Database Users

Phone almost Died!

Hey Guys!
So this morning I almost had a heart attack. I left my phone connected to the charger overnight and when I woke up this morning it wouldn't respond! The power button did not work and I couldn't unlock the phone or even put it on silent. The touchscreen froze up or something. I tried removing the battery but no luck. So I had to factory reset the phone, now it works but I lost my apps/widgets and customizations
Any idea why this happened? I don't want it happening again.

Proteus27 said:
Hey Guys!
So this morning I almost had a heart attack. I left my phone connected to the charger overnight and when I woke up this morning it wouldn't respond! The power button did not work and I couldn't unlock the phone or even put it on silent. The touchscreen froze up or something. I tried removing the battery but no luck. So I had to factory reset the phone, now it works but I lost my apps/widgets and customizations
Any idea why this happened? I don't want it happening again.
Click to expand...
Click to collapse
Any recent changes to the phone software-wise? New widgets, Launcher, or something like that? How far in the boot process did you get after the battery pull? Did the animation start, etc?
If you're running clockwork recovery (and you should be! ) then I would have tried wiping cache and dalvik-cache (if you didn't) first before resorting to a full factory wipe.

I'm running stock. The only change I made the night before was the wallpaper. After battery pull it would go to the lock screen, except it wouldn't respond at all not even the power button would respond. T
I want to root the phone but I've been having USB problems. The cable I have apparently doesn't allow transfer of data so I orderd an OEM cable that I'm still waiting on.

The cable is just a cable, never heard of a cable that wouldn't allow data to be transfer... And the problems you told seems to be hardware issues and to me It sounds like you have a faulty phone, you should just replace it.
Sent from my Nexus S using XDA App

I can't... bought it off of eBay. I was told to get another cable, some other people seemed to have that problem and a new cable fixed the problem.

Proteus27 said:
I can't... bought it off of eBay. I was told to get another cable, some other people seemed to have that problem and a new cable fixed the problem.
Click to expand...
Click to collapse
i can actually vouch this is true, my brother had a G2 and i used my usb cable to transfer data, nothing. then i got the white one that came with the phone and it worked.

gratti said:
The cable is just a cable, never heard of a cable that wouldn't allow data to be transfer...
Click to expand...
Click to collapse
I've used cables with some pins shorted (in effect disabling data transfer), for a generally faster charging experience. I've owned a few cables bought from everywhere and some doesn't allow for data transfer especially cheap ones I picked up from eerie places.
In any case, if he was using the cable that came in with the phone, I'm pretty sure it is data-enabled unless he pulled it hard enough to damage the data line. That OR he doesn't have the correct drivers installed.

Well, lets just hope its a cable issue & not a hardware issue. Let us know how it goes.
Sent from my Nexus S using XDA App

Same happened with myphone after some app updates (think it was Google earth). Tried restart multiple times without any luck. Then I changed my sim and it worked magically this time!
Came back to my original sim and everything was fine after that.
Sent from my Nexus S using XDA App

I tried taking the sim in and out, didn't help.
After factory reset its working really great now. I'm assuming it was an app or something. Sucks how I lost everything though.
I'm still waiting on the OEM USB. Just to let you know, the USB cable I have lets the phone charge, when I connect it to my MBP or any other computer but there is no option to go into USB mode on the phone and its not detected by the laptop.
I did manage to transfer music using a very great app that I bought, AirSync. Just wirelessly transferred my music over so the USB not being able to transfer data isn't to much of a big deal anymore.

UPDATE:
So I just received an OEM cable and charger. IT WORKS!
I can finally connect my MBP to my Nexus S.
Next step: Root

[Q] Nexus 7 wont turn on!!! Making a very small buzzing sound.

Ever since 2 days ago, my Nexus 7 has not been able to turn on. I have tried holding the volume down button and the power button multiple times, tried that while plugging it in, tried it after waiting for several hours of it being plugged in, and even popped off the back cover to unplug and replug the battery. I tried holding the power button for more then a minute. I have tried everything. One thing I did notice when I took the back cover off is when the battery is plugged in, I can hear a vary faint buzzing sound that appears to be coming from the top of the tablet above the battery area. Not sure what it could be. Wondering if anyone has any recommendations to help me? Thanks!

Bump.
Sent from my Nexus 4 using xda app-developers app

It might help if you could provide more details...
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Such as...
Prior to your current predicament.... did the device just crash? ... or was it simply dead from power on?
What was the battery charge level? (If you can remember).
Were you rooted? Running a custom ROM? ...or stock?
Have you flashed any custom kernels? ...and if so, which?
What happens when you plug in the charger? What do you see?
What happens when you connect the N7 to your computer?
Have you tried booting into the BOOTLOADER (cf. http://forum.xda-developers.com/showthread.php?t=2133986).
---------------------
The more details you can provide, the more likely somebody will be able to offer a diagnosis, and hopefully a solution.
Rgrds,
Ged.

