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Samsung Galaxy S6 bootloop issue

What to do if your Galaxy S6 is stuck in Samsung logo screen, other boot issues

Flashing or changing the software in a #Samsungd phone is common but still causes problems from time to time. Some of such problems, particularly for the #GalaxyS6 series, are mentioned below so if you are experiencing issues after an update or flashing, this post may be helpful.

s6 with game

Below are the topics discussed in this post:

  1. Galaxy S6 is stuck in Samsung logo screen
  2. Galaxy S6 bootlooping after tripping Samsung Knox
  3. Galaxy S6 charging rate is very slow
  4. Galaxy S6 stops charging

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


 

Problem #1: Galaxy S6 is stuck in Samsung logo screen

Phone is: Samsung S6 on MS-G920T T-Mobile

Came with Lollipop 5.0.2

ITA update to 5.1.1

Using XDA non-Knox trip sequence rooted described in the attached pdf.

Good sole on internet from changed IMEI after some gymnastics via Hamanchi. All worked on T-Mobile network on my SIM.

But there were some small problems, and trying to fix them I followed some XDA process and inadvertently wiped SYSTEM folder.

Black and white Samsung logo showed up.

Initially I could only get to green Downloading screen.

ODIN – trying to flash 5.0.2, 5.1.1 firmware OF and OH did not work.

By observing and trying various described ways I finally got to the Android recovery menu.

My current procedure to get there is here:

Turn off holding Down+Power

The b/w Samsung logo will automatically come up and stay that way forever

Hold Down+Power+Home until screen goes black and move finder from Down to UP while still holding the Power+Home

as soon as black and white Samsung logo comes up AND continue holding UP+Power+Home until Android  flashes and recovery menu comes up.

Then I did go through the described wipe cash, and factory reset and some more wipe cash with reboot system in various combinations and always ended on black and white Samsung logo screen.

Tried to flash sboot but failed.

Then the new firmware showed up for T-Mobile, the G920TUVU3DOI1_G920TTMB3DOI1_G920TUVU3DOI1_HOME.tar.md5.

Tried to flash firmwares in sequence: OI, OF, OH with FAIL result.

But the above OI1 was a success – except that I do get the b/w Samsung logo.

On top of the Android recovery menu scree I can see:

LMY47X.G920TUVU3DOI1

From the recovery menu only power down selection is useful as it does turn the phone off  until I turn it on. The power button does not power off – it just boots back on.

Apply update from cache gives yellow text in the bottom of the scree: “APPLY_CHEK is deprecate.”

I have no clue how to use e.g. first 3 menu items.

Reboot to bootloader – just brings the b/w logo .

View log displays row upon row of things I have no clue about – pages of it.

On the very bottom of the screen – in yellow – there are two lines:

“dm-verification failed…

Need to check DRK first…”

Please help. — Newb

Solution: Hi Newb. First of all, we would like to tell you that your situation looks impossible to fix from your end. Based on your description, you have already done everything that a user can do in this situation. The best thing that you can do is to go to your carrier or retail store where you bought if from, play dumb, and ask them if they can replace the phone for you.

As mentioned in this post, flashing is not 100% safe. Current flashing technology has not totally eliminated the risks involved in the process. There are variables that usually come into play that are beyond a user’s control during the procedure. These variables include faulty USB ports, unreliable USB control software, power interruption, leftover data from previous ROM, etc. Of course there are also user-initiated factors (like using an incompatible or incorrect ROM and installation of problem third party apps) that can also lead to problems like the one you have.

The usual set of troubleshooting and solutions include wiping the cache partition, restoring the phone’s default via factory reset, flashing a new ROM or unrooting from stock ROM. Basically all the things you have so far.

You have obviously hit a one in a million snag in flashing and the only way to revive the phone is by letting Samsung fix it for you using more advanced technology. If you can avoid having Samsung check the device for you, please go that route. Once they know that the software has been changed they will automatically tag the phone as out of warranty.

If your phone is part of a carrier service plan, consider going to your carrier’s store and try to appear as clueless as possible and do not mention that you attempted to flash the phone in any way. If you’re lucky, they may simply give you a new phone instead of going over a thorough process of checking the software status.

Problem #2: Galaxy S6 bootlooping after tripping Samsung Knox

Hi Guys. I have a power up loop issue wherein  the phone will begin to boot but only get as far as the first screen which says ” Samsung Galaxy S6 powered by Android” before it loops back.

So all I get is this first screen continue to flash and the phone will not progress any further.

