Nexus 7 power on problem - Nexus 7 Q&A, Help & Troubleshooting

Hello. My Nexus 7 is rooted. Not sure if this started before or after I rooted it, but when I power it on, it takes holding down the power button upwards of 20 seconds before it starts.
Any ideas?
Sent from my Nexus 7 using Tapatalk 2

Anyone else experiencing this problem?
Sent from my Nexus 7 using Tapatalk 2

This is usually caused when your battery gets drained fully. Also, it can be caused by system lockups etc.
Its nothing to worry about, but if it happens every time, I would take a closer look at whats going on with your tab, as everytime aint normal.

Related

[Q] Question regarding battery

I noticed that my nexus 7 automatically shuts down when the battery level is at around 12-14%. Is this normal? Does the nexus 7 have some sort of automatic shutdown feature to prevent battery depletion? If yes, is there a way to edit that option?
Thanks!
Does it?? Im stock rooted and the lowest I got mine to was 5% I'll give it ago today and hammer the battery see if mine shuts down
Sent from my Nexus 7 using Tapatalk 2
I can see the battery go down to 1% before auto-shutdown.
Stock, rooted, 4.1.1
Must be a problem with my unit then. I'll try to tinker with and see what's the problem.
Sent from my Nexus 7 using Tapatalk 2
Have you done a few full charge cycles since you got the N7?
i.e. fully discharge till it doesnt even power on into bootloader, then (while power off) charge to 100% in one sitting.
Repeat.
Do that a couple of times.
Im gonna try that. Thanks!
Sent from my Nexus 7 using Tapatalk 2

Random reboots anyone else?

I'm having some random reboots, they are hot reboots not full. Anyone else having the same problem? I'm completely stock and no rogue apps that I'm aware of. It has happened a few times last 20 mins while browsing on xda app. Thanks
Sent from my Nexus 4 using xda app-developers app
znc62511 said:
I'm having some random reboots, they are hot reboots not full. Anyone else having the same problem? I'm completely stock and no rogue apps that I'm aware of. It has happened a few times last 20 mins while browsing on xda app. Thanks
Sent from my Nexus 4 using xda app-developers app
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Must either be bad silicone, or a bad rogue app... You can try a factory reset and try again! Also this needs to be in the Q&A section, this is not a general topic.
I had it reboot after I took a picture, then I swiped to left to see the picture while in camera mode. Zoomed in on the picture, heard some screeching sounds (probably from auto focus of camera?) and then it rebooted.
I hasn't tried to reproduce it, but I do hear the screeching once in a while if I go into picture view from camera mode.
I have had random reboots with my nexus 7 on 4.2, so I think it's more of a software issue than anything else.
Sent from my Nexus 7 using xda premium
I've just had one full reboot when watching a you tube clip. Nothing to worry about unless it happens frequently. I haven't owned a phone that hasn't rebooted or frozen at some point.
Sent from my Nexus 4 using Tapatalk 2
I've had about 4 restarts since getting it yesterday. Also happens on my Nexus 7. Thinking it may be an app on my google account but my Nexus 4 is pretty much stock.. Not sure what it is.
Have gotten it on the nexus 7 once but not on the nexus 4.
It is just 4.2 bugs supposedly. I am sure it will be fixed.
sent via xda premium with nexus 7
No reboots here.
Sent from my Nexus 4 using xda premium
Thanks everyone, just seeing if I was the only one.
Sent from my Nexus 4 using xda app-developers app
I have random reboots. As of yesterday, my phone rebooted 3 times. This morning I woke up, luckily before my alarm normally goes off, and notices my phone screen was on, but nothing was actually on the screen. I pressed the power button a few times and nothing happened. I unplugged the phone from the charger, tried it again, and notice the screen flicker, and then reboot. This morning it's already rebooted once.
Most of the time I was in Google Play Store, so I cleared the cache and data, and let it update to the newest version, so hopefully that fixes it. I sure hope I don't have a lemon. I really hope that the phone acting weird doesn't happen again, I can't afford to miss my alarm going off.
Mine has turned off on me twice since I got it. I think I was using bluetooth both times, but I can't be sure. Anyways, the Galaxy Nexus had issues like this when it first came out and the new Windows Phones have rebooting issues as well. I think Google rushed Android 4.2 out, but I'm sure everything will be stable after another OTA or two. That's the worst and best part about having a Nexus. You get brand new software first, so you sometimes feel like a beta tester, but you also get the fixes extremely quickly.
Glad I'm not the only one having random reboots. My n4 has rebooted twice this morning (within 2hrs). One hot and one cold.
Sent from my Nexus 4 using Tapatalk 2
+1 random hot reboots on my nexus 7 stock rooted 4.2. Happening at least 4-5 times a day, its becoming somewhat tedious now
no reboots so far :fingers-crossed:
I've had 1 random reboot while watching a YouTube video.
Sent from my Nexus 4 using Tapatalk 2
it seems there is some issue with android, not just now.. because the same thing happen a lot on the nexus 7 and Gnex.
aceo07 said:
I had it reboot after I took a picture, then I swiped to left to see the picture while in camera mode. Zoomed in on the picture, heard some screeching sounds (probably from auto focus of camera?) and then it rebooted.
I hasn't tried to reproduce it, but I do hear the screeching once in a while if I go into picture view from camera mode.
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Same happened to me today but i wasnt able to recreate issue.
I heard some screeching sound and then screen frozen and there it rebooted.
But after that i tryed to take pictures and i heard that screeching again but it not rebooted.
This was my frist time that Nexus 4 rebooted.
So
Software or Hardware issue?
I didn't have a reboot but shut off. First time yesterday and had the phone since Nov 20th. It wouldn't turn back on, not even charge .. Took maybe 30mins then it turned on. I was just texting, put the phone down.. Screen shutoff, wanted to text again and nothing. I have it unlocked and rooted only.. Stock everything.
Sent from my Nexus 4
4.2.2 just random rebooted
My nexus 4 now on 4.2.2 just randomly rebooted for the 1st time.
I 'm dissapointed. Waited for this OTA for a couple months now for it to just fix this issue and it's still here? :/
I just can't be angry at the device cause i 'm absolutely in love with it. Best device ever made and 4.2.1 (and 4.2.2) are amazingly consistent and stable, but for this issue.
pff just hope that we don't have to wait till KLP for this to be worked out.

