yashsingh1/xdaforums huggingface dataset:
[Nexus 7 Q&A, Help & Troubleshooting] pepperbreath:
Solved! (at least for me)

I suspected this was hardware for a while since this issue would happen no matter what ROM was on there and no matter how many times I did a factory reset. Knowing that I'm just out of warranty and that Asus would probably charge me a hefty fee for fix it, I figured I had nothing to lose. Read my own thread on the issue to see what troubleshooting steps I had already tried here: http://xdaforums.com/showthread.php?t=2390222

Anyway, I took the back off and then removed the battery (the connection was fine btw). I removed the three screws that held the speakers in place. Then, suspecting that the small connections might need to be rewet, I plugged in my soldering iron and rewet the following areas in black (image borrowed from iAppleDev as I forgot to take my own) :

For insurance, I also folded up a small piece of paper and placed it where the blue box is. Screwing the speakers back in place held the paper in place and held the ribbon cable retainer clip against the connectors, giving a stronger connection.

I turned off my Nexus 7 with a 9% battery and then when to take care of other things. Came back in an hour or so (probably less) and I see that the battery is already at 33%! This is with the Asus charger plugged in, which wasn't working at all previously.

Very stoked. Kinda bummed I didn't figure this out before a conference I had to go to last week. Would have been nice to read on my Nexus 7 instead of my phone.
[Nexus 7 Q&A, Help & Troubleshooting] rmm200:
Blame lead-free solder. I hate that stuff. I will never give up the real lead based solder.
[Nexus 7 Q&A, Help & Troubleshooting] mrhomiec:
so i've noticed recently, that charging will vary from night to night now.

when i first noticed issues about a week ago, an overnight charge of about 7 hours would not fully charge from 10%.

but recently, i would wake up to a fully charged battery, and other nights, a half charge battery.

not sure what's going on now. and this is all from a powered off perspective.
[Nexus 7 Q&A, Help & Troubleshooting] ianmedina:
Check my video... Im sure it's working. =) plug in and plug out for about 3 to 5 times.
[Nexus 7 Q&A, Help & Troubleshooting] mrhomiec:
I already tried that at first. It wasn't doing anything. I ended up ordering a higher output wall charger from monoprice. Supposed to arrive this week...
[Nexus 7 Q&A, Help & Troubleshooting] klimane:
Nexus 7 charging solved

Was starting to have charging problem. Increasing and taking more than 10 hours, replaced charging cable with a Nokia cable with 10cm lenght I had stored, guess what? 2 hours fully charged to 100%. My Nexus 7 rocks again!!!!
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
I also tried with that short Nokia cable...

The result? Even slower charging.
[Nexus 7 Q&A, Help & Troubleshooting] Seanus86:
Had same problem

Mine was the same it wouldent charge all of a sudden so i sent it back to where i got it from and they sent it back 2 weeks later. I could now charge it but it would of taken days/weeks to fully charge the device so i tried a spare samsung charger from a phone and now it works fine. I can now do a full charge in a couple of hours so i guess the stock charger was the problem.
[Nexus 7 Q&A, Help & Troubleshooting] xbt-:
Must be a bad battery because mine goes from 0 to full charge in under an hour.
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
That's physically and logically impossible.

The battery is a 4325mAh, and the charger's max output is 2A. Putting the math together, it takes a bit over two hours for a full charge (usually 2 and a half, since the tablet is turned on).

For your statement, you'd have to be using a charger with over 4325mA output and it would destroy the battery with a single charge.
[Nexus 7 Q&A, Help & Troubleshooting] najaboy:
Much more would have to fall in line for that tall tale. The PMIC of the tablet would have to be defective, as well as the charger. The charger, cable, and tablet would all be hot to the touch- to the point that plastic would deform and the battery would be toast.
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
I just saw the thread's title got changed...

Too bad not everyone has a soldering kit or is skilled enough with it for this kind of procedure.

