Oneplus 8T shutting down by itself [Unresolved, refunded] - OnePlus 8T Questions & Answers

New phone arrived last night and was working before I went to bed, but I couldn't turn on the screen in the morning. I thought the battery was drained but after holding power button it started booting back up with 96% battery left.
Then it happened again at lunchtime, phone was off with no warning/reason. I have done very little to the device, so far it's only restored apps from a google cloud backup during Setup. Have not opened any apps yet other than 1 or 2.
a few hours ago I ran a factory reset and set up the phone again, logged in google account and did not restore any backups. I left the phone alone for a while and picked it up just now to find it has shut off.
Anything else I can try or do I have a defective device?

The phone has the ability to shut itself off on a schedule...I use it to turn it on in the morning, and to shut it down at night...saves the wear and tear on the power button. Make sure you don't have this feature turned on somehow...

jaseman said:
The phone has the ability to shut itself off on a schedule...I use it to turn it on in the morning, and to shut it down at night...saves the wear and tear on the power button. Make sure you don't have this feature turned on somehow...
Click to expand...
Click to collapse
Just checked, its not on. Never enabled it

It even shuts down during the country selection screen on OnePlus setup after a factory reset, no sim cards in. Doesn't seem right, will be refunding it back to the store.
Marking thread as unresolved.

I used to have same problem with my OnePlus 5. Turned out to be a faulty battery. New Battery solved the problem.

Related

[Q] HTC Titan reset itself

Yesterday I attempted to use my HTC Titan and it was powered off, or so it appeared. I had used it less than ten minutes before. When I pushed the power button it would not turn on. I pulled the battery and was able to turn it on. It went to the Windows Phone screen and sat there for several minutes. I pulled the battery again and it again sat at the Windows Phone screen for a long time. It finally came up and appeared to have been reset to factory settings. I had to enter my Windows Live ID and go through all of the usual intial setup. Once that was complete all of my apps were still installed and the live tiles were still present. All of my settings were back to defaults and I had to re-enter all of the passwords for my accounts. All of the Carrier and Manufacturer installed apps had been reinstalled. It seems to be functioning normally now. Has anyone else experienced this?
Ask in the titan section. I've seen reports of it restarting and issues if you phone is almost full but not a full hardware reset.

Stock and unrooted but acting weird

I was using an app on Sunday, when the app froze completely and the screen of the s3 went black. The only thing I could see was the status bar up top, but even that was unresponsive. So I pulled the battery and turned it back on, and it was acting extremely slow so I got impatient and started trying to get into settings, when it went unresponsive again.
This time I held down the power button to see if I could get it to respond and the lock screen came up, without my wallpaper and instead of Verizon Wireless at the top, it said "No Service". After a couple of seconds my wallpaper showed up and then it said Verizon Wireless. After I get through the lock screen, I would go through the same whole routine - e.g. try and get into settings, freeze, hold power, have it come back up, etc. So I battery pulled again.
Finally, I got it to boot OK, by just letting it be for 10 minutes and completely ignoring it.
However, today my battery drain was pretty fast, it was on for 12 hours and was down to 40% after only 30 minutes of screen time. The culprit was "Android System" at 61%, i've never seen this that high before. Because of the high "Android System" power usage, I thought it might be good to power it down. Upon boot up, I assumed I'd be able to use it immediately, so I started going into Settings, and yet again it went unresponsive.
Are the two issues unrelated? What should I do?
As a warning, I'm extremely new to anything smarter than a Nokia brick, so be patient - Thanks!
As inconvenient as it is, I would recommend a full system wipe and go back to out of the box. That seems to fix everything and unfortunately it is rather difficult to diagnose issues on phones, especially unrooted.
In order to do a wipe you can do one of two things, goto settings then backup and reset, then hit factory data reset.
-OR-
Turn off the phone. When you start it again hold volume-up, power, and home to get into recovery. Then do the factory reset.
Ok, I thought that's what my option was. Thanks dwibbles.

