Cure for "phatom touches" problem - Barnes & Noble Nook Tablet

As many of us are aware, there is a issue that can occur with a Nook Tablet going crazy with phantom touches. Essentially it looks as if you are tapping on the screen when you are not. It usually happens very quickly, one minute ok, the next everything is getting tapped all over the screen. This can cause data loss as the device thinks you are touching the screen. For example a file you were working on may abort before saving as it thought you hit "close".
I have been bugged by this issue on and off. Some people replace batteries to fix the issue, and while that will fix it 99% of the time, there is an easier (and cheaper way).
The problem appears to be the newton loses battery calibration. There has been talk in the past of deleting the battery file via CWM or other Android app that deletes this file (or even doing it manually with a file browser app, which may need root access). This battery file is only data since the LAST time you charged the device. Not the calibration data. And this file is deleted automatically everytime you plug it in to charge.
How I fixed it
After a lot of research I found that many Android devices there often a way of recalibrating the battery charge system. The steps are:
1. If you get phantom touches hit the power button as fast as you can to put it to sleep ande prevent anything occurring you might not want (aka a file deleted you wanted to keep etc).
2. Charge the battery to full, until the green light is lit on the charge indicator located on the Nook Tablet charge cable
3. Unplug the device from the charger
4. Use the Nook Tablet for 20 minutes with a high drain app (aka watch a video)
5. Plug the Nook tablet back into the charger and wait until the light turns green again.
6. Repeat steps 2-5 several times. I would suggest 3 or 4.
7. See if you get phantom touches again when the Nook Tablet power gets low. If you do try steps 2-5 again several more times.
In my experience after a few times of this, I no longer had the phantom touches issue.
Why it happens
I am not sure all the details as to why, but one time I do know for a fact that one time it happened after I had the tablet on the charger with a full charge (I had not got around to unplugging it yet) when the power to my home failed. It came back on a few minutes later but that night when I was using the device I got phantom touches at about 50% power left. Which I never had before. After doing the above method it is working fine again even down below 15% power (which I never let it get that low normally).
I suspect that the power failure caused the charger system to recalibrate and since the battery was already at full, messed up the whole system. I also would NOT leave the Nook Tablet on a charger for long periods. If it sits at 100% for a long enough period it is possible for the battery to drop down a little and start charging again. This could start a recalibration again, bringing back the phantom touches issue.
I have not posted until now as I was not certain what fixed it before. If it was the charge to full, use for 20 minutes, then charge again method or turn it off then charge method worked. I tried several before and wasn't sure which one worked. Now I can say the put to sleep, charge, use, charge again method does work. But don't turn off the device then charge if you can help it. If the Nook tablet is powered all the way off (not sleep) doesn't seem to do a battery recalibrate. Or at least my best experience is to plug it in while in sleep mode, charge to full (green light), use for 20 minutes, and then charge again.
Sorry if this has been posted before. But a quick search didn't reveal any hits.
UPDATE:
Upon further tests, often powering off the device fully (holding power for 30 seconds or pressing for 5 and saying yes to the popup to power off), then plugging it in, letting it turn on and charge to full will fix the problem as well.

Related

[Q] Power light going *blink* *blink* *LongPause* (Archos 101)

I'm at a bit of a loss here..
Instead of powering on, the battery light goes *blink* *blink* *LongPause* ..
I have a (3 day old) Archos 101 and updated to the most recent software when it I first powered up the device. I probably drained my battery yesterday when I put it in the night stand drawer while Aldiko was trying to import a fresh ePub file..
When I turned it on this morning, it blinked once and stopped. When I plugged in the charger (figuring the battery was drained) the "blink blink longpause" started. Long pressing the power button stops the blinking. If the power is connected, the power light burns, so I figure its charging. If its not on power, the power light doesnt burn. I tried the "Hold + while powering up" to boot into recovery but that doesnt change anything.