I'll just be taking it to the place where I bought it every time it starts to act up on me. :P
[Nexus 7 Q&A, Help & Troubleshooting] Nate2:
Could you post some charging logs like I did here? http://xdaforums.com/showthread.php?p=43146879

The logs can be output to a text file via an option you can turn on in this app: https://play.google.com/store/apps/details?id=ccc71.bmw
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
Maybe he changed his battery to a <2Ah one :P

That's the only explanation...
[Nexus 7 Q&A, Help & Troubleshooting] mpsantiago:
This seems to have worked for me. I reflowed just the 4 big solder points and my time-to-full dropped from 7hrs to 3. Oddly, the problem appeared exactly when I updated to 4.3... coincidence? I guess so.
[Nexus 7 Q&A, Help & Troubleshooting] ktylife:
Nexus 7 back from RMA at ASUS; They change the "IO cable", probably the one in the previous picture in blue. Problem solved !
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
[MENTION=3245058]ktylife[/MENTION]: I did that too, but they changed the USB thing in whole.

The first charge was alright, but then it went downhill again...
[Nexus 7 Q&A, Help & Troubleshooting] Nate2:
My 2012 Nexus 7 is taking 6 hours to charge from 15% to 100% again, using original Asus cable and 2A Asus charger :(

2013/09/07|05:26:05 PM|-431mA|14%|3707mV|34.8ºC|.1885|2
2013/09/07|05:36:05 PM|375mA|16%|3779mV|33.2ºC|.0|1
2013/09/07|05:46:05 PM|647mA|19%|3792mV|32.4ºC|.0|1
2013/09/07|05:56:05 PM|582mA|21%|3803mV|32.1ºC|.0|1
2013/09/07|06:06:05 PM|646mA|23%|3815mV|31.9ºC|.0|1
2013/09/07|06:16:05 PM|840mA|27%|3822mV|31.5ºC|.0|1
2013/09/07|06:26:05 PM|714mA|29%|3826mV|30.8ºC|.0|1
2013/09/07|06:36:05 PM|647mA|31%|3830mV|30.2ºC|.0|1
2013/09/07|06:46:05 PM|581mA|34%|3833mV|29.8ºC|.0|1
2013/09/07|06:56:05 PM|609mA|36%|3838mV|29.5ºC|.0|1
2013/09/07|07:06:05 PM|582mA|38%|3843mV|29.8ºC|.0|1
2013/09/07|07:16:05 PM|647mA|41%|3849mV|30.2ºC|.0|1
2013/09/07|07:26:05 PM|595mA|43%|3856mV|30.6ºC|.0|1
2013/09/07|07:36:05 PM|582mA|45%|3863mV|31.1ºC|.0|1
2013/09/07|07:46:05 PM|813mA|49%|3872mV|31.5ºC|.0|1
2013/09/07|07:56:05 PM|621mA|51%|3882mV|31.9ºC|.0|1
2013/09/07|08:06:05 PM|560mA|53%|3889mV|32.1ºC|.0|1
2013/09/07|08:16:05 PM|591mA|56%|3908mV|31.5ºC|.0|1
2013/09/07|08:26:05 PM|776mA|59%|3926mV|30.9ºC|.0|1
2013/09/07|08:36:05 PM|690mA|61%|3941mV|30.4ºC|.0|1
2013/09/07|08:46:05 PM|582mA|63%|3953mV|29.9ºC|.0|1
2013/09/07|08:56:05 PM|595mA|66%|3965mV|30.2ºC|.0|1
2013/09/07|09:06:05 PM|582mA|68%|3977mV|30.6ºC|.0|1
2013/09/07|09:16:05 PM|767mA|71%|3990mV|31.0ºC|.0|1
2013/09/07|09:26:05 PM|582mA|73%|4004mV|31.3ºC|.0|1
2013/09/07|09:36:05 PM|603mA|76%|4020mV|31.5ºC|.0|1
2013/09/07|09:46:05 PM|625mA|78%|4035mV|31.0ºC|.848|1
2013/09/07|09:56:05 PM|776mA|81%|4052mV|30.4ºC|.0|1
2013/09/07|10:06:05 PM|683mA|85%|4072mV|29.9ºC|.0|1
2013/09/07|10:16:05 PM|776mA|87%|4091mV|29.4ºC|.0|1
2013/09/07|10:26:05 PM|595mA|89%|4113mV|29.7ºC|.0|1
2013/09/07|10:36:05 PM|582mA|91%|4133mV|29.9ºC|.0|1
2013/09/07|10:46:05 PM|603mA|94%|4153mV|30.0ºC|.0|1
2013/09/07|10:56:05 PM|603mA|96%|4171mV|30.1ºC|.0|1
2013/09/07|11:06:05 PM|539mA|98%|4181mV|30.1ºC|.0|1
2013/09/07|11:16:05 PM|431mA|99%|4186mV|30.1ºC|.0|1
2013/09/07|11:26:05 PM|346mA|100%|4191mV|30.0ºC|.0|1
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
Yeah, we're all facing that issue, bud.

