S21 random reboots and app crashes. Any tips on troubleshooting? - Samsung Galaxy S21 Questions

whenever the restart starts on the top left it gets hot.

Welcome to XDA.
Try booting into safe mode.

Did still same issue

Factory reset.
If that fails reflash to last known good firmware.
If that fails, it's likely a mobo failure.
The SOC is in the hot spot area...

Related

[Q] Anyone else experiencing Reboot with factory reset with 2.2?

I have a strange problem i am trying to track down, this ONLY started with 2.2 The hard part is that this doesnt happen everytime, sometimes when i reboot the streak it will either get stuck at the first dell screen and not boot further, or it will factory reset itself. Sometimes it will reboot on its own and do a factory reset. At first i thought it was the rom as i was using dj steve's, but then i loaded dell's 2.2 and am experiencing the same problem.
Before and after each install i have done the factory dell reset, and have also done the wipe data/wipe cache/wipe dalvik from clockwork, and i still yeild the same results.
Does anyone have any ideas on what the possible cause of this could be? I have seen talks of reboots, but no talks of chronic factory resets.
Check if it happens when you bump the phone flat against a table. If so it is the battery losing contact. I had the same problem (but without the factory reset) - fixed it by sticking a piece of paper under the battery. Hope this helps.
Sent from my Dell Streak using XDA App
unfortunately its not a battery issue. Most of the time, i initiate the reboot and when it boots back up it does a factory reset. I have only had it reboot itself twice with factory reset.
I'd be seeking a replacement asap
I had issues with my DS on the weekend after having it for only 1 day, but realised that SetCPU was giving it grief. After a full reset and without using SetCPU, no probs, up time is now 73hrs and counting
cheetah2k said:
I'd be seeking a replacement asap
I had issues with my DS on the weekend after having it for only 1 day, but realised that SetCPU was giving it grief. After a full reset and without using SetCPU, no probs, up time is now 73hrs and counting
Click to expand...
Click to collapse
Thats kinda what i was thinking, except this didnt happen until i started messing with 2.2. However i do realize this could be completely coincidental. I am planning on putting this back to factory 1.6 tonight and running that for a few days to see if i still have the same issue. Was mainly looking to see if anyone else had the same problem, otherwise i would say it seems to be an isolated incident!
Actually, I have noticed another issue with my DS. Sometimes when I turn off and turn back on, the button lights turn on, but no Dell logo. Just sits there until I pull the battery..
Doesnt happen all the time, but it is very strange.
cheetah2k said:
Actually, I have noticed another issue with my DS. Sometimes when I turn off and turn back on, the button lights turn on, but no Dell logo. Just sits there until I pull the battery..
Doesnt happen all the time, but it is very strange.
Click to expand...
Click to collapse
I had a similar issue related to this. Basically it would boot to the dell logo, but wouldnt boot to the dell animation. I could let it sit there for 10 minutes and hold down the camera button and still get to fastboot, or volume keys and get to recovery.. Im pretty sure my phone is F'd so im gonna send it back.

[Q] Shutting itself off?

Hey, running into a bit of an issue with my s2. I am running CM7.1, and it has only started fairly recently. Does not matter if I'm using the phone, it's sleeping (although less common) or even when it's booting, sometimes it'll just completely shut down, as if you just ripped the battery out of it. No warnings, anything. Sometimes after this happens, getting it to turn on again is tricky. Sometimes it'll let you press the power button, sometimes you have to remove the battery, and sometimes you even have to connect it to the charger.
I'm really not sure if this is a software or hardware issue. The fact it sometimes has problems restarting afterwards kind of points to hardware. Maybe my battery is dead and the protection circuitry is kicking in?
Anyone else have this issue/any ideas?
Cheers,
Dan
Try going back to stock firmware & see if you can reproduce the problem.
how long do u have ur phone? and are u using stock battery?
i would try another battery at first
otherwise like said before go back to stock or reflash cm7 with full wipe

[Q] Hard to explain rebooting issue

So, my Atrix is doing something quite strange, and possibly unique.
Just about every 5 to 10 minutes, my phone will randomly reboot. This seems like something a forum search would fix. But it gets significantly more... weird...
More than half the time, it will come up to the Motorola logo, and just sit there... doing nothing. No errors, no messages, no nothing. Just logo. Pull battery, repeat. Sometimes it boots, mostly, it just does it again. Motorola logo. Big. Red. Cylon-like.
However, sometimes it seems that if I give the body of the phone a bit of a twist, flex it a little bit, SOMETIMES, this will prompt it to boot. I tried the because I have had to do this twist and flex trick to get the USB port to connect and charge for some weeks now.
If I can get it to boot, it will sometimes boot normally. Run for a while. And then I lock the screen. Sometimes, the lock button will wake it up like normal. More often though, it shows no response. I attempted to press the button while doing the same twist and flex trick, and this occasionally works. It will unlock the screen, and I can keep going. But usually, it just decided to reboot, and back to that darn Motorola logo.
I thought maybe because I was running JokerSax CM9 beta, it was a rom issue. So back to CM7 I went. No dice. Same thing. I kept a Nandroid backup of the stock ROM even, so I rolled back to that. Again, no change. Same results.
Some inconsistent symptoms are that sometimes when it boots up, the wifi will not come on. Other times it dose fine.
And one time, just one single time, it gave me a "Could not connect to modem" error on that red Motorola logo screen. I haven't gotten it to do that again.
So, is this a Radio issue? A ROM issue? Or has my logic board gone kaput? I am at a loss. I ordered a shattered Atrix from ebay for a logic board swap in case that would fix it, but it won't be here for another week. If anyone has some alternate ideas, I am open to suggestions!
does your wifi work properly when the phone is functioning?
How warm does the phone feel? Almost sounds like an overheating issue.
dLo GSR said:
does your wifi work properly when the phone is functioning?
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Click to collapse
Sometimes it works, sometimes not. Its really pretty random.
xcguy said:
How warm does the phone feel? Almost sounds like an overheating issue.
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Click to collapse
The phone gets quite warm once it starts having its fits. I usually pull the battery to let it cool down before trying again. I was running an overclocked kernel, but have since flashed back to a normal 1ghz kernel. It seems to get hot only when it is trying to boot. It only started doing this recently though. I never had an overheating problem before.
Reboot into recover and flush both cache and dalvik-cache.
Still sounds like an overheating issue...
xcguy said:
Reboot into recover and flush both cache and dalvik-cache.
Still sounds like an overheating issue...
Click to expand...
Click to collapse
Tried that already...

