Nexus 9 fc and soft reboots when battery is under 60% - Nexus 9 Q&A, Help & Troubleshooting

Hi there guys,i brought a N9 very cheap and he was told me that the device was fc a lot.
Anyway i noticed that,when is fully charged it works great,but when the battery drops below 60%,then it starting to reboot,softreboot,system apps keep fc and i cant use it.
Is this a problem from the battery or the mainboard?!
I tried the solution to disconnect the battery and reconnect it but nothing happenend.

drake19 said:
Hi there guys,i brought a N9 very cheap and he was told me that the device was fc a lot.
Anyway i noticed that,when is fully charged it works great,but when the battery drops below 60%,then it starting to reboot,softreboot,system apps keep fc and i cant use it.
Is this a problem from the battery or the mainboard?!
I tried the solution to disconnect the battery and reconnect it but nothing happenend.
Click to expand...
Click to collapse
Have you tried to re flash the stock firmware image? I have noticed a few people have replaced the battery and it solved many problems.

madbat99 said:
Have you tried to re flash the stock firmware image? I have noticed a few people have replaced the battery and it solved many problems.
Click to expand...
Click to collapse
Yeah,i have flash it a lot of times.
I want to replace the battery to test it,but i cant find anywhere.

drake19 said:
Yeah,i have flash it a lot of times.
I want to replace the battery to test it,but i cant find anywhere.
Click to expand...
Click to collapse
Cameron sino 6700mAh Li-Polymer Battery For Google Nexus 9, 0P82100, Nexus 9 TD-LTE, Nexus 9 WiFi, fits Google 35H00218-00M, B0P82100 https://www.amazon.com/dp/B06XS2XQNQ/ref=cm_sw_r_cp_apa_vuq4zb0X0ABC3

madbat99 said:
Cameron sino 6700mAh Li-Polymer Battery For Google Nexus 9, 0P82100, Nexus 9 TD-LTE, Nexus 9 WiFi, fits Google 35H00218-00M, B0P82100 https://www.amazon.com/dp/B06XS2XQNQ/ref=cm_sw_r_cp_apa_vuq4zb0X0ABC3
Click to expand...
Click to collapse
Sorry i didnt explain it,i cant find in amazon uk,or ebay.co.uk to send it from europe,i live in greece and we have problem with the customs here,if i order something out of EU they will charge me +22€,plus from hong kong i will have her in 4 weeks+
Thank you for the link anyway

drake19 said:
Sorry i didnt explain it,i cant find in amazon uk,or ebay.co.uk to send it from europe,i live in greece and we have problem with the customs here,if i order something out of EU they will charge me +22€,plus from hong kong i will have her in 4 weeks+
Thank you for the link anyway
Click to expand...
Click to collapse
Oh sorry. Just trying to be helpful. Hopefully you can find one closer to you.

madbat99 said:
Oh sorry. Just trying to be helpful. Hopefully you can find one closer to you.
Click to expand...
Click to collapse
I know that and thank you so much for the help

I have changed the battery,but still i have the same problem.
Any advice anyone guys!?!?

I just noticed something,i fastboot format system and after that i fastboot flash system and nothing was force closing,after one reboot,the hell came!!!
I did the same again and everything was ok.
Does anyone have any idea about this?!

On the page below, they reference a remedy solution that was efficient for a long time
https://productforums.google.com/forum/#!topic/nexus/MP7ODWyR62Y
They've just unplugged the battery for some seconds and reconnected it. This action, forced M/B to hard reset. You can try that. Somewhere on the page there are instruction from ifixit. Just unplug the battery.

gtsip said:
On the page below, they reference a remedy solution that was efficient for a long time
https://productforums.google.com/forum/#!topic/nexus/MP7ODWyR62Y
They've just unplugged the battery for some seconds and reconnected it. This action, forced M/B to hard reset. You can try that. Somewhere on the page there are instruction from ifixit. Just unplug the battery.
Click to expand...
Click to collapse
He actually changed the battery

Hi I have similar issue. When my battery is low, my tablet very often is stuck (White screen and squeak voice).
Im on slimrom + fire ICE kernel
Try go to developers options>background proccess limit>set 0 instead of normal limit

=xom= said:
Hi I have similar issue. When my battery is low, my tablet very often is stuck (White screen and squeak voice).
Im on slimrom + fire ICE kernel
Try go to developers options>background proccess limit>set 0 instead of normal limit
Click to expand...
Click to collapse
For most, unplugging and re plugging the battery will fix it.