Seems like the only way to get it fixed is either RMA-ing it or soldering the pieces together.
[Nexus 7 Q&A, Help & Troubleshooting] UltraXUX:
My nexus 7 is taking 7 to charge from empty to 100%
[Nexus 7 Q&A, Help & Troubleshooting] hhwong:
I used to be able to keep it plugged in and read on it all day without getting a dent on the battery %.....

now I have it plugged it, screen off, and it is still freaking draining.......stock charger stock cable.......

I have to completely turn it off to actually charge, and it would stil ltake forever......

So far, I have left it on the charger for around 24 hours now, 49% and i started from 3%.........

I am seriously thinking about selling this crap...... :(
[Nexus 7 Q&A, Help & Troubleshooting] :
mine was doing that before and found it to be a faulty usb cable. try using a different cable you might get better results
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
Well in most cases, it's not a faulty cable, but a faulty device, as I see it...
[Nexus 7 Q&A, Help & Troubleshooting] jfmcbrayer:
No doubt that's the case for some people, but I think the way to troubleshoot, in order of decreasing probability and increasing cost is: faulty cable, faulty charger, faulty device. Mine was a faulty charger.
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
Mine is a device.

Took it to RMA, but they only replaced the battery. Would be suspicious if I took it back after a week...

Is also scratched, so no way of selling it (for a good price anyways).

Anyone know a way to melt this thing without looking too suspicious?
[Nexus 7 Q&A, Help & Troubleshooting] RedsFan75:
This was my problem. Replaced the cable and I was fine afterward.
[Nexus 7 Q&A, Help & Troubleshooting] ganeshp:
after lots of troubleshoot and hitting on the air to solve the slow charging issue on my nexus 7

this solution perfectly worked for me ...

guess im still not at the hardware level issue yet :)
[Nexus 7 Q&A, Help & Troubleshooting] ianmedina:
Or you can also try the plug in and plug out for 5 times, just make sure that you're charging it via ac, you can check that on battery icon. =)
[Nexus 7 Q&A, Help & Troubleshooting] klimane:
Charging time

ebay item 181225042053 worked for me
[Nexus 7 Q&A, Help & Troubleshooting] eturk01:
ianmedina, my friend, you're a genius!

- My nexus 7 2012 has gotten so bad, it was on the charger 4 hours and barely charged. Battery Monitor Widget showed the problem: Getting only up to about 500mA and then dropping, up and down, bouncing.

- I plugged into my PC usb for about 5 min. Then right over to stock Asus wall charger: I saw current draw reported as high as 1800mA. It's back to charging fast like new. THANKS!

A picture's worth a thousand words. Check out the bouncing low amps and then the massive jump:

https://www.dropbox.com/s/2ibn4hez5h434pd/Screenshot_2013-11-22-15-45-40.png
[Nexus 7 Q&A, Help & Troubleshooting] sandozer:
Slow charging fixed at last

This has been a problem for me for several months, the unit was taking over 24 hours to charge. I opened the back, tried the battery connector in and out/, checked solder joints but couldnt find any improvement. Then I got serious and started measuring charge current with the Charger Doctor, found it was charging at around 25ma ! !