Fix for power on?

So I have the issue where once powered down the power button takes minutes upon minutes to register a push and power on. Is their a fix floating around here or anything coming soon or do I have to exchange my N7?
sent from my Nexus 7 while my SGS3 rests!
I'm having the same problem, haven't found anything myself either.
Sent from my Nexus 7 using xda premium
Hold the power button. down for 30 seconds. It just happened to me and android central forum users said this worked. It did!

Phone doesn't turn on!

Hey everyone
I'm running stock 4.3
Yesterday I turned off my phone with around 60 percent of the battery left
And today morning its not turning on! I tried connecting to the charger but no response!
Someone help, please!
Sent from my Nexus 4
Try booting into the bootloader and rebooting from there. Hold volume down and power, then if/when the bootloader comes up use power to select start.
Tried that too. No response at all from phone.
Sent from my Nexus 4
Bump.....
Sent from my Nexus 4
With the device completely off just press and hold volume up and down, it should take you to download mode.
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Did anything happen?
Sent from my Nexus 4 using Tapatalk 4

New Nexus 7 reboot in every one week or two.

it was JSS15R.
Does anyone has the same problem?
Sent from my Nexus 7 using xda app-developers app
I wish...
This update took mine from a reboot occasionally while asleep to multiple reboots a day while in a waking state.
I've seen this too (sitting on table face up and the X animation starts displaying)...and sometimes it'll drain all power overnight, so you have to plug it in and reboot it.
I suspect a lot of people don't notice it because they have a case on it...
has already happened to me twice in the last hour....
是的,我的平板也会自动重启
一开始我认为是软件兼容性问题,后来卸载了一部分软件,发现还是会重启!!WHY ?
Might be related to the flaky battery level sensor is what I'm guessing:
http://forum.xda-developers.com/showthread.php?t=2492186
jiangshiyi said:
一开始我认为是软件兼容性问题,后来卸载了一部分软件,发现还是会重启!!WHY ?
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说英文啊哥们,BTW,你的N7现在还会重启么?我刷了很多rom都没用,只要播放视频就重启,烦死了。
Mine reboots 5-6 times a day
Sent from my Nexus 7 using xda app-developers app
I had a random reboot problem, wifi issues, etc., for a long time, and it seems like they've both fixed themselves after my last wipe back to stock. No idea what changed.

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