I had not installed any apps previously that day, although I have two app updates. However, this problem only occurred when I activated Samsung Knox following route system scan with the built-in security feature.

Can you let me know why this loop is happening how I can fix it, ie turn KNOX off again and get my phone booting up properly?

Thank you for your time.

Kind regards. — Brandon

Solution:  Hi Brandon. Tripping the Samsung Knox counter is not supposed to affect the phone’s boot process unless you attempted to flash a ROM that may have triggered it. These are the things that you can try to fix the issue.

Clear the S6 cache and data

If the phone still boots in recovery mode, try deleting the cache partition first to get rid of any corrupt or leftover files. Cache partition also keeps update files from Google Play Store so it’s a good way to ensure that only relevant files are stored here. To delete the cache partition, just follow these steps:

  • Turn off the device.
  • Press and hold the following three buttons at the same time: Volume Up key, Home key, and Power key.
  • When the phone vibrates, release the Power key but continue to press and hold the Volume Up key and the Home key.
  • When the Android System Recovery screen appears, release the Volume Up and Home keys.
  • Press the Volume Down key to highlight ‘wipe cache partition.’
  • Press the Power key to select.
  • When the wipe cache partition is complete, ‘Reboot system now’ is highlighted.
  • Press the Power key to restart the device.

Wipe Galaxy S6 data

If deleting the system cache won’t do anything, proceed to restoring the phone’s defaults via factory reset. Also known as master reset, this procedure will delete your personal data so be prepared to lose them after doing it. Here’s how:

  • Turn off your Samsung Galaxy S6 Edge.
  • Press and hold the Volume Up, Home and Power keys together.
  • When the device powers on and displays ‘Power on logo’, release all keys and the Android icon will appear on the screen.
  • Wait until the Android Recovery Screen appears after about 30 seconds.
  • Using the Volume Down key, highlight the option, ‘wipe data/factory reset’ and press the Power key to select it.
  • Press the Volume Down button again until the option ‘Yes — delete all user data’ is highlighted and then press the Power key to select it.
  • After the reset is complete, highlight ‘Reboot system now’ and hit the Power key to restart the phone.

With luck, the phone should be able to boot normally afterwards. If nothing still changes though, proceed to the next step.

Flash stock or custom ROM

Assuming still that your S6 still boots in recovery mode, another good way to fix this trouble is by flashing a new ROM. Use Google to search for the correct stock ROM for your phone. Make sure that you are installing the right firmware in flashing to prevent further complications.

As mentioned above, flashing is not a guaranteed solution and may even lead to an entirely different problem.

We recommend that you restore the phone’s defaults by flashing from stock ROM. Firmwares or ROMs are model and carrier specific so always ensure that you get the right one before doing this procedure.

Get a phone replacement

If all the solutions provided above won’t work, the phone is most likely beyond saving on your end. Asking for a replacement phone is your only remaining solution.

Problem #3: Galaxy S6 charging rate is very slow

I have had this phone for 4 months and I have a few issues. First one is the screen. In between the volume buttons on the left hand side a small crack appeared. Over the space of a few days the crack has gone diagonally across the screen. The phone is in a Samsung designed case and I have not dropped the phone.

Also I had had the phone on charge for 2 full days and it has only reached 61%. When I put it on charge the battery life was very low 6%.

Also the phone vibrates randomly for periods of up to 5 minutes then stops. It also sends blank messages.  I don’t have many apps on this phone and no games. I am not sure what to do next as I have been to my provider and they advised there would be no point in sending phone to Samsung. Any help you can provide would be great. Kind regards. — Heather

Solution: Hi Heather. It’s interesting to know that your phone appears to have multiple issues even when it was never dropped.

Obviously, we cannot fix the cracked screen issue. An S6 sports the new Corning Gorilla Glass 4, which is an extremely drop resistant screen. This type of glass is very durable and doesn’t crack under normal circumstances. It doesn’t mean, however, that it can’t crack on its own. Maybe the screen has a factory defect that fails to manifest during routine quality checks. You have to find a way to have the screen or phone replaced.

To fix the other issues, consider doing a factory reset first so you will see the difference after restoring the phone’s defaults.

Problem #4: Galaxy S6 stops charging

Hello guys! well my phone was working perfectly fine, my husband and I went to a concert so i was recording and when we got out my phone was at 5%. So i plugged it in to our car charger that we always use and it went up to 6% in about a min. so i saw it was charging and when i look down and see it again my phone was completely off. No notification light and if i try turning on it won’t vibrate or anything — doesn’t charge.