This worked for me, the micro usb casing had expanded with repeated cable insertion, so I gently closed the connector shell to give a much better grab on the usb plug.

My Nexus now charges at around 620ma, problem solved.:good:
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
620mA is still WAY under what you're supposed to be getting. The charger is rated for 2A.

I just keep mine in from 5PM to 6AM and hope it got over 50%...
[Nexus 7 Q&A, Help & Troubleshooting] sandozer:
Well 600ma will charge from zero to full charge in something around 6 hours, before it would take 24 hours or more to get 50% ! I can live with it now.
[Nexus 7 Q&A, Help & Troubleshooting] Fuzzra:
If poor contact seems to have been the cause you can probably improve things further by using a small and non conductive tool to very gently root out any impacted fluff, then swab the contacts with some isopropanol.
[Nexus 7 Q&A, Help & Troubleshooting] YayYouFixedIt:
where or what is charger doctor? looking for it.
[Nexus 7 Q&A, Help & Troubleshooting] YayYouFixedIt:
I looked at mine and it appears the USB port is severed. Android tuner shows a negative flow. I guess that puts my N 7 to rest. Careful with your USB ports people. ATTACH CHARGE CABLE TO adapter or OTG cable to preserve it perhaps??
[Nexus 7 Q&A, Help & Troubleshooting] LuckySwitz:
I'm also experiencing this since I bought my Nexus 7.. But I think I figured out how to resolve this issue.. I just only changed my USB cable (Samsung S2 cable to be exact) and still the stock adaptor of N7.. My charging time is about less than 4hrs from 0-100%..
[Nexus 7 Q&A, Help & Troubleshooting] andyro2008:
Please! Update the image!
[Nexus 7 Q&A, Help & Troubleshooting] emanlee:
fix for nexus 7 slow/not charging

FIXED!!!

and i didnt wait for google to solve it. they take ages.

as one of the pioneers of this thread, trust me i have tried everything, and started solutions you can see if you back track a bit.

what does not work/or temporary works but not permanent:

>OS downgrading

>bootloader upgrading

>plug unplug with battery monitor (temporary)

>reseating battery cable

>changing chargers/cables/using OEM

>all else above

what works:

>dock

from what i observe, some symptoms of failure started prior to kitkat, as to some of the nexus' handled to me. and some kitkat dont have it.

and the dock works. led me to conclude it might be hardware, probably with the USB

THE FIX:

OPEN YOUR NEXUS 7 AND RESEAT THE USB CHARGING PORT FROM THE INSIDE. if you do not know how, this video will guide you:

youtube(dot)com/watch?v=m5FagzLdbbM

as you can see the 4:07 in the video is the most important, remove the usb port/audio port completely and reseat it, place it back tightly.

my tab was left at 0% charge, unable to charge anymore, so i was left with the option to tinker it. which to my delight, it charges now at 500-900mah. i tried to drain it and charge again charging-recharging 3 times before posting it here to make sure it was not sheer luck, and so it did.

its a hardware problem guys. i just wish google/asus had the courage to admit it rather than we find it ourselves. go ahead try it. post if it works

for you. it worked for me.
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
I've got it randomly working without reseating the microUSB module. I just took a screwdriver and made very small and gentle turns. Got the same result as you.
[Nexus 7 Q&A, Help & Troubleshooting] emanlee:
hard choice

lucky for you. i was hesitant at first so i did that. but to no avail. i was suspecting it, so i had to really open it up. but nonetheless, this solution proved to be a hardware issue. not kitkat as people had been saying.
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
I've had this since 4.2.

The real solution is to do some soldering... That brings you back to the full 2A.
[Nexus 7 Q&A, Help & Troubleshooting] Captain Sweatpants:
Fastboot erase bootloader let them try to diagnose that:D

Programming is a race between engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
Erase the bootloader? That's possible?