Last time I checked was the battery was reading 51%. It was during a sleep mode and I tried to wake it up again. I am unlocked and rooted. ParanoidAndroid 3.16 and FrancoKernel r60. I have tried all key combinations with the buttons to get it to turn on. Nothing shows on the screen. Not a flicker. Nothing happens when I plug it in. Loading into the bootloader, nothing happens. The only thing I notice is when it gets power (from either the battery or the charger), a small buzzing sound comes from the top area above the battery. That is it. Tried re-setting the battery connector with no success. Charger does not help in any form. Thank you!

Read my thread:
http://forum.xda-developers.com/showthread.php?p=36493547#post36493547
I bet your issue is addressed there.
Good luck.
-bk

I actually used your forum first before I looked into other possibilities. Unfortunately, the issue still persists. I feel this one is out for the count. DEAD!!! haha too bad. I really liked it!

Sorry to hear that. Since you followed all of my recommendations, chances are your N7 really needs to be returned. Bummer.

maybe need to be returned

Nexus 7 won't turn on

My wife's Nexus 7 suddenly won't turn on... It still had juice when she went to charge it, but the next day found it was totally dead.
I've tried different chargers, tried to get to the bootloader, opened it and unplugged the battery, hooked it up via USB to my computer, etc and nothing will get this thing to power on.
Any ideas?

Bozz5384 said:
My wife's Nexus 7 suddenly won't turn on... It still had juice when she went to charge it, but the next day found it was totally dead.
I've tried different chargers, tried to get to the bootloader, opened it and unplugged the battery, hooked it up via USB to my computer, etc and nothing will get this thing to power on.
Any ideas?
Click to expand...
Click to collapse
I mean, how long did you leave it on AC power? I know when I drain mine since coming to KitKat, it takes as long as a half an hour to respond again.

kcipopnevets said:
I mean, how long did you leave it on AC power? I know when I drain mine since coming to KitKat, it takes as long as a half an hour to respond again.
Click to expand...
Click to collapse
Sorry, it spent more than a day on the charger. Still nothing, cannot get it to respond at all.

Bozz5384 said:
Sorry, it spent more than a day on the charger. Still nothing, cannot get it to respond at all.
Click to expand...
Click to collapse
If you haven't already, try holding the power button for a while until *hopefully* the Google splash appears.
A good way to tell if the device is accepting a current is by using a charger that can verify this somehow, like with an embedded LED. One like this: http://www.verizonwireless.com/accessories/rapid-wall-charger-with-6-ft-cable-for-micro-usb/
I used this for my HTC Rezound when it still worked to make sure it was taking a charge because it would report it was charging in the OS but the charger module itself reported otherwise (the red Verizon ring didn't illuminate unless the charger was positioned a certain way in the device thus this was the only way I could supply it a charge and not hope it wasn't dead in the morning). When my Nexus 7 is drained, it draws enough voltage to get the charger to illuminate so maybe try one of these to really make sure it's still responding.
For the meanwhile, if you do decide to buy one, what was the last thing you/your wife had done? Was there root access?

U need press power for 2 min and need to be pluget into wall
Sent from my Nexus 7 using XDA Free mobile app

kcipopnevets said:
If you haven't already, try holding the power button for a while until *hopefully* the Google splash appears.
A good way to tell if the device is accepting a current is by using a charger that can verify this somehow, like with an embedded LED. One like this: http://www.verizonwireless.com/accessories/rapid-wall-charger-with-6-ft-cable-for-micro-usb/
I used this for my HTC Rezound when it still worked to make sure it was taking a charge because it would report it was charging in the OS but the charger module itself reported otherwise (the red Verizon ring didn't illuminate unless the charger was positioned a certain way in the device thus this was the only way I could supply it a charge and not hope it wasn't dead in the morning). When my Nexus 7 is drained, it draws enough voltage to get the charger to illuminate so maybe try one of these to really make sure it's still responding.
For the meanwhile, if you do decide to buy one, what was the last thing you/your wife had done? Was there root access?
Click to expand...
Click to collapse
Interesting about the charger -- don't think I have one that does that. Maybe I'll see if my VZW store has one, not sure yet.
She had just used her tablet as normal, and plugged it in like she does every other day or so -- the next morning grabbed it and went to work only to find out that it was dead. IE: not turning on.
- No root access (totally stock)
- I've tried holding the power button for up to 2 mins. - nothing
- Even tried holding the down volume and power for up to 2 mins. together - nothing
- Removed the back and unplugged the battery (plug was really tight) and left it undone for 5 mins and reconnected - nothing
- When plugging in to a USB on the computer, the computer dings like I connected something but - nothing
Perhaps I'll take it apart again and see if I can get a voltage reading on the battery with my multimeter... didn't do that before, but would be good to know if it is charged and not turning on or what.