The Archos FAQ said something about charging the battery, but its been charging for about 9 hours now and the device still wont turn on.. (Green light still burns continuously while charging, not when disconnected) My XDA forums search didnt turn up any results..
Anyone got a clue what this means, what I can do or whatever? Tnx
Maybe the screen froze. Try resetting it by holding down the power button for ten seconds or so. If you're charging it at the same time, it should boot right back up after the reset is complete.
Sent from my A32
Yes, I tried that :/ That's what I meant by long pressing the power button. It changes the blinking pattern to just the burning power led..
Thanks for the tip though!
Sent from my HTC Magic using XDA App
Give it another shot. Disconnect the plug. Hold down the power button for a little over 10 seconds. I would do like 15 in my head. Wait a few seconds after that and press the power button quickly once. If you get the steady green light just wait. Dont keep pressing it. You should eventually see the Archos splashscreen. I have had this happen on several occassions when the system has been idle for a while with the screen off. Hope it works.
Ok; I did that.
Except that when I push the power button that last time to have it boot up; the power light just flashes once. I didnt touch it to be sure and it doesnt start.
When I plugged in the power supply after that, the *blink blink longpause* resumed.
When I hold down the power btn now, it reverts to continuous burning green power led.
Its been charging for more than 24 hours now.
This sounds like what happened to mine. it happened after about 3 days, too. I finally got my replacement the Tuesday before Christmas.
If you get it powered up, get your stuff off & clean up your personal info (something I wasn't able to do.
From my post on AchosFans Forum:
For several days my Archos wouldn't take a charge. I didn't think anything about it the first day...stuff happens. After using it the next time, not really thinking there was a problem I plugged it in (and of course it turned itself on again). So this morning it only had 8%. I messed around a few minutes before work resetting it & such - checked setting>about>battery stats and it said "charging" and 0% battery. When I came home this evening it still said "charging" & 0% battery. It then shut down (with a not-normal screen flicker) the first time I unplugged it (hoping to cycle it or get lucky) and it is now a brick. When I plug it in now the charging light did a fast-double-blink and it it remained dead.
I called Archos & they told me to send it back. She didn't ask for much info before telling me to send it, which I took to mean that it is a known issue.
Same happened to me
The same has happened to me after the archos 101 drained its battery fully. I think the firmware has a flaw where it lets the archos drain its battery too far. In that state, hooking it up to the charger wont make it start charging all the time.
I had the blink-blink-blink problem also, even after it had been on the charger for hours. Finally it started working (and charging! )again after lots of 15-second Powerbutton presses, some in combination with Volume Up or Volume Down, and some with and some without the charger connected. Suddenly it turned on (showing 0% charge in the Settings, Information panel indicating it had fully drained and hadn't been charging in the previous hours) . I advice you to keep trying pressing the Power button 15 seconds with the charger connected, and experiment with pressing it in combination with the volume button, followed by a short Power press to boor the Archos.
In the mean time (till a new firmware comes), i make a habit of not fully draining the Archos (i will install Tasker to let it shutdown at 10%) , and checking if the green led comes on after plugging in the charger. Only when the green led is on, it's really charging. And it should start blinking after a few hours to indicate its full.
My wife has a chinese android iPad clone (a Flytouch II) and guess what? It's also picky at charging and turning on.
The Gravity reply had me scared (tnx though) but I'm glad to report that pwhooftman's post helped!
I plugged it in, put a movie on and started trying to reset/start it. It happened reasonably quickly after that.. I pressed the power button while it was off power, the power led flashed once as before. I plugged in the power. The green light lighted up. I pushed the power and + for 15 seconds, and pressed the power button once shortly. Unlike the other times, the blinking pattern didnt start and the green light kept burning. Hopeful, I put it down and waited - as the FAQ said it would start when it d charged more. Finally after a while, I pressed the power button and it booted. Not exactly exact science, but Im just happy that it works again :/
I guess the "blink blink longpause" means something like "I know I've got power but I cant seem to load my battery" - Archos should have this info in their manuals.