Related

[Q] After goodbye didn't wake up :confused:

hi everyone
I updated my lumia 920 to portico and everything good just one thing that's if my battery goes empty and my phone says goodbye I connect the wire charger but the phone didn't wake up and take one hour to start and the battery percent was 6%
please help me
sorry for bad English :crying:
If ur battery goes down, then it is perfectly normal that u have to charge it for a while untill u can power it on again. This is the case both with iPhones and Android devices. This way the battery is protected from emptying, since then, it would be needed 4 the battery to get replaced, which on Lumia920 isn't an easy process. Heck, I don't think it can be done at home, maybe if some1 is skilled enuff.
thanks for u
but when I rolled the software back to (1232.2109.1242.1002) the problem disappear
and if I updated to (1232.5951.1249.1002) it's came back
where's the problem
mohageer said:
thanks for u
but when I rolled the software back to (1232.2109.1242.1002) the problem disappear
and if I updated to (1232.5951.1249.1002) it's came back
where's the problem
Click to expand...
Click to collapse
You just answered your own question. If it is there with one ROM but not the other then the problem is obviously the ROM is not compatible with your hardware. You also should not be flashing ROMS with less than 50% of your battery remaining. This is just to keep the risk of loosing power in midflash down.
Solarenemy68 said:
You just answered your own question. If it is there with one ROM but not the other then the problem is obviously the ROM is not compatible with your hardware. You also should not be flashing ROMS with less than 50% of your battery remaining. This is just to keep the risk of loosing power in midflash down.
Click to expand...
Click to collapse
no I tried to flash many ROM with different product code (059r0j3 my won) but the problem still found .... I think the problem with portico and my hardware

[Q] Help Me Please, Urgent!