I’ve left it charging with original charger for a whole day and nothing. if i plug it in to my computer the computer wont catch it and I have already tried all the way to bring it back to live that i have read on here but they don’t work, everything i want is all my pictures and videos back form my son when he was little but it sucks because i didn’t back them up nowhere and my computer wont read the phone and the phone wont turn on what so ever please help! — Kassandra

Solution: Hi Kassandra. Please refer to this guide for things you need to do to fix the issue: How to fix a Samsung Galaxy S6 Edge that’s not charging.

 


Engage with us

If you are one of the users who encounters a problem with your device, let us know. We offer solutions for Android-related problems for free so if you have an issue with your Android device, simply fill in the short questionnaire in this link and we will try to publish our answers in the next posts. We cannot guarantee a quick response so if your issue is time sensitive, please find another way to resolve your problem. 

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.

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Galaxy S6 edge randomly reboots, keeps bootlooping, battery level is erratic, other issues

If there’s one issue that seem to occur in almost every smartphone, including the #GalaxyS6, it’s power/boot problems. We usually receive a lot of reports about the S6 failing to turn on or boot up so we decide to publish some of them here again today.

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: Galaxy S6 overheating, screen showing random colors, won’t turn on

Hi. So i woke up this morning and i wanted to check the time on my Galaxy S6. So i took my phone and turned it on, but suddenly when i took it in my hand it started vibrating and never ended. I was afraid that it was broken, so i turned the screen on and unlocked it. It was pretty bright in my room so i turned up the brightness, suddenly while i was turning the brightness up the display started flickering! Half of the screen was orange, and it filled up with static and glitched out , and then it rebooted. Shortly, the LED started freaking out and displaying random colors along with the display flickering and then it overheated with an endless black screen. — Casey

Solution: Hi Casey. Has your phone been dropped, physically impacted, or got wet? Looks like the phone has a hardware issue. No software error can cause all the symptoms you mentioned all at the same time. The screen, for instance, seldom glitches the way you describe it here unless it’s been damaged, or unless the motherboard is totally messed up. Since you can’t remove the battery easily, try to wait until the phone turns off by itself after the battery is drained fully. Then, charge the phone again and see if it boots back up normally. If you’ll encounter the same symptoms afterwards, don’t waste your time looking software solutions. You won’t most likely fix the problems at your level. Instead, consider bringing it to Samsung or to an independent service center so a technician can check the phone physically.

Basing on the problem description above, this will most likely involve a motherboard repair or even a replacement. Be sure to prepare some cash for repair fee and parts replacement.

Problem 2: Galaxy S6 edge randomly reboots, keeps bootlooping, battery level is erratic

Hello there. I need your help regarding my Galaxy S6 edge. Well i was simply playing a song connecting via aux cable in the car. My battery was at 64% and all of a sudden the phone started heating up and the battery dramatically dropped very fast to 0% and the phone switched off. I left it to cool off and tried to charge it but it wouldn’t charge. i kept trying. i changed the chargers and the ports and adapters but it still wouldn’t charge. i left it for a day and tried charging again and all of a sudden it was charging. After that i tried to make a phone call while it was still on charger at around 15%, it heated up again and switched of and refused to charge again. Please help me to sort out this problem better.

Another problem with the phone is that it always goes into boot loop. If the phone switches off either due to battery outage or me restarting it, time and again it goes into boot loop. — Zamel16vee

Solution: Hi Zamel16vee. There’s a chance that there’s a problem with the battery so the first thing that you want to do is try to recalibrate it. This is a simple procedure but it requires some time and effort to do. If you haven’t done it before, follow these steps:

  1. Use the phone by playing games or doing tasks to hasten power discharge, until the phone turns itself off.
  2. Charge the phone without turning it back on.
  3. Wait until the battery says it is fully charged to 100%.
  4. Wait for an hour before unplugging the phone from the charger.
  5. Use the phone until battery reaches 0% percent. The phone should turn off by itself.
  6. Recharge the phone to 100%, wait for an hour before unplugging it again.
  7. The battery should now be recalibrated. Observe how phone works.

