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I was wondering if anyone else was having this issue.
I've charged my Nexus7 overnight on three occasions. Plugging it in before I went to bed (~1AMish) and getting it on my way to work (~8:30AMish). Out of those three times, on two of them, when I went to get my tablet the unit was powered off. I know for a fact that when I plugged it in, it was on, and no one touched it in the meantime.
The most recent occasion was this morning.
On all three occasions, the unit still had 40-50% battery life left.
On two other occasions, I've charged it during the day for a few hours, and it was fine.
Additionally, I've never had the unit turn itself off overnight when it wasn't plugged in. And I'm using the charger/cable that came with it.
Lastly, the first occasion was on the stock kernel/rom, and the second was on the motley kernel (but stock ROM).
So it seems like something is causing the unit to power itself off if it's on the charger for too long. This is concerning, because the only thing I can think of is that it's overheating and shutting down as a protection mechanism.
Any thoughts or ideas?
Plugged mine in for the first time last night at 11:30. Slept till 8, hit the power button and everything was fine.
Basically, no issues here.
Was it fully charged when you switched it back on? I ask because I shut mine down for the overnight charge last night (plugged into a laptop, not the wall - there's only one socket near the bed and my battery-sucking phone gets that juice), and when I woke up it had only gone from ~30% battery to 55%.
phonic said:
I was wondering if anyone else was having this issue.
I've charged my Nexus7 overnight on three occasions. Plugging it in before I went to bed (~1AMish) and getting it on my way to work (~8:30AMish). Out of those three times, on two of them, when I went to get my tablet the unit was powered off. I know for a fact that when I plugged it in, it was on, and no one touched it in the meantime.
The most recent occasion was this morning.
On all three occasions, the unit still had 40-50% battery life left.
On two other occasions, I've charged it during the day for a few hours, and it was fine.
Additionally, I've never had the unit turn itself off overnight when it wasn't plugged in. And I'm using the charger/cable that came with it.
Lastly, the first occasion was on the stock kernel/rom, and the second was on the motley kernel (but stock ROM).
So it seems like something is causing the unit to power itself off if it's on the charger for too long. This is concerning, because the only thing I can think of is that it's overheating and shutting down as a protection mechanism.
Any thoughts or ideas?
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I had this happen to me on the first unit I had... I was actually using stickmount to transfer some data and left the usb adapter plugged in for about an hour and when I picked it back up it was DEAD.... I could not get it to boot up at all until I did the recovery (power/volume) method and then everything was fine but I returned it anyways cause of a defective screen... I am now on my 3rd unit from Sam's Club and I think I might have a keeper...? (Knock on wood) :fingers-crossed:
CrookedKnight said:
Was it fully charged when you switched it back on? I ask because I shut mine down for the overnight charge last night (plugged into a laptop, not the wall - there's only one socket near the bed and my battery-sucking phone gets that juice), and when I woke up it had only gone from ~30% battery to 55%.
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Yes, it was at 100%.
Keep in mind that charging via computer's USB port takes much longer. Maybe your laptop went into sleep mode and shut down power to the USB port?
phonic said:
Yes, it was at 100%.
Keep in mind that charging via computer's USB port takes much longer. Maybe your laptop went into sleep mode and shut down power to the USB port?
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Nope, my fiance's phone was plugged into the same laptop and it was fully charged in the morning. And as a general rule, I've never known the computer to automatically sleep while on AC power, even when the screen is closed.
Thank god i'm not the only one experiencing this. My nexus 7 always seems to turn off after I leave it overnight plugged in for charging. I thought it was a kernel issue but i've switched kernels and i still experience it. Still unsure as to what is causing it.
Same here. Its odd it only seems to be for an extended period of time. Also my battery was indeed fully charged. Should I exchange at Sam's?
Sent from my Nexus 7 using xda premium
There is nothing else wrong with the tablet. I have a feeling it could be some sort of hardcoded feature where if it notices that you're plugged into the wall charger with 100% battery and the tablet is in deep sleep for a certain period of time, it automatically shuts down.
evonc said:
There is nothing else wrong with the tablet. I have a feeling it could be some sort of hardcoded feature where if it notices that you're plugged into the wall charger with 100% battery and the tablet is in deep sleep for a certain period of time, it automatically shuts down.
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Ikr. First time it happened to me I was like wtf? It might to stop the 2 amp charger from overcharging? My unit is fine, I think the sound is just right. I might get that squaretrade warranty though.
Sent from my Nexus 7 using xda premium
Well, I feel a little better that I'm not the only one with this "problem".
