour.
After that I tried Power Button + Volume Down + Home Button, and a box appeared saying “Warning! Indicate to Download a Custom OS”. The box had two options 1. Download Custom OS, 2. Restart the phone. I tried the first option but it remained stuck. When trying to restart but again the logo showed up. Please help me with this. Thank you.
Solution: hello there, before doing a master/factory reset you need to boot your phone to Recovery Mode. Before doing that you have to turn off your phone first and make sure it is turned off properly. This is very very important! There is no point in pressing Power, Volume up and Home buttons when the phone is ON. If you are unable to it by the power button, let it turn off itself by letting the battery to drain. Charge the phone for about 45 minutes if you let the battery to drain off. Then try boot it back to Recovery Mode.
If you cannot do it that might be due to a corrupted bootloader and try reflashing the bootloader. Or else contact Samsung to repair or replace your phone.
Following are the steps on how to reflash a bootloader. Steps may vary with the phone model so use some other guides also.
- Download the exact firmware for your phone model. It has to be the exact firmware that is running in your phone now. We hope you know the version. If you don’t know you might choose a wrong firmware. That will lead to complications. Be aware!
- After you download the software to the computer, the firmware folder must have several files like AP_, BL_, and CSC_ etc.
- Select the file that starts with BL; this is the corresponding bootloader file. Then copy it to the desktop or to any other folder with easy access.
- Launch with the rest of the flashing procedure using Odin program.
- Click on BL tab in Odin and use the bootloader file you selected earlier.
- Once the “Device Added” status and its “ID:COM box” has turned blue press the START button. This will start the flashing of the bootloader of your phone.
- After the procedure is finished restart the phone.
Problem 02: Galaxy S7 Edge keeps restarting on its own
Hello! My Samsung S7 Edge is about 2 years old. I bought it from HK and now using it in India. A several months ago it began to restart on its own, sometimes it shows some text in the screen and then restart. And also it is not responding to anything till the battery drained out. After that the only thing it allows is to restart.
I took it to a service center but they couldn’t find any problem. They restarted the phone using a test battery. Today the same thing happened and it was unresponsive. Why is it happening? Is this an issue with the battery?
Please help me to solve the problem.
Solution: Howdy! This is not a simple issue. Initially, we don’t have a way to check the entire software log to find out the possible cause for the malfunction. It will be only possible if you have Samsung’s factory level diagnostic tools. Then the problem you are facing can be caused by several possible issues. Not just due to bad software. As we don’t know the state of the software of your phone there is no way for us to know the real reason for this problem. But, assuming that the technicians examined the device fully, the issue might be due to software or app.
You can do two thing to check them; observing the phone in safe mode and factory reset.
Restart your phone to safe mode
This will help if the problem is due to a damaging third party application. This apps will be blocked in safe mode. You have to run the phone in safe mode for minimum 24 hours to notice the change. If the phone works normally you have to keep uninstalling third party apps one by one until the problem is gone.
Given below are the steps to boot to safe mode.
- Turn your phone off.
- Press and hold the power button.
- When the “Samsung Galaxy S7” logo showed up, release the Power key and quickly press and hold the Volume Down Button.
- Hold the button till the phone finishes rebooting.
- When the “Safe Mode” appears at the lower left corner of the screen, release the volume down button
Return all software settings to their defaults
- Turn your phone off.
- Press and hold the Home and Volume UP keys.
- Then press and hold the Power key.
- When the “Samsung Galaxy S7” logo showed up, release the Power key but continue holding the Home and Volume Up keys.
- When the Android logo show up, release both keys.
- Leave the phone be about 30 to 60 seconds.
- Navigate using the Volume Down key and highlight “Wipe data/factory reset”.
- Then press the Power key to select it.
- Then select the option Yes – Delete all user data using the Volume Down Key and press the Power key to select it.
- Once the Master Reset is finished, select “Reboot System Now” and press the power key.
- Wait for the reboot is finished. That may take longer than usual.
Make sure to run the phone at least for 24 hours without any app. By doing that you can see whether the issue is persisting or not.
Beware of apps
If your phone works fine after a factory reset and not doing so after restoring apps, one of those third party apps are causing the problem. So filter your apps and install known and well-functioning apps only. Inexperienced app developers may commit coding issues that may affect your phone. If you are facing issues very frequently due to malfunctioning apps be careful. Do more and more research on finding a good app. 🙂