Thanks guys
G3n said:
The Gravity reply had me scared (tnx though) but I'm glad to report that pwhooftman's post helped!
Thanks guys
Click to expand...
Click to collapse
Nice to know I can scare people...and it isn't Halloween!
I tried everything I could think of to get it to take a charge, with no luck. The problem I had with mine was the times it wouldn't take a charge BEFORE I had drained it - that is why it got drained in the first place.
I hope it was only mine!
He s at it again. Drained to 3% and now it wont charge anymore. *sigh*
except he wont even do the blinking anymore now.
Seems to be a fairly common issue with these tablets :/
Same thing was happening to me too. Dunno if this will work for people, but here is how I fixed mine.
Hold your finger on the power button for 10 seconds while the blinky light is on. This should stop the light completely.
Then plug the charger in. This gave me a continuous light rather than a blinky light. Leave it like that for a couple of hours and then try powering it on again.
Hope this works for others.
Had this happen to me once so far. Seems to have to do with it going into a sleep state or something. If I leave it for long and the screen turns off. Sometimes it won't come back up without first holding down the power to shut it down (even though I can't see anything on the screen) and then waiting to boot back up. I had to plug it in, get the steady light and then power on and it worked.
OK, I know this sounds weird...
But what's the temperature of the A101 like?
I had an identical problem a short while ago, and a forum post suggested that the tablet could be too cold. I thought it was a total shot in the dark, but I wrapped the Archos in a quilt for a few minutes, and amazingly enough, it popped back into life with the charger plugged in, and has been pretty fine since then.
To be fair, it could be one of three things: (i) temperature is the issue, (ii) coincidence, (iii) a bad connection in the pins/socket of the adapter input on the Archos 101 which just needs 'jiggling.'
I have also noticed that if I charge the Archos while it is in standby, I never get more than 92-94% battery. If I shut it down, plug in, then shut it down again when it restarts on power supply insertion, I can usually get 98% battery, at the least, sometimes 100% battery.
I agree, we shouldn't have 'quirky' devices, or have to wait for firmware to fix them, but other device makers have had similar problems in the past with battery reporting, until appropriate firmware fixes.
it happened to me last night frustrated the heck out of me couldn't get it to turn on no matter what i did, so i took it back to pc world and the guy said
"what would you like to do, out of curiosity do you like it?" I replied no and he said "then ill refund you"
i then paid the extra on a galaxy tab and not looking back the archos was a complete pile of sh!te! I almost cried when i turned it on and spent the next two months convincing myself i actually liked it.
its woefully made, cheap and tacky, screen is pathetic and the memory appalling.
i know its cheaper than tab and iphone but for 270 it should still be fit for purpose and this is not it's the worst gadget ive ever owned by a long long shot, i didn't even show it off at work because i was so embarrassed at how bad it was.
G3n said:
He s at it again. Drained to 3% and now it wont charge anymore. *sigh*
except he wont even do the blinking anymore now.
Click to expand...
Click to collapse
So, how did the story end?!? Did it survive?
Ok...
I kid you not, i've tried warming the archos up with a hot water bottle for several seconds and that did the trick appearently...
Had the same problem.
TheTen said:
OK, I know this sounds weird...
But what's the temperature of the A101 like?
I had an identical problem a short while ago, and a forum post suggested that the tablet could be too cold. I thought it was a total shot in the dark, but I wrapped the Archos in a quilt for a few minutes, and amazingly enough, it popped back into life with the charger plugged in, and has been pretty fine since then.
To be fair, it could be one of three things: (i) temperature is the issue, (ii) coincidence, (iii) a bad connection in the pins/socket of the adapter input on the Archos 101 which just needs 'jiggling.'
I have also noticed that if I charge the Archos while it is in standby, I never get more than 92-94% battery. If I shut it down, plug in, then shut it down again when it restarts on power supply insertion, I can usually get 98% battery, at the least, sometimes 100% battery.