If the issue continues after a recalibration, the next logical step is to deal with a possible operating system glitch. Bugs can sometimes develop over time and sometimes they can result to significant problems like the ones you’re experiencing. To know if the reason for your problems is software-related, you must do a factory reset. Here’s how:

  1. Create a backup of your important files.
  2. Turn off your Samsung Galaxy S6 Edge.
  3. Press and hold the Volume Up, Home and Power keys together.
  4. When the device powers on and displays ‘Power on logo’, release all keys and the Android icon will appear on the screen.
  5. Wait until the Android Recovery Screen appears after about 30 seconds.
  6. Using the Volume Down key, highlight the option, ‘wipe data/factory reset’ and press the Power key to select it.
  7. Press the Volume Down button again until the option Yes — delete all user data is highlighted and then press the Power key to select it.
  8. After the reset is complete, highlight ‘Reboot system now’ and hit the Power key to restart the phone.
  9. Set your phone up again and let it run for 24 hours. Be sure that you don’t install any app to know if the problem is gone.

Remember, if the phone continues bootloop or overheat when there are no apps, the cause is more likely hardware malfunction. That means it can be the battery or something in the motherboard. You should let a technician identify where the problem lies from here on out. If the device is still under warranty, let Samsung do the repair.

If your phone appears to work normally after a factory reset but resumes acting erratically after installing your apps, that means one of the installed apps is problematic. Uninstall third party apps until you’ve eliminated the cause.

Problem 3: Galaxy S6 edge screen is unresponsive

Samsung S6 edge keeps having the screen go unresponsive. It’s been doing this for days now and sometimes a force reboot works, other times even factory reset will do nothing. I’ve wiped my phone 3 times and the problem keeps coming back randomly. i’ve tried reseting cache and taking my SIM out and nothing works. Its software is up-to-date. it works for a few hours and then boom, nothing registers. I’ve never dropped it so i assume it must be a firmware issue, but no third party apps are installed except a VPN. Booting in safe mode has no result either. Now and then rebooting it works but only for a little bit. Thank you. I hope i included all relevent data. — Alex W

Solution: Hi Alex. We’ve already covered this issue countless times in our posts and if you’ve read some of them, you should know that Android troubleshooting is simple and not all issues are meant to be fixed in a user’s level. For example, your issue, based on how you describe it here, appears to be hardware-related. The most that you can do at your end is factory reset. If you’ve already tried observing how your phone works after a factory reset when there are no apps installed, then the problem is just beyond your ability to fix. Screen unresponsive problem can be a sign of deeper hardware issue, or a corrupted software. Usually, if it’s a software problem, it should get away after a factory reset. The unresponsiveness or random freezing issue may be a sign of bad storage device, failing processor, or a malfunctioning motherboard in general. There’s no way we’ll ever know what the real issue because hardware diagnostics require that we physically check the phone and know the complete history of the device. We’ve seen an issue like yours in older devices as internal storage devices eventually degrades in terms of performance over time. We know the S6 is not necessarily old but if you tend to be adventurous when it comes to software, that is, you tend to install a lot of apps, root the phone, or reflash the firmware, you’ll most likely encounter storage device failure sooner. Don’t take this as the real cause for your current problem though. We may be entirely mistaken as there are other factors that can come into play. In general though, if a factory won’t fix the issue, then there must be a significant hardware problem behind the trouble.

Problem 4: Galaxy S6 won’t charge, won’t turn on at all

I was charging my Galaxy S6 overnight. I woke up to find it stuck at the black and white Samsung logo screen/startup screen. Soft resetting did not work. It went back to the startup screen everytime. Could not access the recovery menu at all. Could only get to the ‘rom is install’ warning screen. Could not connect to the PC because battery was completely dead and could not charge. Phone does not charge via outlet or PC. It is completely dead at this point. Does not switch on at all anymore. Just a blank black screen (not even the black ‘back light ‘ appears anymore to show that it is attempting to switch on). Please help me. — Blane

Solution: Hi Blane. The only thing that you can do right now is to try a different known working charger and USB cable. There may be a problem with the current charger you’re using. If the phone remains dead or unresponsive, you’re out of luck. There may be a battery or hardware problem preventing the phone from booting up. Unless you have the tools and expertise to take your phone apart to replace the battery, you should consider sending the phone in. There are other hardware considerations so you want to let someone who does repair for a living take a look at the device.

 


Engage with us

If you are one of the users who encounters a problem with your device, let us know. We offer solutions for Android-related problems for free so if you have an issue with your Android device, simply fill in the short questionnaire in this link and we will try to publish our answers in the next posts. We cannot guarantee a quick response so if your issue is time sensitive, please find another way to resolve your problem.

If you find this post helpful, please help us by spreading the word to your friends. TheDroidGuy has social network presence as well so you may want to interact with our community in our Facebook and Google+ pages.