Though, is there not a way to reflash the bootloader? I'm sure those idiots would find a way to somehow bring my old tablet back. :I
[Nexus 7 Q&A, Help & Troubleshooting] Captain Sweatpants:
Yea you can restore the bootloader with a blob.bin backup that is unique to each device without a premade backup its the one command that will irrevocably brick a nexus

Programming is a race between engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.
[Nexus 7 Q&A, Help & Troubleshooting] daniel199751:
spooky issue

Hey..i know its a bit late to reply on this topic but I ran into an issue recently .. I left my nexus 7 to charge last night while it was turned off .. When I left it to charge it had about less the 20% battery left .. So I wokle up today and all of a sudden my nexus doesn't want to turn on .. So I plugged in the charger and started charging it again , it was showing the filong battery animation , so I left it to charge in a thought that something spooky must have happened because no way the battery drained .. I did not touch it for the whole night .. It was charging that's it .. Anyways .. After about 45 minutes I was able to tiurn on my device and when it finally booted up it had 31% battery .. I was like 0_0 I mean I left it to charge for the whole night .. Damn.. I do have warranty on it but before I go and give it away so they will fix it .. I koinda want to know ewhat the hell is wrong .. After all I do have to explain to them ..

Its an nexus 7 2012 with 3G (but no Sim ATM) with android 4.4.2 stock , rooted .. My kernel is Franco kernel the latest version .. If someone would be able to help me to figure out what the hell is happening I would be very great full

Sincerely Daniel
[Nexus 7 Q&A, Help & Troubleshooting] matale0:
mine on kitkat samsung s4 is going at 460mA

OEM charger

when used with S3 oem it jumps to 800mA

even s4 is 2.0A 5V

and s3 1A chargers 4V
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
1. something's wrong with those chargers. Afaik, every phone's charger output should be 5V (correct me if I'm wrong here)

2. This is the N7 section.
[Nexus 7 Q&A, Help & Troubleshooting] Captain Sweatpants:
Wrong section for Samsung but be careful with that charger I had a charger that suddenly put out 15v it fried my n7 and I needed a new motherboard, USB port and battery.

Programming is a race between engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.
[Nexus 7 Q&A, Help & Troubleshooting] KnightStar:
So I've had this issue ever since I accidentally dropped my tablet from the nightstand with the wall charger still plugged in. It fell and landed at a weird angle that may have distorted the port. It no longer charges through the wall but still does through USB. While that takes forever, why does it still charge through USB? I can use the very same cable and use a USB wall adapter and it doesn't charge.
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
I don't get how we're expected to know what the cause of your issue is.
[Nexus 7 Q&A, Help & Troubleshooting] KnightStar:
Well, I was just hoping someone would at least have some insight into the whole charges only through a computer and not a wall charger. All I can really say that for $200, I shouldn't expect a mighty durable tablet. It just occurred to me as odd.
[Nexus 7 Q&A, Help & Troubleshooting] maxthebuilder:
Wow!

Very strange. My charger was plugged in for weeks in the same socket and suddenly the Nexus stopped charging. I reversed the plug and it started to charge!

Android tuner reported 0uA battery flow before - now it's 2600uA!

Reversed it back - still good! Less flow, 1500uA but still..

Reversed again.. Now its -2uA!!!!

Clearly, it's Android thing.

Thanks!

max
[Nexus 7 Q&A, Help & Troubleshooting] jfmcbrayer:
I suspect your wall charger may have fried. Have you tried it with multiple chargers to see?
[Nexus 7 Q&A, Help & Troubleshooting] gildas_nc:
help on soldering

I tried quite a lot of things and still have the issue with charging.

you lead me to the right thread or tutorial to try the soldering solution?

thanks and regards
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
http://xdaforums.com/showpost.php?p=44533871&postcount=121

As always, be careful :P
[Nexus 7 Q&A, Help & Troubleshooting] gildas_nc:
Well thanks but in fact what i miss is thé picture of thé part that needs soldering. It is not on the post anymore.

Anywhere i can find dit?
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
Weird it was there for me the last time :IO

[MENTION=2861348]pepperbreath[/MENTION] Would you be so kind as to direct us to the photo?
[Nexus 7 Q&A, Help & Troubleshooting] kkh5:
I am now experiencing this problem, anybody had any success with a complete restore from factory images? Just wanted to know before I start the whole process.