I agree, we shouldn't have 'quirky' devices, or have to wait for firmware to fix them, but other device makers have had similar problems in the past with battery reporting, until appropriate firmware fixes.
Click to expand...
Click to collapse
G3n said:
I'm at a bit of a loss here..
Instead of powering on, the battery light goes *blink* *blink* *LongPause* ..
I have a (3 day old) Archos 101 and updated to the most recent software when it I first powered up the device. I probably drained my battery yesterday when I put it in the night stand drawer while Aldiko was trying to import a fresh ePub file..
When I turned it on this morning, it blinked once and stopped. When I plugged in the charger (figuring the battery was drained) the "blink blink longpause" started. Long pressing the power button stops the blinking. If the power is connected, the power light burns, so I figure its charging. If its not on power, the power light doesnt burn. I tried the "Hold + while powering up" to boot into recovery but that doesnt change anything.
The Archos FAQ said something about charging the battery, but its been charging for about 9 hours now and the device still wont turn on.. (Green light still burns continuously while charging, not when disconnected) My XDA forums search didnt turn up any results..
Anyone got a clue what this means, what I can do or whatever? Tnx
Click to expand...
Click to collapse
HERE is the FIX ! I am on my second A-70/250 - my wife has the 8gb version, and I thought the 250gb one was simply defective - evidently, this IS a known issue, but it can be fixed, and I sent back my other one without reason
Anyways, no more pity party for me, here is the fix - if you have the flashy-power light dealio going on, plug your Archos into the power adapter, plug the adapter into the wall, and plug in the USB CABLE to the Archos, and to your PC - the Archos WILL pwoer up, when it does, it asks if you wish to mount the USB to copy files, select, "YES" and let it sit and charge ! Now - the REASON it does this is VERY simple, and it kills me to admit that I was killing my tablet all by myself ! Disable the "never off" screen thingy - set it for 10 minutes - (settings - display - screen timeout). Go into your power settings as well - (settings - power management) and make sure there is a checkmark in the deep sleep area ! THAT IS IT ! You are fixed ! Dang... I REALLY wish I would have found all this out before I returned the other one - I had SO much stuff loaded on it ! GAH !! - SenKat !
I got the same problem yesterday, it kept blink blink and could not turn on. After 5 hour charging, I warmed it up by hair dryer and suddenly it's on. Crazy amazing! Hahahahahuahuahuahua.
Temperature is main problem. Try with your hair dryer!!! Heheheheheh
Its sounds unbelievable, but low temperatures are indeed a cause.
Sent from my GT-I9000 using XDA App
my a70 had this same problem, left it rest a whole night, then plugged it in to usb and power (usb 1st) and it booted up, hope this helped

[Q] Prime shut down, won't turn on again

Hi! Reposting (sort of) from the official lockups thread, but since my issue might not really be related to ICS I thought I might ask for help here instead:
Ok. So I had my Prime docked the whole night, not charging. This morning I checked for mails at about 8.00am (dock battery > 90%, tab battery > 80%) then wanted to check again at 10.30am and it was just turned off.
I tried to turn in on again but it wouldn't show anything, not even a short vibrate or something. The only thing that still tells me there is any life is the small LED in the power button that blinks twice when I plug the tablet to the power cord or when I hold down the power button.
I've already tried basically anything I could find on the interwebs, including:
- Reset button in hole with a paper clip; pressed it only for a second, for 5 seconds, 30 seconds, you name it
- Power button for 1,5,30 seconds, 3 seconds afterwards ...
- Vol down + power button for 1,5,30 seconds ...
Still nothing. Left it on the charger for now though the LED doesn't show any sign of charging. Power supply does work on the dock where the LED turned green because it's obviously completely charged.
Did I miss anything? Did I get the .13 firmware overnight without me doing anything and now it just wouldn't wake from sleep? Do I have to send it in?
I want to add that lockups got more frequent during last week but I could always boot again after a few minutes OR when I plugged in the power cord, even though the battery wasn't nearly dry before the lockup.