The question is, is this a "problem" or a "feature". I guess we won't know unless we ask Google/Asus (good luck getting that answer) or enough people respond saying that it happens to them too. But if people start saying it does not happen to them, it makes it more likely to be a problem....
This happens to my phone due to overheating. The tablet does run hot when charging. See if there's a temperature logging app and run it overnight.
Sent from my LG-P999 using xda app-developers app
It would be nice if it would just cut off the battery charge and run directly on A/C. But I guess I would rather have it power off than explode.
isnt bad to charge it overnight like i believe from 1% to 100% chrge is like almost 3hrs fully chrged.. i just alarm myself for 3hrs to check if its fully chrged already then unplug it
Sent from my Nexus 7 using xda app-developers app
lyrad12 said:
isnt bad to charge it overnight like i believe from 1% to 100% chrge is like almost 3hrs fully chrged.. i just alarm myself for 3hrs to check if its fully chrged already then unplug it
Sent from my Nexus 7 using xda app-developers app
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True, it's not good to constantly charge the battery once it's full.
Most devices however have a built in charger kill switch once it reaches that point. Laptops for example will switch to A/C power and only start recharging the battery once the level drops to ~95%. I believe my phone does this as well (SGS2).
I guess I'm OK with it turning itself off, assuming that it really is a safety feature. My main concern was something was wrong. It would have been nice if they mentioned this in the 100pg Nexus Guide eBook though .
phonic said:
It would have been nice if they mentioned this in the 100pg Nexus Guide eBook though .
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Ikr, such a thick guide
Sent from my Nexus 7 using xda premium
I want to add my own observation -- mine was almost fully charged, I plugged it to my computer's USB, turned the screen off, walked away. A couple hours later, the Nexus 7 was turned off. But I was shocked to find that, pressing the power button couldn't turn it on. The first thought came into my mind was that my computer did not charge the Nexus 7 and the battery ended up completely drained. So, I plugged it to the wall charger, left it on for a day. 1 day later, I tried to turn it on again. No, it didn't work. I was panic and decided to Google about how to reset and checked if I could wipe it and sent it back for a replacement. I found that pressing the power, vol up/down button at the same time can force a reboot. I tried that and bingo, it booted into the bootloader. Before I wiped, I decided to try to boot back to the Android OS. Surprisingly, that worked. I was happy and decided to ignore this incident. Then, today, it happened again. This time, I immediately used the power + vol up/down trick to reboot, and that booted me right back into Jelly Bean. I checked the battery status and it's fully charged, which meant my computer was charging it all along. For some reasons, the Nexus 7 would just turn off itself. And, in my case, pressing the power button alone would not reboot it.
Toys Samurai said:
I found that pressing the power, vol up/down button at the same time can force a reboot. I tried that and bingo, it booted into the bootloader.
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Sounds like to me that it's hard locking, not "powering off", and you're forcing a reboot. Long-press of the Power button should do the same thing.
I can't say I have much to offer in regards to this issue, but am I correct with my observation that everybody experiencing this issue has experienced it while their N7 was plugged into a computer of some sort for an extended period of time? Has anybody had this happen when plugged straight into the wall outlet?
Here's another update with an interesting 'twist' since my last post.
I've charged it twice in the meantime. Once was, again, overnight, and I woke up to find it powered off. A simple "on" press brought it back on.
However, on Saturday, I used it heavily and was down to about 40%, so I plugged it in around 11AM. I meant to grab it around 3PM when I went out, but forgot about it. Got home late, and went to look at it at about 11PM (12 hours later). It was charged to 100%, running off the A/C power, and still on.
This is weird, because if I leave it plugged in "overnight" for 8 hours, it will almost always turn off sometime before I grab it. But when left plugged in during the day for 12 hours, it stayed on. I wonder if it handled the situation different based on the time of the day???
I got my Nexus 7 at I/O this year and I've been happily using it for nearly a month now. I don't know if my device differs in any way from one you can get form google play other than the white back.
Last night I was plugged into my wall charger at around 14% battery and playing SongPop with my girlfriend when my screen just shut off. It was like when you hold the power button on a laptop and BOOM, everything is black. It wouldn't turn back on so I unplugged it and plugged it back in. Got a charging screen so I let it set for a bit.
I came back maybe 15 minutes later and I was at 9% battery, which was odd given I plugged into the wall at 14%. I played with the phone for maybe 30s after boot and it happened again, I saw some weird artifacts on the black screen as it quickly shut off and the speakers played an awful crackly screeching noise. Plugged it in again, came back a bit later, still at 9% and played with the device again, same issue only after a little more time.
I'm currently at work with my N7 plugged into my Galaxy Tab 10.1 charger and charging it from 0 to 16% currently. The device is on but I haven't been touching it (and I don't plan to until it's at 100%).