[Q] Need expert openion, if its Hardware or Software problem

I got a used HTC sensation XE with audio beats, with WiFi not working (GB was installed). Wifi & Teathering services always remained on "Error" when wifi turned on. Bluetooth, SIM services all were doing good. Used it in this condition for 2~ days, all went fine exept I once found it powered off while it was on wall charging.
Then I upgraded it to ICS downloading Stock ICS ROM from this thread. Which was isntalled successfully and the WiFi started to work.
It worked fine for 2 days, except my phone restarted on its own once or twice. At that moment i was using 340 MB of internal storage for apps and 750 was free. One night i was playing "Cut the Rope" and my phone prolonged a game sound and turned off, I removed battery and replaced it and turned on, but nothing happened, it remained off. Attached it to charging but no response. I left it there and after about an hour charging light turned on and it powered on.
From that moment, Phone often shows message "Low Storage Space", Hangs and then turns off. And fails to turn on again, sometimes for 24 hours. I did a "Factory Restore" from boot loader (power + voluem dwn), but its still behaving same.
Lattest: It turns on by pressing power button for 20 to 30 sec. Sometime goes upto lock screen and turns off, sometimes turns off on first screen and most of the times dies at audio-beats screen (after or before change is screen brightness). Remains dead for some time then again to same position.
Any expert openion/ experiance/ etc....
I don't have option of replacement. What to do? :crying:
khaled_j_k said:
From that moment, Phone often shows message "Low Storage Space", Hangs and then turns off. And fails to turn on again, sometimes for 24 hours. I did a "Factory Restore" from boot loader (power + voluem dwn), but its still behaving same.
Lattest: It turns on by pressing power button for 20 to 30 sec. Sometime goes upto lock screen and turns off, sometimes turns off on first screen and most of the times dies at audio-beats screen (after or before change is screen brightness). Remains dead for some time then again to same position.
Any expert openion/ experiance/ etc....
I don't have option of replacement. What to do? :crying:
Click to expand...
Click to collapse
But it never turns off just sitting at the bootloader or fastboot screen? Doesn't turn off while doing a factory reset? Only when trying to load software and activate hardware booting into the OS?
MS Gray Man said:
But it never turns off just sitting at the bootloader or fastboot screen? Doesn't turn off while doing a factory reset? Only when trying to load software and activate hardware booting into the OS?
Click to expand...
Click to collapse
Yes it didn't turned off sitting idle in bootloader. But it completed its factory reset in 3 restarts; 1st right after loading stock, 2nd configuring apps 10/36 and 3rd at 23/36. Then 4th time it died on fresh Lock Screen.
NOTE: I removed SIM, SD Card in the very beggining of the problem.
khaled_j_k said:
Yes it didn't turned off sitting idle in bootloader. But it completed its factory reset in 3 restarts; 1st right after loading stock, 2nd configuring apps 10/36 and 3rd at 23/36. Then 4th time it died on fresh Lock Screen.
NOTE: I removed SIM, SD Card in the very beggining of the problem.
Click to expand...
Click to collapse
I would try replacing the battery... it's about all that's left as it appears your phone is locked and more or less all stock..
Cuts down your options for things. Any sign of moisture exposure?
MS Gray Man said:
I would try replacing the battery... it's about all that's left as it appears your phone is locked and more or less all stock..
Cuts down your options for things. Any sign of moisture exposure?
Click to expand...
Click to collapse
Haven't tried out any other battery, I tested it on voltage meter and it showed ok, BUT you have got a point; I must check it with some other battery of working phone.
Moisture:: Well there was Mist/ Fog a few days back but mostly I stayed at warm place + I kept it in fromt of fan heater after ealry episodes..