Read: I didn't have reboots, I had crashes that felt like an overheating issue known from the PC world but those crashes NEVER happened while charging, no matter what I threw at the tablet.
Edit: tab was in power savings mode.
Edit 2: For what it's worth - C1 serial number, 0215 tablet, 4.0.3, .11 firmware (at least yesterday), never rooted/modded/whatevered.
Edit 3: I just realized I made this thread in General instead of Q&A ... Can this be moved to the appropriate section please?
Nobody? Another user had this issue once and after 5 hours of charging his device just could be rebooted. I've been charging for more than 7 hours now and still no vital signs.
Has anybody else experienced this?
Unfortunately the situation sounds pretty bleak to me.
Sent from my Transformer Prime TF201 using Tapatalk
Havoqq, same thing just happened to me exactly as you described. Already have a RMA number but was seeing if you found out any info regarding a fix? Thanks
Is anyone still working on this thread????
Thinking a battery pull
after reformatting /dev/block/mmcblk0 to fat32
i got
Code:
cant mount /sdcard
from CWM. CWM doesnt like fat32 i guess.
but then i stupidly did factory reset (on stock rom) which made me lose CWM.
so my TF201 now doesnt register with ADB and FASTBOOT, yet it does go into FASTBOOT mode. It also shows up in device manager, so its not a driver problem. Therefore its not a brick IMHO. i have been switching between mac and windows.
Currently my solution is to drain the battery. im hoping for the best. but also thinking of a battery pull. is this worth the effort? Do you think that will work?
Havoqq said:
Hi! Reposting (sort of) from the official lockups thread, but since my issue might not really be related to ICS I thought I might ask for help here instead:
Ok. So I had my Prime docked the whole night, not charging. This morning I checked for mails at about 8.00am (dock battery > 90%, tab battery > 80%) then wanted to check again at 10.30am and it was just turned off.
I tried to turn in on again but it wouldn't show anything, not even a short vibrate or something. The only thing that still tells me there is any life is the small LED in the power button that blinks twice when I plug the tablet to the power cord or when I hold down the power button.
I've already tried basically anything I could find on the interwebs, including:
- Reset button in hole with a paper clip; pressed it only for a second, for 5 seconds, 30 seconds, you name it
- Power button for 1,5,30 seconds, 3 seconds afterwards ...
- Vol down + power button for 1,5,30 seconds ...
Still nothing. Left it on the charger for now though the LED doesn't show any sign of charging. Power supply does work on the dock where the LED turned green because it's obviously completely charged.
Did I miss anything? Did I get the .13 firmware overnight without me doing anything and now it just wouldn't wake from sleep? Do I have to send it in?
I want to add that lockups got more frequent during last week but I could always boot again after a few minutes OR when I plugged in the power cord, even though the battery wasn't nearly dry before the lockup.
Read: I didn't have reboots, I had crashes that felt like an overheating issue known from the PC world but those crashes NEVER happened while charging, no matter what I threw at the tablet.
Edit: tab was in power savings mode.
Edit 2: For what it's worth - C1 serial number, 0215 tablet, 4.0.3, .11 firmware (at least yesterday), never rooted/modded/whatevered.
Edit 3: I just realized I made this thread in General instead of Q&A ... Can this be moved to the appropriate section please?
Click to expand...
Click to collapse
Hi this may be related to the problem I have had. how long did you hold the power button down for? when I had this I too thought that it was terminal but I kept the power button held down for about 20 seconds and then it came on.
There have been a few threads about this issue and since trying the suggestion on there I've not had the problem any longer.
this worked for me :-
goto Settings > ASUS Customized Setting > BATTERY SAVING and uncheck MobileDock Battery saving mode. credit to SimonSaysDie for the solution.