Hi, i was hoping you to help me. My phone is getting crazy.. I had a custom rom, the cm11 weekly build, and then i started having troubles with random reboots. Suddenly, my phone with 100% battery powers off and stays that way until i noticed that, then i power on and i have 1% battery and it turns it off. I thought it was a OS problem, so i installed the stock rom to see if it would solve, but turns out that when i'm around 60% battery it reboots again and again, and there's a flicker on the screen. I tried to root and flash another rom, i tried to keep it off for a few days, i tried to drain the battery as fast as i could but it doesn't solve it. So i'm thinking if it could be a battery issue, maybe it's kinda dead.. What do i do? do i buy a new battery or maybe it's another issue? Had anyone had a similar problem? Would it be possible that the companies on purpose make the phone to get crazy after a couple years as a strategy to sell more? Sorry for my bad english, and thanks in advance for your help.
Leandrorv.21 said:
Hi, i was hoping you to help me. My phone is getting crazy.. I had a custom rom, the cm11 weekly build, and then i started having troubles with random reboots. Suddenly, my phone with 100% battery powers off and stays that way until i noticed that, then i power on and i have 1% battery and it turns it off. I thought it was a OS problem, so i installed the stock rom to see if it would solve, but turns out that when i'm around 60% battery it reboots again and again, and there's a flicker on the screen. I tried to root and flash another rom, i tried to keep it off for a few days, i tried to drain the battery as fast as i could but it doesn't solve it. So i'm thinking if it could be a battery issue, maybe it's kinda dead.. What do i do? do i buy a new battery or maybe it's another issue? Had anyone had a similar problem? Would it be possible that the companies on purpose make the phone to get crazy after a couple years as a strategy to sell more? Sorry for my bad english, and thanks in advance for your help.
Click to expand...
Click to collapse
doesn't hurt to try a new battery, they cost around 10 dollars, and no, phone companies don't do that as a strategy to make you buy a new phone. They stop officially updating your phone to make you buy a new one.
LaosPerson said:
doesn't hurt to try a new battery, they cost around 10 dollars, and no, phone companies don't do that as a strategy to make you buy a new phone. They stop officially updating your phone to make you buy a new one.
Click to expand...
Click to collapse
Thanks. i check my battery and it turns out to be swollen. if i change the battery, would it be solved?
Leandrorv.21 said:
Thanks. i check my battery and it turns out to be swollen. if i change the battery, would it be solved?
Click to expand...
Click to collapse
It should be if you say it dies out of nowhere at 60 percent. I remember i dropped my note once and i thought i broke the whole thing, turns out i just broke the battery, scared me cause i thought i would have to get a new phone
LaosPerson said:
It should be if you say it dies out of nowhere at 60 percent. I remember i dropped my note once and i thought i broke the whole thing, turns out i just broke the battery, scared me cause i thought i would have to get a new phone
Click to expand...
Click to collapse
Exactly, i was scared because where i'm from (Argentina) the phones are just impossible to buy, way too expensive. And there's no even the newest phones because the government don't let import/export whatever we want, so it's gonna be hard for me to get a new battery...
I would get new battery and test it for a day then flash different ROM , stock for few days then any good rated ROM
No LoGiC said:
I would get new battery and test it for a day then flash different ROM , stock for few days then any good rated ROM
Click to expand...
Click to collapse
i bought a new battery and i'm testing it, so far so good. Thanks!
Leandrorv.21 said:
i bought a new battery and i'm testing it, so far so good. Thanks!
Click to expand...
Click to collapse
Glad that solved it let us know if any help needed and feel free to post future issues

Battery lasts like 10 minutes