Thanks,

kkh5
[Nexus 7 Q&A, Help & Troubleshooting] someone755:
The issue is very rarely a software bug.

Make a backup and try a factory restore, at least you'll find out whether it's a software or hardware issue (that said, if the issue repeats/persists, it's obviously a hardware one).
[HTC Sensation XL] tonycrew:
Hi im currently on

Android 2.3.5

HTC Sence 3.5

Software 1.0.5.401.4

And am a little confused as to what to update to...?

Just want Root and latest Android version if possible.
[HTC Sensation XL] anders3408:
Then you will need :

Unlock bootloader via htcdev

flash a recovery

root phone

not needed but most safe way :

flash s-off that fits your hboot version

then go into my thread for the Runnymede AIO tool there is a guide for doing it, and two links to two diffrence rom that will be the most safest way to flash them before flashing a custom rom.

aftter that you can go into dev section and download a sense 4 or sense 4.1 rom , then you will have the newest edition for our phone.

Everything can be done from my tool, just not flashing rom :)
[HTC Sensation XL] tonycrew:
Thanks for the help.

Now running RunElite ICS 4.0.4 Sense 4.1 BETA v1.5
[Xperia Play Themes and Apps] ozzmanj1:
Just downloaded and played this, touchscreen only (blech) but the graphics, sounds and effects are awesone and it plays smooth on our phone. Lets email the dev and ask if they can optimize... this game is awesome.....

Email address: ggss_01@shade.co.jp

Market Link:

https://play.google.com/store/apps/details?id=net.gree.android.pf.greeapp57201a

Video of Gameplay: http://www.youtube.com/watch?v=oW_oPQSggZA

and here: http://www.youtube.com/watch?v=04w6zoC3VvU

Lets see if we cant get this optimized... because it would be awesome to have this with touchpads, trigger and gamepad support, or at least GAMEKEYBOARD.... :0
[Xperia Play Themes and Apps] ozzmanj1:
Dont know whose been giving my threads 1 *, and not just mine... but seriously.. how about you take the time to look for games for others to enjoy instead of pasting 1 * on peoples threads.....
[Xperia Play Themes and Apps] ozzmanj1:
Re: ScareSoul..... not XPO - Plays like Devil May Cry

Just used gamekeyboard and set the default common devices to xperiapay-touchscreen. And the game was working great with the dpad and button. Nice and fluid
[Xperia Play Themes and Apps] brsingr:
Re: ScareSoul..... not XPO - Plays like Devil May Cry

Seems fun..however it crashes right after finishing the critical hit tutorial :(
[Xperia Play Themes and Apps] LegionTHEFecalExcretion:
So I just spent some time with this game after reading your post, and its definitely a keeper! This was a nice consolation prize after all the problems I have been having DMC4 Refrain. It has devil may cry's gameplay exactly with exception of there being no d-pad. The main character looks like ezio with a pallet swap and a mouth on his stomach. The Graphics are gorgeous. I enjoyed this game much better with gamekeyboard, heres a link if anyone wants it. Ozzmanj1, how did you set up your gamekeyboard profile? Mine's like this:

http://www34.zippyshare.com/v/39901826/file.html

Square = Attack

Cross = Dash

Triangle = Critical

Dpad left/right = weapon change

Square then immediately circle = Finisher

The soul orbs seem to collect even if you don't tap on them.

I have the exact same problem on my Galaxy S 3, but not on my R800X.

Heres a video I shot showing ScareSoul played with gamekeyboard:

[YOUTUBE]n6rjGudmOOg[/YOUTUBE]
[Xperia Play Themes and Apps] ozzmanj1:
Re: ScareSoul..... not XPO - Plays like Devil May Cry

You know what... I am still really new to gamekeyboard. There's a listing for preconfigured settings and I chose the xperia play is = to touchscreen. And the game worked. I am still trying to figure out to get GK to work. Without that preconfigured settings I probably would not be able to play with dpad. Sorry I can't tell you more.... just played with the preconfigured stuff.