Good luck

Boot loop with low battery

I wanted to share this experience in case it happens to anyone else. I rooted my nook tablet and installed CM and everything worked great. This is a full install to the OS, not running from SD card at all, no SD card present. However, the battery ran low into the red zone and shut down the tablet. I plugged it in and it tried to start up without me even hitting the power button, as if it was in deep sleep and tried to wake up when it saw power. But, because it didn't have enough juice it would only get to the CWM menu screen and it would power cycle and start over again. I did the power/volume reset but that wouldn't shut down the tablet completely because every time I would plug it in it would try to restart again. Finally I was able to get it to run long enough to get to the CWM recovery menu and quickly choose power down option at which point it began charging without trying to restart. After I let it charge for an hour it reached about 60% at which point it started fine and has been fine since. It's a reminder to not let the battery drain too low because I'm not sure if this was a one time thing or if it is going to happen every time the battery drains low.
I had the same issue, my solution was to keep powering it on until it drained the battery completely. Finally I got a warning message that the batter charge was too low to power up. At this point you can plug it into the charger and it won't try to auto start.
I have a similar (maybe the same issue). But I have an additional one, because I am using a SD card. 2 Things to care about:
1. Use a powerful enough charger and just plug it in, it might boot cycle automatically, but at some point it will boot correctly... For me the charger of my Motorola Defy (850mA) with the original Nook charging cable works.
2. Leave the SD card removed while booting (I just "click" on it, so it is removed but still "connected" to the case), otherwise I also just get never-ending boot cycles for some reason - but maybe this SD card is "partially bootable" for some reason (though I never used it as a bootable SD card...)

[Q] Nook Tablet shuts off when plugged in

I have a Nook Tablet (NT) that is rooted and running CM 10.2. All was well until recently when I noticed that once the battery is drained it'll take almost a day for it to turn back on, most of the time being stuck in a loop where the "battery is too low to power on" screen will appear and reappear. Two days my daughter was using it to watch Netflix and the low battery toast appeared, she plugged it in and the NT shut off. Pressing the power button produced nothing until we unplugged it again. I tried using three different cords including a fastboot cord I made for our KFHD, each time it shut right off and won't start back up. I've tried plugging a cord in without any power and it doesn't have any effect, yet the minute any kind of power is introduced....it shuts off and stays off while plugged in.
I searched Google, read almost every sorta relevant post and have searched other forums as well with no luck. Has anyone had this problem? Has anyone solved it? What could be the problem? Any help is appreciated. :crying:
KFlannigan5 said:
I have a Nook Tablet (NT) that is rooted and running CM 10.2. All was well until recently when I noticed that once the battery is drained it'll take almost a day for it to turn back on, most of the time being stuck in a loop where the "battery is too low to power on" screen will appear and reappear. Two days my daughter was using it to watch Netflix and the low battery toast appeared, she plugged it in and the NT shut off. Pressing the power button produced nothing until we unplugged it again. I tried using three different cords including a fastboot cord I made for our KFHD, each time it shut right off and won't start back up. I've tried plugging a cord in without any power and it doesn't have any effect, yet the minute any kind of power is introduced....it shuts off and stays off while plugged in.
I searched Google, read almost every sorta relevant post and have searched other forums as well with no luck. Has anyone had this problem? Has anyone solved it? What could be the problem? Any help is appreciated. :crying:
Click to expand...
Click to collapse
This is an old post but I'm wondering if you ever found a solution? My kids nook tablet is doing the same thing. Thanks!
mpry1 said:
This is an old post but I'm wondering if you ever found a solution? My kids nook tablet is doing the same thing. Thanks!
Click to expand...
Click to collapse
I have a hunch the battery is starting to fail. It is not a good idea to let the battery get too low, the reason being if it does then the circuity inside tells the nook that the battery is too low to function. When that happens the nook won't power on OR charge quickly. It can only trickle charge, which is why it can take a long long long time to get enough power to turn on.
If this is happening without warning, then it is because the battery indicator calibration is off. If it does flash up a battery warning turn it off right THEN (put it to sleep by pressing the power button once) and plug it in. This should keep it from powering off totally and should charge quickly.
If it keeps happening, it could be the battery needs to be replaced. There are two places to get one that I know of batteryship.com and newpower99.com both seem to come with tools to do the job.