Bozz5384 said:
Interesting about the charger -- don't think I have one that does that. Maybe I'll see if my VZW store has one, not sure yet.
She had just used her tablet as normal, and plugged it in like she does every other day or so -- the next morning grabbed it and went to work only to find out that it was dead. IE: not turning on.
- No root access (totally stock)
- I've tried holding the power button for up to 2 mins. - nothing
- Even tried holding the down volume and power for up to 2 mins. together - nothing
- Removed the back and unplugged the battery (plug was really tight) and left it undone for 5 mins and reconnected - nothing
- When plugging in to a USB on the computer, the computer dings like I connected something but - nothing
Perhaps I'll take it apart again and see if I can get a voltage reading on the battery with my multimeter... didn't do that before, but would be good to know if it is charged and not turning on or what.
Click to expand...
Click to collapse
Remove the back cover, locate the plug to the battery, disconnect plug by sliding from right to left, then replug. Should be fine after that.

player90247 said:
Remove the back cover, locate the plug to the battery, disconnect plug by sliding from right to left, then replug. Should be fine after that.
Click to expand...
Click to collapse
Thanks but I already did that. Nothing changed. If I don't get it going soon I'll be forced to buy something else as she is getting impatient.

I have the same issue.
I bought a refurbish one and it was working great for 2 days and yesterday when I tried to open it, it won't turn on anymore and I was able to browse on it 5 min before.
I tried everything but I cannot find any solution...
When I plug into a wall I cannot see the charging icon and when I plug it into my computer it will do the noise that a device is plug but nothing happen... I wonder if its the battery that is crap

pacostrano said:
I have the same issue.
I bought a refurbish one and it was working great for 2 days and yesterday when I tried to open it, it won't turn on anymore and I was able to browse on it 5 min before.
I tried everything but I cannot find any solution...
When I plug into a wall I cannot see the charging icon and when I plug it into my computer it will do the noise that a device is plug but nothing happen... I wonder if its the battery that is crap
Click to expand...
Click to collapse
I own 3 of these N7 tablets and this has been the number one issue. Sent one for repair when it was under warranty. The supplied Nexus wall charger burn out quick, and aftermarket cables last only 3 months. I've had better results using the Samsung wall charger and cable.

OP, it sounds like your wife's N7 is in APX mode. Connect it to your PC via a USB cable, and open Control Panel's devices and printers panel. If it sees an APX device, and you didn't make NVFlash blobs, your only recourse is a motherboard replacement.

exglynco said:
OP, it sounds like your wife's N7 is in APX mode. Connect it to your PC via a USB cable, and open Control Panel's devices and printers panel. If it sees an APX device, and you didn't make NVFlash blobs, your only recourse is a motherboard replacement.
Click to expand...
Click to collapse
Well, that sounds interesting. Tell me more about the APX device thing. I didn't quite understand.

new nexus 7 2012
Me0211 said:
Well, that sounds interesting. Tell me more about the APX device thing. I didn't quite understand.
Click to expand...
Click to collapse
I just got my new N7 32gb GSM 2012 in the mail today. Won't turn on at all. I'm not going to bother. Going to return it. Quite disappointed, as I didnt realized this issue (apparently with the battery) was so common. Was looking forward to flashing cyanogenmod. Poop. Might just get a samsung tab now, which I think is quite overpriced for its specs.

horsegold said:
I just got my new N7 32gb GSM 2012 in the mail today. Won't turn on at all. I'm not going to bother. Going to return it. Quite disappointed, as I didnt realized this issue (apparently with the battery) was so common. Was looking forward to flashing cyanogenmod. Poop. Might just get a samsung tab now, which I think is quite overpriced for its specs.
Click to expand...
Click to collapse
If you're seriously looking for something other than an N7 then I'd suggest you look at the LG G-Pad.
I bought one for my Dad at Christmas and was amazed by how good the screen is, and the tablet generally, for the price. The LG skin is minimal and can be changed obviously with another launcher, and the battery life is better than my N7.

MY Nexus 7 does not start nor charge

Hi there
Apologies in advance if someone already posted this, but Im too tired of searching more!
Well, long story short.
My brother got me to root a nexus 7 2012 model.
As I tried, I found out it was already rooted. So started to Unroot+Stock it using WugFresh Nexus toolkit.
During the process, it stopped giving updates and the N7 was in Bootloader.
I tried booting it up but it would say 'Boot failed' and bring me back to to bootlader. I tried several times before powering it off.
Now the N7 does not turn on.
I have tried all the button combinations and timings up to 1 minute.
Even leaving it on charge.
HALEP BOLEEZE! (Help please!)