Did a reset to try to fix the annoying noises when pressing buttons. Now the battery lasts about 10 minutes with screen on... Glad I still have warranty
Sent from my LG-H811 using Tapatalk
I'm having the same problem but battery won't last me more than 3 minutes
same here. it's draining and I can see the % go down by 3-4% every few seconds
I'm going to try a factory reset
What device are we talking about here?
In a forum that covers multiple devices it would be helpful if the device was identified, if not in the actual post then in the title. Just saying.
Electraglider said:
In a forum that covers multiple devices it would be helpful if the device was identified, if not in the actual post then in the title. Just saying.
Click to expand...
Click to collapse
7840 devices
minnaing said:
7840 devices
Click to expand...
Click to collapse
Thank you.
So, has anybody hand any positive results with fixing the battery draining issue? And if so, what was the solution?
I was able to fix the horrible battery issue (10 mins) by reverting to 5.0. Haven't tried updating to 5.1 yet. Don't really see any reason to.
jamebarron88 said:
I was able to fix the horrible battery issue (10 mins) by reverting to 5.0. Haven't tried updating to 5.1 yet. Don't really see any reason to.
Click to expand...
Click to collapse
Thank you for that.
Which brings up another question. Of the people that are having the battery drain issue, How many are having it with the 5.1 update and of those, how many got it OTA and how many had 5.1 out of the box? I got myself one for Christmas which is under the tree until then. I did make sure it would boot up before I wrapped it up and checked to see what version it has and it is 5.1.
Just fyi I was running 5.1 fine for weeks. It wasn't until I attempted to install the newest stagefright ota on my rooted device that I encountered a battery issue. I can't pinpoint exactly when the problem arose, though.
Sent from my LGLS990 using XDA Free mobile app
This happened to me, too. The battery would drain in 3 minutes. Moreover, I could not get catlog to display anything. (I was trying to see if there were any messages that might give a clue as to what was happening.) To prepare for a warranty return, I copied everything in the internal memory to my external sdcard. That freed up a few GB of space. Upon rebooting, The tablet's behavior returned to normal. No more battery drain. I do not know for sure, but I suspect that somehow a low memory condition led to the OS thinking that battery was draining rapidly. This suspicion was further supported by the fact that it only took a few minutes for the battery to recharge. So, if your battery drains in minutes, it could be that it actually is not but that the system thinks it is because there is insufficient free internal memory. that may have been a coincidence, of course. but maybe not.
I had the exact same battery drain issue a couple months ago on 5.1. After about two weeks of experiencing this problem intermittently, it disappeared on its own.
my charging is working fine but after power on it stuck on logo
SOLVED the problem after re-flashing system firmware. Wiped the data files.
Grrr, I'm having the same problem. Might try a factory reset
minnaing said:
SOLVED the problem after re-flashing system firmware. Wiped the data files.
Click to expand...
Click to collapse
Hi, how do you reflash your tablet to stock firmware. I have the same problem but can't find any guide to revert my tablet to stock.
tenchu_712 said:
Hi, how do you reflash your tablet to stock firmware. I have the same problem but can't find any guide to revert my tablet to stock.
Click to expand...
Click to collapse
1) I flashed blackburn DDO_BB and system.img from this LINK.
2) Update through OTA to Android 5.1. and reboot.
3) will receive OTA update again for Stagefright update IF u want update it. :fingers-crossed:
Note : if u go to step 3 u can't able to ROOT.
Same issue here,
I got my 7840 for 6 month now, and since a few days I my battery get some steps in it's charging / discharging trend
I will try your tips.
Hi,
I made some cleaning, free up some GB, and my tablets has returned to it's original battery duration !
very strange behavior !!
I didn't need to format. just remove some applications/ files

