I've had my SM-T810 (Tab S2 9.7, wifi) for four or five years now. A year ago, half of the screen began flashing brightly if I tried to use it on low brightness. To solve this, I turned up the brightness a bit and used the app Darker.
Over the last few weeks, things got much much worse. The tablet required more and more brightness to avoid flashing, it would stutter when playing videos, and responsiveness was slow. Every so often it would lose WiFi connection when my other devices didn't have trouble connecting.
Today, there has been some type of catastrophic failure. I was watching a video, when suddenly the video stuttered, froze, and the tablet became completely unresponsive. None of the buttons worked at all. It would not turn off. After about 15 minutes, the screen began its old flashing routine...and then something new happened: the flickering was joined by colorful lines, and about five minutes later the tablet shut itself off. It had become quite warm around the volume rocker/card slot area.I can't turn it back on, but if I plug it in, it shows the battery percentage. The tablet has never gotten wet, and it hasn't been dropped recently. Any thoughts? Thanks in advance!
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Is the battery indicator dimmer than normal? Normally I would just assume at least the screen is bad, but since the charging indicator seems to work? Perhaps you should try download mode? Odin over fresh firmware? (You will lose data on the tablet though)
No, the battery indicator doesn't seem dim. I'll have to try your suggestions. I'm starting to think the motherboard is bad, and that would help me determine if it is or not.
OhioYJ said:
Is the battery indicator dimmer than normal? Normally I would just assume at least the screen is bad, but since the charging indicator seems to work? Perhaps you should try download mode? Odin over fresh firmware? (You will lose data on the tablet though)
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Click to collapse
Maybe some files in EMMC corrupted? Then if ODIN works it might get it back to life.
Related
Is this graph normal?
Firmware:V20o Stock.
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well... I think is "normal" is it got stuck at boot or restarted itself... that "normally" happen when flashing another rom: you have a #% when doing TitBu and those stuff then you flash a rom and when finally bootup you got [usually] -#% and since it was from boot to boot it can't get the correct graph... or at least thats what I think
not normal i think... i've seen thing like this once - with older version of Zeus (don't remember which one exactly). When i had SoD, after i remove battery (warmer than usual) and put it back, the graph was similiar.
its either a self boot or an sod.... ive experienced alot of these myself =P.... the screen goes black then when you press the power button repeatedly goes very bright then it reboots then the battery chart gets cut off like that.....
for my part i think its mostly cos i install and uninstall alot of apps (even those that are not supposed to work for our ob) so im pretty sure its not a rom problem cos i dont see anyone else talking about it....
i posted sometime back on another thread abt my phone always losing 3g and rebooting itself (after what seems like the 3g hangs) but that problem, (although not for its intended purpose) has been solved for me by using the FD off patch that Huexx posted for his rom.
it could also be (im guessing here) due to not clearing old data (ie battery charge levels) after flashing a different rom... i read somewhere that someone has an almost similar problem coming from froyo to custom rom. something about the battery charge remembers the charge and discharge levels from the prev rom and cannot charge/ discharge properly with the new rom causing the erratic power levels.... its something like... in your picture, shows that it rebooted at 90% and went to abt 80% cos in actual fact you have used your battery to 80% just that the system failed to update this in the background hence it forced itself to reboot to get the proper reading again... again for this last part im really guessing....
by the way my phone has not any problem sod fc or restarting etc. everything is normal except battery graph.
Ever since I rooted and installed custom roms on my device, the phone would sometimes have a black screen and become unresponsive. The only way to use it is to perform a reset by pressing volume down + power button.
When I go to have a look at the battery history, it shows a gap in the time the phone was non responsive, suggesting it was turned off. However, the battery level also is much less and you can see a downward slope in the battery chart. I have attached a screenshot of the battery chart.
Because of this problem, I reflashed stock Rom and also Sky high kernel to solve deep sleep problem. But I still am getting the sleep of death.
I noticed it tends to come after I use the GPS (Google Maps).
Current config:
Stock rom
Sky high kernal
Twrp
Any help is much appreciated.
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Sent from my SM-N920I using Tapatalk
ptflyer said:
Ever since I rooted and installed custom roms on my device, the phone would sometimes have a black screen and become unresponsive. The only way to use it is to perform a reset by pressing volume down + power button.
When I go to have a look at the battery history, it shows a gap in the time the phone was non responsive, suggesting it was turned off. However, the battery level also is much less and you can see a downward slope in the battery chart. I have attached a screenshot of the battery chart.
Because of this problem, I reflashed stock Rom and also Sky high kernel to solve deep sleep problem. But I still am getting the sleep of death.
I noticed it tends to come after I use the GPS (Google Maps).
Current config:
Stock rom
Sky high kernal
Twrp
Any help is much appreciated.
Sent from my SM-N920I using Tapatalk
Click to expand...