Has anyone else had this issue?
I cant tell if it's some way I'm touching the device that's causing it to shut down hard, some issue with the battery or charging that is causing a rapid battery drop or even a short in the way I'm holding it when it's plugged into the charger?
I don't really want to deal with ASUS warranty returns already, though I have been unable to find anyone else with the same issue through google, so I turn to you for advice and similar stories.
Mine did the same thing the second day I had it. Now it won't boot. I'm waiting for Google to send me a new one.
Sent from my ADR6400L using Tapatalk 2
Mine did something similar last night. It was at about 6% battery charge and all of a sudden the screen just went black. I went and plugged it in, but it wouldn't power on completely (the screen was on but there was nothing there). I started seeing really thin, small green lines running down the screen. I turned it off and on a couple of times, and finally it booted up. I left it plugged in for awhile, and I just took it out at work to use a bit and everything seems perfectly fine. I wonder if there are some firmware issues with the power management or something. I was all set to put in a return with Google, but it appears to be okay. I'll keep a close eye on it for the next couple of days (I've only had it for a week).
TrevSo said:
Mine did something similar last night. It was at about 6% battery charge and all of a sudden the screen just went black. I went and plugged it in, but it wouldn't power on completely (the screen was on but there was nothing there). I started seeing really thin, small green lines running down the screen. I turned it off and on a couple of times, and finally it booted up. I left it plugged in for awhile, and I just took it out at work to use a bit and everything seems perfectly fine. I wonder if there are some firmware issues with the power management or something. I was all set to put in a return with Google, but it appears to be okay. I'll keep a close eye on it for the next couple of days (I've only had it for a week).
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After leaving mine off and charging at work to 100% it seems to be working fine. I used it all last night with no issues. I haven't tried wiggling around the usb cable yet in the port to see if that caused any issues.
Firmware issues sounds about right, some sort of low battery safety feature or something? Who knows. I'll update this thread if I continue to experience problems. I'm already past my ability to return to Google so I'm in no rush to warranty to Asus and lose a development tablet.
I remember have selected an option so the battery wouldn't necessarily shut off at 0%. Now my phone shuts off at approximately 4%. Anyone remember where this option is?
Sent from my Turbo
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I recently noticed this as well and would be interested if there's a way to fix this.
It has happened to me, too. Yesterday my phone shut down at 25% and 14%, but after turning it on again I could use it normally.
I'm, obviously, also interested if there's a solution for this.
Mine has done the same thing a couple of times. It's only ever happened once the battery is less than 10% but it's still annoying. I also had one random reboot today but that was the only time that this has happened.
I could swear I had selected an option for this...but I can't find it anywhere. Does anyone recall having seen this??
Sent from my Turbo
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videtonator said:
It has happened to me, too. Yesterday my phone shut down at 25% and 14%, but after turning it on again I could use it normally.
I'm, obviously, also interested if there's a solution for this.
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I had some weirdness with this myself yesterday (my 2nd day on the phone).. I was literally laying in bed before going to sleep, marveling at my battery life after a day of heavy use (18 hours and 39% to go, SOT 3 hours) and it just shut off. I tried to turn it back on, but got the boot loader's big fat 0% screen. So I plugged into the turbo charger, and then it said 100% within a minute, I turned it back on, and then it was 85%.. Just decided to go to bed, left it plugged in all night. Took it off the charger this morning at 100%.. then over the next 2 hours it fell down to 55%. Figured the battery just needed to settle in for a couple of days. I've had it on a USB port for about 90 minutes now, and it's back to 100%. I'm going to take it off an constantly keep it between 80-100% all day. Hopefully it just needs to settle in and get some battery stats under it's belt? I've not seen this with many, or any phones before. Would suck to be out somewhere thinking I can make it to the next morning no problem, and then have my phone die 5 minutes later and I don't have a charger.
Has anyone found a solution for this issue?
i am with the same "4%" issue
It probably does that so it can already have a headstart for the turbo charging feature.
Have you guys tried re-calibrating the battery? I've experienced versions of what you describe, and here's how I fixed it on mine;
1 - plug into the turbo charger that came with it
2 - press and hold power button till unit shuts off, continue holding,
3 - continue holding till you see a battery icon on the screen, let go of the power button
4 - phone will vibrate, and a couple seconds later, the battery icon will show a % number, that is the correct level of charge in the battery, it is now re-calibrated!
5 - press and hold power button till phone starts to boot, you should be good..
From what I've read, this "out of sync" battery calibration is caused by using certain chargers other than the stock one. I saw it happen from plugging into a laptop usb3 port and an old blackberry wall wart (don't judge me). Other people have reported it from using wireless charging (I wireless charge every night without issue).