Battery Drains

To share your battery issues in this thread
I have very strange bug.... I am using honor 5x. When I switch on battery percentage, after charging my phone to 100% my battery start getting discharge. It's like it comes to 96% within few minutes of using. But the 100% charge does not hold even for more than 1 minute. The battery comes to 99% as soon as charger is detached. I am on 5.1.1 official Indian dual sim version.... Can anybody confirm same , are you getting same thing ?? I mean battery drain ! 
Well the phone was in one month exchange warranty from the website which was selling honor 5x phone apart from official warranty. When I called them they told me to download a alien app named smartcheck from a link provided on email. I called them them and they provided me a 16 digit Windows like code to open the app. There were lot of options in the app itself. The representative told me to select battery option he told me to plug in the charger and then let the app detect charging. Then the app told me to detach the charger after 15 seconds. Then the app uploaded something on internet and alas the customer care representative told me my phone battery is alright and it means they can't change it.
I was like amazed to see how can a app in lollipop can get battery stats when phone is not rooted ?? He was like I don't know sir , we can't change your phone... So am I the only one getting this strange battery drain or all people have same ??
Pretty much normal for any battery I would say.
a solution
sachoosaini said:
I have very strange bug.... I am using honor 5x. When I switch on battery percentage, after charging my phone to 100% my battery start getting discharge. It's like it comes to 96% within few minutes of using. But the 100% charge does not hold even for more than 1 minute. The battery comes to 99% as soon as charger is detached. I am on 5.1.1 official Indian dual sim version.... Can anybody confirm same , are you getting same thing ?? I mean battery drain ! 
Well the phone was in one month exchange warranty from the website which was selling honor 5x phone apart from official warranty. When I called them they told me to download a alien app named smartcheck from a link provided on email. I called them them and they provided me a 16 digit Windows like code to open the app. There were lot of options in the app itself. The representative told me to select battery option he told me to plug in the charger and then let the app detect charging. Then the app told me to detach the charger after 15 seconds. Then the app uploaded something on internet and alas the customer care representative told me my phone battery is alright and it means they can't change it.
I was like amazed to see how can a app in lollipop can get battery stats when phone is not rooted ?? He was like I don't know sir , we can't change your phone... So am I the only one getting this strange battery drain or all people have same ??
Click to expand...
Click to collapse
I have this issue , a solution I used is :
1. Full charging to 100%
2. Back up apps and .... .
3. Reset factory and erase all...
4. Restore back up
I used this method and now is better in keep chareged...
pccnet said:
I have this issue , a solution I used is :
1. Full charging to 100%
2. Back up apps and .... .
3. Reset factory and erase all...
4. Restore back up
I used this method and now is better in keep chareged...
Click to expand...
Click to collapse
Are you rooted ???
root?
sachoosaini said:
Are you rooted ???
Click to expand...
Click to collapse
No, back up with app "backup" from Huawei,it is in your app list.
jvc73 said:
Pretty much normal for any battery I would say.
Click to expand...
Click to collapse
well i haven't seen your comment. I had two android earlier. but with them i haven't faced any issues
pccnet said:
No, back up with app "backup" from Huawei,it is in your app list.
Click to expand...
Click to collapse
ohk. cool... I am now living with this thing. I will try to manage it with the time being.