Click to collapse
You can try another kernel.
hello everyone, here is my problem - in last couple of week i'm having really big battery problems (to the point i'm thinking of smashing my phone to the ground ) I take my P9 of the charger and it says it is at 100%, after only few min it drops to about 90%, and when i open some app (facebook atc) it freezes and when i try to turn it on again it says 0% battery!! when i hook it up on charger it takes 20 mins to charge to 1%, and when i turn it on again it says anywhere between 40% and 100%!!! Freezing most commonly appears when i turn on my camera and take a picture, it snaps then freezes. Tried with the factory reset it didn't help.
Please anybody!!!
Most likely the battery has worn out. Is it still under warranty?
Same here, sometimes camera apps freeze and then i will reboot it. After reboot, phone shows 5% power and then force itself into shutdown. The battery actually may not empty as told by phone, when i start charging, it shows more than 5% and phone actually have juice to run longer.
@suby2212 and @ongco
Sounds like a battery replacement to me. Have to tried installing AccuBattery or anything similar to check the battery health?
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It's not the battery causing this fault
3m2vinatohr04 said:
@suby2212 and @ongco
Sounds like a battery replacement to me. Have to tried installing AccuBattery or anything similar to check the battery health?
I have replaced the battery in my P9 and it still gets a power drain when the camera is operated. This usually occurs in low light environments. If I immediately turn the phone back on it starts up with maybe 20% battery, which then drops 1% a second and gets hot. This is with a brand new battery fitted. I conclude there is a glitch with updated software. Hopefully Huawei will read these posts and correct with future updates.
Click to expand...
Click to collapse
Not the battery
Try removing your sd memory card. I think a malfunctioning sd card was causing issue of battery drain during camera use. I can't explain the full science behind this, but my p9 phone has been fine since I removed the sd
Hi guys, I have the following problem. My phone keeps turning off at random times. Today it happened more then 5 times. The problem started about a month ago. The phone started turning off at random times. So I did a factory reset with complete data wipe and it didn't help. So then I disabled Google services like Chrome, Disk, Gmail etc., Cleaned the chache as well. So this stopped the problem for a while. The I decided to turn back the services one by one to see if it works and it did work alright for a week or so. But since yesterday the problem got worse. I disabled the services one again but the problem stays. I should point out that about 6 months ago I send the phone for a battery change and it was done in official OnePlus service center with OEM part. So the battery should be fine. What I noticed is a huge battery drain on the phone while is turnes off. I attach screens showing the drain and that it had about 1,5 hours of screen on time. There is barely any app on the phone. I use Edge instead of Chrome, I have Viber plus three or four other apps to try keep it simple. Can you help me with that issue?
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Just wow. I have exactly the same problem. I also changed the battery 6 months ago like you did but myself with eBay battery. I was thinking it has something to do with the battery cable not connecting properly but the battery was changed 6 months ago and the problem started 1 month ago like yours. The eBay seller is sending me a free replacement to see if it works. I also tried formating ,wiping cache etc but nothing worked. I have no issues with battery drain at all though. The new battery works fine. Sometimes I notice a little overheat that I have never seen before in the 3 years I use as a daily driver. Also sometimes when it powers off, the only way to power it on is by plugging the charger.
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I have no idea why this is happening. It's been 2 weeks since I purchased the phone. The screen time is showing 1hr 23mins but the phone was idle at night. Is there a fix for this issue?
Dr. Vegapunk said:
View attachment 5621383
I have no idea why this is happening. It's been 2 weeks since I purchased the phone. The screen time is showing 1hr 23mins but the phone was idle at night. Is there a fix for this issue?
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Click to collapse
Something is keeping your phone from deep sleeping. When the display is off it can be in one of two states, one is the phone is still on, CPU is running but the screen is blanked out, this lets apps continue to work, for example sending an email you've just sent then turned off the phone. Then after a little bit more time the phone goes into deep sleep, this sees everything frozen so nothing is running and the CPU is off. It should be in this deep slate state most of the time you are not using the phone. What can happen is applications take a wake lock, and stop the phone from going to deep sleep, and over many hours that really drains the battery.
Restart the phone and see if it is now okay. Consider what applications you have installed recently that might be causing the issue.
PhilipL2021 said:
Something is keeping your phone from deep sleeping. When the display is off it can be in one of two states, one is the phone is still on, CPU is running but the screen is blanked out, this lets apps continue to work, for example sending an email you've just sent then turned off the phone. Then after a little bit more time the phone goes into deep sleep, this sees everything frozen so nothing is running and the CPU is off. It should be in this deep slate state most of the time you are not using the phone. What can happen is applications take a wake lock, and stop the phone from going to deep sleep, and over many hours that really drains the battery.
Restart the phone and see if it is now okay. Consider what applications you have installed recently that might be causing the issue.
Click to expand...
Click to collapse
I will give this a try and update