My tablet started doing the odd phantom touches when the battery gets below 23%. I am trying to find a (real) way to calibrate it, but so far no go. But if need be I can just plug it in at 25% or so, as long as it doesn't get any worse. However from what I hear they often do.
Darth Newton said:
I have a hunch the battery is starting to fail. It is not a good idea to let the battery get too low, the reason being if it does then the circuity inside tells the nook that the battery is too low to function. When that happens the nook won't power on OR charge quickly. It can only trickle charge, which is why it can take a long long long time to get enough power to turn on.
If this is happening without warning, then it is because the battery indicator calibration is off. If it does flash up a battery warning turn it off right THEN (put it to sleep by pressing the power button once) and plug it in. This should keep it from powering off totally and should charge quickly.
If it keeps happening, it could be the battery needs to be replaced. There are two places to get one that I know of batteryship.com and newpower99.com both seem to come with tools to do the job.
My tablet started doing the odd phantom touches when the battery gets below 23%. I am trying to find a (real) way to calibrate it, but so far no go. But if need be I can just plug it in at 25% or so, as long as it doesn't get any worse. However from what I hear they often do.
Click to expand...
Click to collapse
The problem you experienced with NT CM flaky battery reading and with NT going beserk at low battery reading was discussed at http://forum.xda-developers.com/showthread.php?t=2551512.
FWIW there are some battery-calibration apps but I have not tried them.
I'm starting to think it's a hardware issue. I have replaced the battery twice and did a clean install of liquid smooth and it still shuts off completely when it gets plugged in. It will fully charge while plugged in but it will not turn on at all while power is going to the battery through USB. Once unplugged it will boot normally. Really strange.
digixmax said:
The problem you experienced with NT CM flaky battery reading and with NT going beserk at low battery reading was discussed at http://forum.xda-developers.com/showthread.php?t=2551512.
FWIW there are some battery-calibration apps but I have not tried them.
Click to expand...
Click to collapse
I will check out the thread, but I am running the B&N stock 4.3 currently (and rooted).

Random shutdown issue after replacing battery - issue is still there after returning to original battery

A couple of days ago I replaced the battery on my Poco F1, because the phone is 2.5 years old and AccuBattery reckoned it was at 71% health. There were no issues with the phone, only that the battery life wasn’t as good as it once was (it was still running from 100% - 0% battery charge).
I bought the battery from AliExpress (this one to be precise) and the process of switching it out was easy and faultless, as far as I could tell.
The reassembled phone booted up fine and the new battery was at ~ 50% capacity. On the AliExpress listing it said to run the battery flat, which is what I did and it lasted quite a few hours - all good.
I then recharged the phone to full, as stated in the instructions. Regretfully, I interrupted the first recharge a couple of times by unplugging the phone for a few minutes each time. I'm telling you this for full disclosure - I'm unsure if this is likely to have caused the problem that I am now facing.
The fully recharged phone lasted a few hours and then shut itself down, whilst on ~ 70% battery I believe. This was the first time I realised there was a problem. The phone would not turn back on - holding down the power button and/or any combination of volume buttons did absolutely nothing. However, plugging the phone in caused the battery charging screen to appear instantly and subsequently, holding the power button whilst still plugged in would turn the phone on as normal. The phone would then boot up and battery percentage would be at ~70%, as it was when it shutdown (once booted, volume keys work fine). The phone would appear to charge as normal, but whenever I unplugged the phone, it would eventually shutdown on a high percentage after anything from a few seconds up to around an hour.
I thought I must have gotten a dodgy battery, so I took it out and put the original one back in. Now the old battery has all of the same symptoms as the new one – it won’t turn on unless plugged in and randomly shuts down after a period of time. If I manually turn the phone off when unplugged, it won’t turn back on unless it is plugged in. Also, a reboot just shuts it down.
I happened to have a spare charging port board, so I put that in to see if I’d fried something on there, but that hasn’t helped.