u12+ black screen after PIN unlock / Device unusable

Hi everyone, I'm throwing this out there because I've run out of ideas about what has just happened to my U12+ (64gb) today.
I woke up and used my phone as normal, caught up on Twitter and the news, the usual apps etc. nothing untoward. The same routine I've had with my phone for the past 18 months of owning it with zero issues. My handset is stock OS (Android 9) and so not rooted or anything like that. Virtually all the apps I use are standard issue from the Play Store, nothing really "out there" and I have BitDefender installed to look after security. Same setup I've had for over a year. The battery was around 35% so I plugged it into my wall charger while I went off to grab some breakfast. When I returned a couple of hours later the light on the handset was green, I unplugged the charger and attempted to unlock it with my fingerprint.
The phone asked for my PIN, no big deal so I entered it. Black screen. Tapped the power button again, it requested my PIN again, I entered and... black screen. Okay, I was a little bit concerned now. I held down the power button so the haptic buzz occurred, held for 10/20/30 seconds, a minute... nothing, no restart. Tap the power button and it asks me for my PIN again and shows yet another black screen. I held down Power + Volume Down but again, nothing and no restart.
I asked someone to call me, the screen came to life and I could take the call but each time I tried to pull down the system tray in order to try and reach Settings to restart it asked me for my PIN, I entered it = black screen. The call was unaffected.
I removed my SIM + microSD card tray = same deal as above.
The phone is clearly responsive in some way and the screen does display to ask for my PIN but I can't get into it in order to reboot it. Extremely worrying.
Does anyone have any advice? At the moment I am faced with the prospect of simply allowing the battery to run out so the phone shuts down naturally but that is going to take the best part of 2 days.
I'm really disappointed because I was planning another 1-2 years use for this handset as I just bought a 1TB microSD card which has been fine in the phone for weeks so I don't think that's the cause. It is also genuine SanDisk.
Any suggestions or advice? Thanks in advance.
Hello, I hope you have made a backup with google backup recently... This does not happen often on android, but sometimes the system could have a problem. You can try this go the bootloader with the power and volume buttons , after recovery.. after apply a wipe data/ factory reset.. is will make a factory reset of your phone except the sd card. You should by fine after that and profit again.
Thanks, I appreciate your reply.
At the moment I am running the battery down until the handset switches off naturally. When it comes back on I will try to launch the phone normally, if that doesn't work I'll run the battery down again and attempt to reach the bootloader.
My photos are backed up to the cloud, I may lose some text messages but I managed to transfer the majority of my 2FA over to another Android device bar one.
At the end of the day if it's a choice between wiping it or a bricked/unusable handset then I don't really have one. What a pain.
Magimix^ said:
Thanks, I appreciate your reply.
At the moment I am running the battery down until the handset switches off naturally. When it comes back on I will try to launch the phone normally, if that doesn't work I'll run the battery down again and attempt to reach the bootloader.
My photos are backed up to the cloud, I may lose some text messages but I managed to transfer the majority of my 2FA over to another Android device bar one.
At the end of the day if it's a choice between wiping it or a bricked/unusable handset then I don't really have one. What a pain.
Click to expand...
Click to collapse
At the moment I am running the battery down until the handset switches off naturally <----- why that??? Even on a bootloop or a black screen you can reset it hold the buttons power and the volume, you can go on the bootloader.
Max128 said:
At the moment I am running the battery down until the handset switches off naturally <----- why that??? Even on a bootloop or a black screen you can reset it hold the buttons power and the volume, you can go on the bootloader.
Click to expand...
Click to collapse
The first thing I tried to do was hold down the power button or the power button in tandem with the volume buttons but the handset won't restart. I tried loads of times holding it for different amounts of time and... nothing.
Trust me, I tried.
The only way I can get the device to switch off is by draining the battery. I'm almost at 20% so it shouldn't be too much longer.
Well I already got a black screen after flashing a module magisk.. I have holding the power button and the phone have restart no problem, same thing on bootloop. You need to be sure to hold the button correctly.
Max128 said:
You need to be sure to hold the button correctly.
Click to expand...
Click to collapse
Yeah, I'm certain I was holding the buttons correctly. I tried about 20 times using different combinations just to be sure but the device would not restart. The haptic shock buttons are one of my least favourite features of the u12+, it's got to be said.
Anyway, the phone ran out of battery about 15 minutes ago. I left it alone for few minutes and switched it back on. It allowed me back in and the device appears to be fully functional again. I can unlock by thumb print, face or PIN without issue.
Basically, it's fixed. My only concern is I have no idea what caused it or if it will happen again.
Thanks for offering help though, I appreciate it. I'm not sure if this thread can be closed/locked now? I'll look into that.
Cheers.
Yes.. i love the buttons too i never got a problem with this. Great if is fixed! Maybe make a factory reset the next time.
I am wondering if the new flagship have haptic buttons too.. htc will announce it Tuesday.

Pattern lock suddenly not recognized (bug)?

Samsung A21 keeps saying that I'm using the wrong pattern.
Steps taken to try and resolve:
Samsung account, find my mobile or whatever it's called. I was able to log in and see the location of the phone but when I tried to unlock, it said that remote unlock was not turned on, on the phone.
Google account: Said "notification sent" and that was it, nothing more.
Last thing I want but would do is a factory reset. Problem is, it asks for the pattern to shut down the phone.
Was going to pull the battery to shut it down, but the back is glued on and I don't want to damage the case even slightly. It's my mothers phone. If it was mine, I'd take the chance.
I'm at a freaking loss and can't believe this bug exists to this day.
Edit: I've set it to the download mode screen (the screen stays on and will drain the battery) and will let the battery die. I think, once dead, I should be able to plug in and quickly hold the buttons and get into recovery mode and reset it. Yes no maybe?
yes you can reset the phone
but you can not save the data

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