Motorola RAZRi XT890 broken - strange issue

Hello,
My RAZRi turns on, but is unable to access the phone. I have been researching this problem and there doesn't seem to be any solutions, this problem seems very weird.
So recently my phone has just been restarting itself, absolutely no idea why but it only happened rarely (probably should have done something immediately when this started to occur, -sigh-). The issue begun to grow more severe, as the RAZRi was restarting itself more frequently and was becoming a nuisance as I may have been doing something at the time.
I had a theory that the problem may have been something to do with the battery. There was a couple of occasions where I would be charging my phone and I would remove the connector to then notice that the phone resets a couple of seconds later. The problem was getting more serious.
The phone has now entered a stage where I can't even access the phone. By which I mean it keeps resetting itself on the boot-up process, in fact this is happening as I speak. I have been unable to access my phone for the last 2 days and this is really strange. I tried booting in to safe mode to perform a hard reset but I literally can't do that as the phone just keeps resetting itself.
What the hell should I do!?
Thanks,
James.
JamesBarrett said:
Hello,
My RAZRi turns on, but is unable to access the phone. I have been researching this problem and there doesn't seem to be any solutions, this problem seems very weird.
So recently my phone has just been restarting itself, absolutely no idea why but it only happened rarely (probably should have done something immediately when this started to occur, -sigh-). The issue begun to grow more severe, as the RAZRi was restarting itself more frequently and was becoming a nuisance as I may have been doing something at the time.
I had a theory that the problem may have been something to do with the battery. There was a couple of occasions where I would be charging my phone and I would remove the connector to then notice that the phone resets a couple of seconds later. The problem was getting more serious.
The phone has now entered a stage where I can't even access the phone. By which I mean it keeps resetting itself on the boot-up process, in fact this is happening as I speak. I have been unable to access my phone for the last 2 days and this is really strange. I tried booting in to safe mode to perform a hard reset but I literally can't do that as the phone just keeps resetting itself.
What the hell should I do!?
Thanks,
James.
Click to expand...
Click to collapse
That's certainly not good. :/ Is it able to stay on at all, like if you boot into recovery? If it won't stay on in any mode (fastboot/recovery/OS) then without trying a new battery first, there won't be much else to try. If it's rebooting itself that quickly, in any bootable mode, then there won't be much else to do because if you try to SBF the original software back and the phone reboots in the middle of flashing, that could be a surefire recipe for an unrecoverable brick. I haven't worked on an i before, but for most Razrs the batteries aren't THAT hard to access. Generally it involves a couple of Torx screwdrivers, removing the 2 bottom screws, sliding off the back, and undoing some of the screws around the outer shell to give access to the battery terminal. I'm sure there are a few guides lying around either here, droidforums, or just YouTube.

Keep getting QUALCOMM CrashDump Mode randomly after doing a reset on a ROM

I keep getting a black screen saying QUALCOMM CrashDump Mode followed by some numbering about a kernel then followed by
subsys_err_fatal_intr_handlersubsys-restart: Resetting the SoC - adsp crashed.
subsys_unregister.
When I hold the power to restart the phone, it's fine. I don't think it's a hardware issue because this began after I did a reset from TWRP. I had had a custom ROM ([AOSP] PixelExperience for OnePlus Nord N10 5G [UNOFFICIAL][BILLIE]) on my phone for about an year without an issue then I got locked out due to it not recognizing my pattern and wanting the pattern instead of fingerprint. I deleted locksettings.db from the system as suggested after which the system booted but just kept spinning saying "Android Is Starting" a which point I did the reset after which this issue started.
As I'm 100% sure that it's software related rather than hardware related, I'm looking for any suggestions to go about getting rid of this error. I also noticed it tends to happen when the phone is charging more.
Btw the strange thing is that this happens when the battery is somewhere around 65 or 66% I think. Like if I have it on a charger, when it's about to get to around that percentage, it will crash. And if I'm not charging it and it goes from say 70something percent down towards 65ish, it'll crash.

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