Stick-sama said:
Now the N7 does not turn on.
I have tried all the button combinations and timings up to 1 minute.
Even leaving it on charge.
Click to expand...
Click to collapse
Just switched the batteries with my fully working Nexus 7, results:
My N7 turns on perfectly fine and charges with own battery.
My N7 with her battery did not turn on or charge
Her N7 with my battery did not turn on or charges.
When I put my battery back into mine, it turns on right away - no problems.
I guess her tablet is as good as dead?

If the tablet won't fire up with a known good battery, it's likely toast. You could try swapping the motherboard as well, in case the display is dead. If the motherboard from the dead tablet works in yours then you know where the second problem is.
I have had to reseat my USB daughterboard a few times when dealing with charging issues, but that wouldn't explain the refusal to start when supplied with a fully charged battery.
Sent from my XT1064 using Tapatalk

How To Revive Nexus 7 2012 Tried Everything Nothing Works?

My Nexus 7 2012 suddenly died, trying to use after a long time. It was stuck at loading so I wiped cache and it booted fine was very slow and sort of felt stuck so I rebooted and it never powered on again. It doesnt even show charging battery sign when plugged in. I tried everything nothing worked.
1) Pushed the power button for a minute and combination of other buttons as well
2) Left the battery for charging for hours at least 24 hours
3 Tried charging battery manually by removing it (like mentioned in many youtube videos etc)
I thought battery died but if I connect a small bulb to the battery it works fine, so I do not think battery is dead. What should I do? PC doesnt recognize it but if I plug it in the PC usb port and try to power on the tablet it does make a sound when something is connected to the PC but nothing shows up and it never charges.
What do you think it is? How should I fix this?

anyone?

I think the motherboard has died. The solution is a motherboard replacement.

I was given a Nexus 7 (2012) that had the same problem. The procedure in this video fixed it. Take note that there are two cells in the battery, two red wires and two black wires, you need to charge both cells. I made up a double lead and charged them both at the same time from a Samsung 1.0 amp charger, no problems. The unit now charges to 100% and works fine.
Forum wouldn't let me post a link. Search youtube for "Nexus 7 dead" and check the video by Doug Peng. Worked like a charm for me.

mannesty said:
I was given a Nexus 7 (2012) that had the same problem. The procedure in this video fixed it. Take note that there are two cells in the battery, two red wires and two black wires, you need to charge both cells. I made up a double lead and charged them both at the same time from a Samsung 1.0 amp charger, no problems. The unit now charges to 100% and works fine.
Forum wouldn't let me post a link. Search youtube for "Nexus 7 dead" and check the video by Doug Peng. Worked like a charm for me.
Click to expand...
Click to collapse
Hi, mannesty...
I've found this link...
...but here, Doug Peng talks about the Nexus 7 2013 model, the successor to the original Nexus 7 2012, so I'm dubious how much of what he says can be applied to the OP's original 1st generation Nexus 7.
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My view, is that I think the OP's device is hardbricked, with a corrupted or erased bootloader.
From his/her more recent post...
https://forum.xda-developers.com/nexus-7/help/figured-reviving-nexus-7-blob-files-t3983203
This is also highly suggestive of it too...
NexusAd said:
...It doesnt even show charging battery sign when plugged in...
Click to expand...
Click to collapse
The charging battery animation, with the device in a powered off state, is part of the bootloader. It's failure to appear strongly suggests the bootloader is corrupted/overwritten/erased and the device thereby hardbricked, and the only tenable solution is a motherboard replacement, as a previous poster here has suggested.
Having said all of that though, it couldn't hurt to have a tinker around with the battery ~ and maybe Doug Peng might have something useful that just might work.
Rgrds,
Ged.
Sent from my moto g(6) using XDA Labs

NexusAd said:
My Nexus 7 2012 suddenly died, trying to use after a long time. It was stuck at loading so I wiped cache and it booted fine was very slow and sort of felt stuck so I rebooted and it never powered on again. It doesnt even show charging battery sign when plugged in. I tried everything nothing worked.
1) Pushed the power button for a minute and combination of other buttons as well
2) Left the battery for charging for hours at least 24 hours
3 Tried charging battery manually by removing it (like mentioned in many youtube videos etc)
I thought battery died but if I connect a small bulb to the battery it works fine, so I do not think battery is dead. What should I do? PC doesnt recognize it but if I plug it in the PC usb port and try to power on the tablet it does make a sound when something is connected to the PC but nothing shows up and it never charges.
What do you think it is? How should I fix this?
Click to expand...
Click to collapse
If your device is still bricked, go check out my guide on How to unbrick.