Hope this helps, good luck!
So my turbo just turned 2. For the past 6 months or so been having some weird issue. I was on RR Remix for a while, then went to CM14 by BBH27 for a while, and then back to RR, and now on ComputerFreak Stock. I don't have any issue with charging the phone. Quick charge works just fine.
I have had issues where the battery will just be dead even if it was at like 50% and confirmed charging.
I thought maybe it was my stupid charger (I have another that I have yet to test) but then last night, after charging my phone before I went to bed i unplugged it. I woke up around 6:45 to find my phone once again dead. It looks like around 2 am the battery just fell. Dead. Just gone. I go and hit the power button and i got 1%. The battery graph looks as if i turned the phone off. For the most part my battery last all day 12+ hours with some good usage too.
I'm getting ready to flash back to stock now that full stock MM is out now to flash and see if that makes any difference.
For what it's worth, my Turbo would just straight up shutdown when I was on RR. And not go through the shutdown process, just crash to a powered off state. It would happen if the battery was full, low, or anywhere in between. I don't know if that's the issue you were experiencing, but I suppose it's possible.
My daughters is having the same issue.
Anyone have a solution?
I've tried clearing caches, battery recalibration, etc.
Going to see about doing a fully clean install tomorrow if she is okay with it.
When this happens and the phone just shuts down, does the battery percentage immediately jump back up when you plug in a charging cable? I was having that problem when using wireless charging a lot. It turned out be a battery calibration issue. You can re-calibrate by holding the power button and KEEP holding it when the "Power Off" dialog pops up. The phone will eventually reboot itself then leave it overnight on the factory turbo-charger.
One warning - Since the marshmallow update, performing this procedure seems to wipeout your BT connections.
Hi guys, I have a huge problem.
Currently I'm on vacation in Croatia, where it's around 38-40 C every day. One day I had to log into an unsecured wi-fi. I know, i shouldn't have done that but it was urgent. Well, the same night (while charging) my phone turned off itself and I had to turn it back on on the next day. It worked the whole day until I opened the camera. Suddenly the phone went off and I wasn't able to turn it on. At first I thought the battery has drained so I plugged it into the original OP charger (dash). It gets warm while charging, but the LED is not turning on. After an hour of charging I still can't turn the phone on. Not even after a charging over night. There's also no vibration after holding the power button, neither holding the power-button for 20 (or more) seconds . I can't even get into recovery mode by holding volume-down and power.
I'm on original Resurrection Rom.
Is there anything else I could try? Could it be that some hardware is damaged (overheated)?
Since I'm on vacation there's currently no way for me to do any kind of unbricking until I find some phone-repair service.
I'm not a pro, but Im pretty sure the problem occur on the hardware side since the phone is not taking the charge and no vibration
I once had an Android phone (not 3t), the same thing occured, the phone I had had some hardware damage near the battery so I experienced the same problems you listed, ended up getting a new phone
Overheating is probably not the issue, at least not the 40C air temps you mentioned. These devices can probably something like 60C (internal temp at CPU or battery) before seeing any damage. Lot of folks live where it's just as hot as where you are, if not hotter. So I have to think the device is designed to work under such conditions.
Try holding the power button longer (a minute or more). I don't know about this device. But on my old HTC M8, there were instances where the phone powered off by itself. And the power button needed to be held over a minute, to make it boot. Although no charge LED is concerning.
Mine did the same a few days ago, was tethering and the phone just shut off. Buttons didn't work, no vibration, no charge LED, no anything. Thought it died but after plugging it into a PC it was detected as QHSUSB_BULK (hardbrick).
But it turned on normally after a minute lol.
Hallo. Mine also crashed. I was in the sunset playing game and taking pictures. Then phone suddenly got so warm and lagged, It turned off itself. No reaction. I connected into charger and then turned on hopefully. I think you must take care, because it has metal body and easy heating, and when heating it's lagging and not works good
My opinion is that it's overheat problem
BTslo said:
Thought it died but after plugging it into a PC it was detected as QHSUSB_BULK (hardbrick).
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You will see Qualcomm download mode message (QHSUSB_BULK) whenever the device is powered off. It needs to be powered on, at least to bootloader (or recovery or OS) for the PC to connect in any other way.
Update
After 3 days, it finally turns on and charges as expected. Don't know if it has to do anything with it, but i let it in the charger for 1 day.
but now another problem occured.
every time I press the homebutton the phone crashes and goes off. this only happenes if the fingerprintscanner is not requested.
i.e. unlocking phone with fingerprint, does not crash, but... pressimg homebutton to go back to home screen crashes.