What to do if Galaxy S7 freezes after after installing Nougat update, other issues

Hello and welcome to another #GalaxyS7 troubleshooting article. Our focus for today’s post is to address the common freezing issue that sometimes occur after installing an Android update. We hope you’ll get something useful in this post.

If you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page.

When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Below are specific topics we’re bringing for you today:

Problem 1: What to do if Galaxy S7 freezes after after installing Nougat update, keeps freezing in Recovery Mode

Hi. I recently installed an update for Nougat that messed up my S7. It started freezing in a few seconds after reboot. I’ve tried factory reset, but the process was interrupted by this freezing and rebooting thing. Tried cache reset in recovery mode, still nothing. Also tried factory reset inside recovery mode, no avail. What bugs me is that this freezing happens every inside recovery mode: I have just a few seconds to select the options before it freezes. In recovery mode, however, it does not reboot automatically. Tried to flash a new stock ROM with Odin, but the problem persists. Is it a hardware issue? And if it is, how can an update cause this? Thanks. — Candian

Solution: Hi Candian. Updates can sometimes result to a hardware issue if the storage device becomes corrupted for good. This sometimes occur if update is interrupted for some reason. This is a rare occurrence though and Samsung Galaxy S7 storage device can appear healthy even if one intentionally disrupt the update, for instance, by turning off the phone. Permanent hardware damage can happen at random so we hope that this is not your case. Since the phone won’t allow you to complete a factory reset in Recovery Mode, we suggest that you attempt to reflash the bootloader instead. If you can do it successfully, there’s a chance that you’ll be able to boot the phone back to Recovery Mode and perform a factory reset. If it won’t help at all, you should consider calling Samsung so they can take a look at the hardware.

Below are the steps on how to flash a bootloader. It’s basically similar to flashing a firmware with the difference being to change the bootloader software only and not the operating system. Exact steps may be slightly different from our guide below so be sure to check other guides for the correct format.

  1. Look for the correct firmware for your phone model and download it. Make sure that you select the right one. It should be the same exact firmware that ran previously on your device. We assume that you list down the firmware version somewhere. If you did not take note of it before, there’s a chance that you may pick the wrong one. As you may know now, using an incorrect firmware can cause complications so good luck with that.
  2. Let’s now say that you have identified the correct firmware. You then want to download it to your computer. The firmware file should have a bunch of files in it like AP_, BL_, CSC_, etc.
  3. Look for the file that starts with a label BL; this should be the corresponding bootloader file for this firmware. Once you’ve identified the bootloader file, copy it to your computer’s desktop or to any other folder that you can easily access.
  4. Proceed with the rest of the flashing procedure using the Odin program.
  5. In Odin, click on the BL tab and make sure to use the bootloader file you’ve identified earlier.
  6. Now, make sure that the “Device Added” status and its “ID:COM box” has turned blue before hitting the START button. This will initiate the flashing of your phone’s bootloader.
  7. Restart the phone once the procedure is finished.

Problem 2: Galaxy S7 edge won’t turn on

I own a S7 edge. I have been having this issue since 2 weeks ago when i was charging my phone and all of a sudden the always on display went black and screen frozen with red led light on even after i unplugged the charger. I have tried rebooting by using volume down and power button hold as well as volume up + power + home button but the phone is not responding to my command. Initially i was thinking of waiting for the phone to drain out of battery as i think that it was a system crashed but the waiting was too long. I need help.. Please help me!!! Thank you and your help will be much appreciated. — Eugene

Solution: Hi Eugene. You only have a very limited set of troubleshooting that you can do for this issue since the phone does not charge or power on anymore.

Use different set of charging cable and adapter

A good first thing that you must do is to ensure that the charging accessories — USB charging cable and adapter — are not the problem. Make sure that you use a different USB cable and adapter so you’ll know if the main reason for the problem is not due to faulty accessories.

If you tend to charge in a favorite outlet in your house, consider plugging in the adapter to another outlet in the house as well.

Check charging port

One of the easily damaged components in any smartphone is the charging port. Everyone uses it for charging and more moving data and if one is not careful, the pins can be damaged fairly easily. If possible, try to use a magnifying tool to inspect the inside of the port. If a metal contact is bent or out of place, your phone may not charge properly or at all.

Sometimes, lint or dirt may accumulate inside the port as well, blocking the cable from making contact with the metal contacts. This can result to erratic charging. If you see some dirt or foreign object inside, try to use a can of compressed air to dislodge it. Avoid sticking something in the port to prevent damaging the pins.