I’m tempted to reset the phone to stock (currently running Pixel Experience with TWRP installed) but am worried that it will brick the phone if it tries to reboot during the flashing process. Also, I believe that the fact I can’t force boot into fastboot with volume down/power buttons proves it is a hardware issue?
Any ideas are very welcome.
I think unless you have access to an EDL authorised account it's better to not flash MIUI at this stage. Risk of bricking the device...
07lema said:
A couple of days ago I replaced the battery on my Poco F1, because the phone is 2.5 years old and AccuBattery reckoned it was at 71% health. There were no issues with the phone, only that the battery life wasn’t as good as it once was (it was still running from 100% - 0% battery charge).
I bought the battery from AliExpress (this one to be precise) and the process of switching it out was easy and faultless, as far as I could tell.
The reassembled phone booted up fine and the new battery was at ~ 50% capacity. On the AliExpress listing it said to run the battery flat, which is what I did and it lasted quite a few hours - all good.
I then recharged the phone to full, as stated in the instructions. Regretfully, I interrupted the first recharge a couple of times by unplugging the phone for a few minutes each time. I'm telling you this for full disclosure - I'm unsure if this is likely to have caused the problem that I am now facing.
The fully recharged phone lasted a few hours and then shut itself down, whilst on ~ 70% battery I believe. This was the first time I realised there was a problem. The phone would not turn back on - holding down the power button and/or any combination of volume buttons did absolutely nothing. However, plugging the phone in caused the battery charging screen to appear instantly and subsequently, holding the power button whilst still plugged in would turn the phone on as normal. The phone would then boot up and battery percentage would be at ~70%, as it was when it shutdown (once booted, volume keys work fine). The phone would appear to charge as normal, but whenever I unplugged the phone, it would eventually shutdown on a high percentage after anything from a few seconds up to around an hour.
I thought I must have gotten a dodgy battery, so I took it out and put the original one back in. Now the old battery has all of the same symptoms as the new one – it won’t turn on unless plugged in and randomly shuts down after a period of time. If I manually turn the phone off when unplugged, it won’t turn back on unless it is plugged in. Also, a reboot just shuts it down.
I happened to have a spare charging port board, so I put that in to see if I’d fried something on there, but that hasn’t helped.
I’m tempted to reset the phone to stock (currently running Pixel Experience with TWRP installed) but am worried that it will brick the phone if it tries to reboot during the flashing process. Also, I believe that the fact I can’t force boot into fastboot with volume down/power buttons proves it is a hardware issue?
Any ideas are very welcome.
Click to expand...
Click to collapse
Exactly the problem I am going through. It's all started today. I am currently running stock MIUI. It keeps boot looping if I do not plug the charger. But once it's plugged, it will load up normal.
amn1987 said:
I think unless you have access to an EDL authorised account it's better to not flash MIUI at this stage. Risk of bricking the device...
Click to expand...
Click to collapse
I did flash stock MIUI in the end. Did not brick it, but also did not fix it. The phone now turns off immediately after being unplugged every time. I got myself a black Friday Poco X3 Pro so I'm now selling this phone for parts in UK
https://www.ebay.co.uk/itm/154819038771?mkevt=1&mkcid=16&mkrid=710-127635-2958-0
07lema said:
I did flash stock MIUI in the end. Did not brick it, but also did not fix it. The phone now turns off immediately after being unplugged every time. I got myself a black Friday Poco X3 Pro so I'm now selling this phone for parts in UK
https://www.ebay.co.uk/itm/154819038771?mkevt=1&mkcid=16&mkrid=710-127635-2958-0
Click to expand...
Click to collapse
It could be a buggy PMIC issue similar to https://forum.xda-developers.com/t/...android-11-0-vayu-bhima.4267263/post-85119331
Third-party batteries are mostly crap and probably the original battery is completely drained and the BMS isn't allowing it to be charged as a safety measure?
https://t.me/crDroidPoco/207293 Available in the EU.

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