My tab s3 keep restarting and freezing by itself

Hello everyone
I have Samsung Tab S3 since it's release in 2017 .. and it was a very nice tab till a couple months ago ..
It started restarting by itself .. and it happenes always when I'm not using it or when I'm pausing a video ..
And when I leave it for a couple hours i find out that it's turned off and it can't be turned on till I hard restart it ..
I tried :
Emptying the battery to the end then recharge and didn't work.
Removing SD card and didn't work.
Entering safe mode and still restarted.
Wipe cash partition didn't work.
Factory reset and didn't work.
And finally flash stock ROM with Odin without rooting .. problem not solved
When I put the tab on power saver the restarting takes so much longer to happen ..
Could it be a hardware related thing? Or a battery thing?
Thank you in advanced for your help
*Edit 1 (problem fixed) : I rooted my tablet and installed Kernel Auditor app and changed the governor to Userspace and set the minimum frequency of the CPU to 422 instead of 307 and made the app do the settings change on boot . After this it had not restarted for 3 days.
*Edit 2 lately I flashed lineageOS unofficial 18.1 android 11 into the tablet and edited the big clusters only to interval governor while keeping the small ones with blue schedule. My tablet now is working like a charm with no issue.
Has the battery SOT time noticeably decreased?
If below 80% of its original capacity it's time to replace it.
Any swelling is a battery failure, replace asap.
Changes in charging behavior could indicate a failure as well.
Has it been dropped or exposed to moisture? You see where this is going... mobos can also randomly fail.
Does it happen in safe mode?
Check it to rule out 3rd party apps.
Original rom, don't update the system apps, all power management should be disabled.
Pull SD card if it has one for now before reload.
blackhawk said:
Has the battery SOT time noticeably decreased?
If below 80% of its original capacity it's time to replace it.
Any swelling is a battery failure, replace asap.
Changes in charging behavior could indicate a failure as well.
Has it been dropped or exposed to moisture? You see where this is going... mobos can also randomly fail.
Does it happen in safe mode?
Check it to rule out 3rd party apps.
Original rom, don't update the system apps, all power management should be disabled.
Pull SD card if it has one for now before reload.
Click to expand...
Click to collapse
Thank you for replying
*After the restarting it gets stuck and shuts down and you have to turn it on by (down+power), if you turn it on immediately you have the same battery percentage but if I let it through the night and force turning it on the battery is decreased alot, it looks like when the tab is off after the freezing and restarting it is consuming alot of battery even if it's off.
*I tried the safe mode it still restarts
*I went to the beach 6 months ago and it stopped charging because of the moisture for about a week then it got back to its normal state
*I noticed that When I boot into (downloading mode) or (recovery mode) it stays on for days and doesn't restart or freeze
If you got salt water in it, it's already dead.
Needs to be pulled apart and inspected for corrosion damage. Sorry...
blackhawk said:
If you got salt water in it, it's already dead.
Needs to be pulled apart and inspected for corrosion damage. Sorry...
Click to expand...
Click to collapse
You mean the motherboard or the battery is dead ?
If the mobo got salt water on it or even water in it can destroy it. Current flow greatly accelerates corrosion.
The tab needs be dissembled*, dried and inspected for damage especially where there's high current flow and exposed conductors.
Sooner is better...
*pull battery connector asap
Ruudvan10101 said:
Hello everyone
I have Samsung Tab S3 since it's release in 2017 .. and it was a very nice tab till a couple months ago ..
It started restarting by itself .. and it happenes always when I'm not using it or when I'm pausing a video ..
And when I leave it for a couple hours i find out that it's turned off and it can't be turned on till I hard restart it ..
I tried :
Emptying the battery to the end then recharge and didn't work.
Removing SD card and didn't work.
Entering safe mode and still restarted.
Wipe cash partition didn't work.
Factory reset and didn't work.
And finally flash stock ROM with Odin without rooting .. problem not solved
When I put the tab on power saver the restarting takes so much longer to happen ..
Could it be a hardware related thing? Or a battery thing?
Thank you in advanced for your help
Click to expand...
Click to collapse
I had to replace motherboard
My tablet turns off by itself
Good evening. As the title says, my SM-T820 turns off randomly. I've changed the battery and installed several official firmwares with no luck so I don't know what else I could try, if anybody has any idea please tell me. Thank you so much Kind...
forum.xda-developers.com
blackhawk said:
If the mobo got salt water on it or even water in it can destroy it. Current flow greatly accelerates corrosion.
The tab needs be dissembled*, dried and inspected for damage especially where there's high current flow and exposed conductors.
Sooner is better...
*pull battery connector asap
Click to expand...
Click to collapse
Problem solved
It has been 3 days without a restart
I edited the thread with the fix
zenon21 said:
I had to replace motherboard
My tablet turns off by itself
Good evening. As the title says, my SM-T820 turns off randomly. I've changed the battery and installed several official firmwares with no luck so I don't know what else I could try, if anybody has any idea please tell me. Thank you so much Kind...
forum.xda-developers.com
Click to expand...
Click to collapse
Problem solved
It has been 3 days without a restart
I edited the thread with the fix
How did you root your device what software did you use?
is it still fine?
ThePilotWhoCantFly said:
How did you root your device what software did you use?
is it still fine?
Click to expand...
Click to collapse
Search about lineageOS 18.1 unofficial for tab S3 thread .. you will find all the tutorials to install the custom ROM and root the device ..
Ruudvan10101 said:
Search about lineageOS 18.1 unofficial for tab S3 thread .. you will find all the tutorials to install the custom ROM and root the device ..
Click to expand...
Click to collapse
Ah thank you, not sure if this is true but if you install a custom rom will you will lose functionality of the s-pen?
ThePilotWhoCantFly said:
Ah thank you, not sure if this is true but if you install a custom rom will you will lose functionality of the s-pen?
Click to expand...
Click to collapse
You are welcome
it will still work but the button will stop working .. after all you will get a 2017 tablet to work with Android 11 with an amazing speed and without all that bloatware that were slowing the device. And if you didn't like it you can go back to the stock rom whenever you want .
Ruudvan10101 said:
You are welcome
it will still work but the button will stop working .. after all you will get a 2017 tablet to work with Android 11 with an amazing speed and without all that bloatware that were slowing the device. And if you didn't like it you can go back to the stock rom whenever you want .
Click to expand...
Click to collapse
Right, thank you ill give it a go over the weekend
Ruudvan10101 said:
You are welcome
it will still work but the button will stop working .. after all you will get a 2017 tablet to work with Android 11 with an amazing speed and without all that bloatware that were slowing the device. And if you didn't like it you can go back to the stock rom whenever you want .
Click to expand...
Click to collapse
It worked has not crashed yet and I found that s-pen button thing annoying anyway so thanks again for the help
I sometimes find my S3 has shut down and requires a long press of the power button to boot up. I have not determined the cause. I wonder if just root will allow deleting enough bloatware to make a difference

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