Boot the phone to different boot modes

If your phone was not misused — dropped, wet, or exposed to elements (water, heat, cold) — and the issue simply occurred out of the blue, you must try to see if you can turn the phone back on to alternate modes. These modes run different codes and does not need Android. If your phone turns on fine when in any or all of these modes, the most likely problem is  Android-related. This gives you a chance to fix the problem by doing a factory reset or flashing.

Below are the steps on how to boot your phone to alternate modes:

Boot in Recovery mode

  1. Turn the phone off. This is important. You won’t be able to boot to Recovery Mode when the phone is off in the first place. If the charging light is lit, or if the phone still makes sound or vibrate notifications, it must be on. You must wait until the phone shuts down on its own if you can’t power it down normally.
  2. Charge the phone for at least 30 minutes.
  3. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  4. When the Samsung Galaxy logo shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  5. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  6. You can either wipe the cache partition or do a factory reset when in this mode.

Boot in Download Mode

  1. Turn the phone off. This is important. You won’t be able to boot to Recovery Mode when the phone is off in the first place. If the charging light is lit, or if the phone still makes sound or vibrate notifications, it must be on. You must wait until the phone shuts down on its own if you can’t power it down normally.
  2. Charge the phone for at least 30 minutes.
  3. Press and then hold the Home and Volume DOWN keys, then press and hold the Power key.
  4. When the Samsung Galaxy logo shows on the screen, release the Power key but continue holding the Home and Volume DOWN keys.
  5. Wait until the Download screen appears.
  6. If you can boot the phone in download mode but not in other modes, that means that your only way out may be to flash a stock or custom firmware.
  7. Use Google to look for a guide on how to do it.

Send it in for repair or replacement

If your phone won’t turn on at all, nor would it boot to any of the modes above, that’s a sign that there must be something wrong with the hardware. You should contact Samsung so it can be repaired or replaced.

Problem 3: Galaxy S7 edge screen is black, won’t turn on

My Samsung S7 edge just blacked out. I’ve tried to push all 4 buttons at the same time as well as different combination of buttons but my screen is still blank and does not turn on or show the galaxy loading logo. When I press the home button occasionally flashes the side touch buttons and also it occasionally shows blush flash at the top. But my screen is still blacked out. It was also put on charge so I know it has full battery. Also I don’t know what my andriod version is and as my phone does switch on I can’t check. — Atika.sundus

Solution: Hi Atika. If the phone still charges fine and appears to power on (as indicated by side touch buttons still working), the problem must be isolated to the screen only. This means that the phone is not dead at all but the screen probably is.

Smartphone screens are usually robust and can continue running for years at a stretch. We seldom encounter Samsung screens going bust on their own. In most cases, screens only stopped working after the phone has sustained physical damage. If your phone was dropped or has become problematic after it got wet, don’t waste your time looking for software solutions. You should instead focus your time and effort in having it checked by a technician. Unnecessary shock and/or water can lead to all sorts of problems and you can’t make them go away by tweaking the software.

However, if nothing of these sort happened and the phone simply loses its ability to display images suddenly, it’s possible that software may be to blame. Consider booting it to safe mode first and see what happens. Safe mode blocks third party apps and services so if the screen returns, a content must be to blame. To boot to safe mode, follow these steps:

  1. Charge the phone for at least 30 minutes.
  2. Press and hold the Power button.
  3. Once the Samsung Galaxy logo appears, release the Power key and immediately press and hold the Volume Down button.
  4. Continue holding the button until the phone finishes rebooting.
  5. Once you see the text “Safe mode” at the bottom left corner of the screen, release the Volume Down button.
  6. The only difference of safe mode from normal mode is that the former prevents third party apps from running. If you can boot the phone in safe mode but not in normal mode, uninstall all apps until the issue (that prevents you from booting normally) is eliminated.

Factory reset via Recovery Mode

Should nothing change when the phone is in safe mode, or if you can’t boot to safe mode at all, you should then try to see if you can get the phone to boot to Recovery Mode. If the phone goes to Recovery Mode, which means that it works, the most likely reason for the trouble is software-related. Make sure that you do a factory reset.

On the other hand, if the problem stays regardless of the steps you tried, that’s a clear sign that it must have sustained damage for some reason. You should have the hardware checked.

 


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