Develop Bugs

charging/usb port problem - can't un-root

I've seen this problem mentioned before, but no good fixes.
My phone won't charge while on, but will when off. Charging has always been a little buggy, but now seems stuck this way.
The problem seems to keep my phone from connecting to the computer - neither the mac android download program will recognize the phone, nor will it charge off the computer, nor will the wugfresh tool see it when plugged into my PC.
I rooted/unlocked using the wugfresh tool (kept the stock ROM) and figure I need to warranty replace the phone - but because the computer won't recognize it, I don't know how to un-root/re-lock it.
Question - 1. anybody know how to fix my usb charging/recognition problem? 2. assuming not, is there a way to un-root/re-lock the phone without needing to plug the phone into a computer?
Thanks very much!

Does it charge with the phone on from AC? And when it's plugged up to your mac, does it have the thing in the notification bar saying its connected?
It's possible you have a bad cable, just to eliminate the easy fix first. It should charge fine with any mini USB charger.
If you can get it to charge from AC, I'd try a different computer if possible or if not maybe a re-install of the drivers.
Next, as maybe a last ditch effort, it's possible the ROM got corrupted, though I'm not sure how likely that would be. I'm sure you can get the stock ROM to flash in Clockworkmod but the only way to re-lock the bootloader that I know of requires a PC.
Maybe someone else can chime in weather or not Samsung actually cares if you're unlocked when it comes to a warranty for a hardware problem. Also, what carrier do you have? They may just give you a new phone themselves and again, maybe someone can tell you if they actually look at whether you've modded your phone.

Thanks for the reply.
Yes, when it's hooked up to an AC adapter and the phone is ON, I get no charging. When the phone is on and hooked up to a computer (both PC and mac), I get no charging. No upper right hand corner battery indicator change.
In fact, when the phone is off and hooked up to AC power, it seems to be hit-and-miss as to whether or not it actually charges.
Plugged into a computer, I get nothing - it doesn't register a device is attached at all.
I think that's a great question - if you return an un-locked phone, do they definitely get mad at you? I wonder if that's been asked in the forums before...maybe I'll make a different thread?

Also, from clockworkmod, how can I flash the original rom, as you suggested?
I've already factory re-set the phone and even flashed a different ROM just to see what would happen - and it didn't fix the charging issue.

Try this https://play.google.com/store/apps/details?id=eu.chainfire.mobileodin.pro
Sent from my Galaxy Nexus using xda premium

I literally had this exact issue over the weekend where it would charge when powered off but then the USB would completely die when the phone was turned on. All after using my incar charger. It seems the port inside the phone got bent so that the board inside was almost touching the bottom of the phone. If held flat on your palm...
I fixed it by bending the board back up with a knife so its dead in the middle of the port. No problems charging now.

this exact problem has been an issue for me as well, contacted Samsung and told them i bought it second hand and they issued a rma and sent me a ups label t send it in. This is my first phone that broke before I even had a chance to root it. I was pissed at Htc so decided to try something new. Going back to my T-Bolt for a while now.
My phone charges sometimes, others it doesnt. Sometimes the "Nintendo blow" works, other times it requires force. Eventually I can always get it to charge, but it can take a half hour of playing with it. I have multiple cables, original Samsung batteries, and lots of experience inside phones, and have never had an issue that I couldnt FULLY determine was hardware or software. Samsung claims they have never seen this issue. lol. Obviously they dont visit the forums

cymru said:
I literally had this exact issue over the weekend where it would charge when powered off but then the USB would completely die when the phone was turned on. All after using my incar charger. It seems the port inside the phone got bent so that the board inside was almost touching the bottom of the phone. If held flat on your palm...
I fixed it by bending the board back up with a knife so its dead in the middle of the port. No problems charging now.
Click to expand...
Click to collapse
great idea - i was using my car charger this weekend. i'll give it a shot.
update - i bent the little board up off the bottom, and now i can't fit the charger in it. uhoh.

This is becoming a bigger and bigger issue. Please star and/or comment on this issue: http://code.google.com/p/android/issues/detail?id=23789

I sent my galaxy to Samsung 2 weeks ago, it is due to arrive back today. They paid postage each way and the invoice says they replaced a component (no detail) and updated software and prl. I was already on the current release so not sure what to expect. But it is good to know they are taking care of us.

Possibly faulty hardware or ROM - phone thinks it's being plugged in/out constantly

Hi Guys, long time lurker and flasher, first time poster.
I've had a Galaxy Nexus for a few months, and love it. Flashed a million different roms, all is generally well.
Starting a few days ago, my phone started beeping and waking up. Upon closer inspection, it's because it thinks it is being plugged in and unplugged, up to twice a second. If phone is locked in my pocket, it wakes it up and annhilates my battery D:
Do I have a faulty motherboard/charge IC/socket? I've tried a wipe/reflash of the rom I was using, as well as a few others, and the issue persists.
It's also extremely intermittent. One minute it's spamming the plug/unplug messages, then it'll be fine for a few hours, then it'll wake up randomly, then nothing again.
Anyone else had any similar issues or have I got a dead phone? It's still under warranty, so that's good.
THANKS

A similar problem with mine started yesterday. At random times, the lock screen says it is charging when it's not plugged in. Plugging it in sometimes causes it to stop displaying "charging" and unplugging it makes it say charging again. Reboots and reflashes don't help. When I get home, I'm going to switch batteries and see if that helps, otherwise i'm thinking it's a hardware problem.
Sent from my Galaxy Nexus using Tapatalk 2

I changed batteries and it worked for several hours, but then I plugged the phone into a charger and the problem came back. I cleaned out the USB port with a brush and now the problem is gone for now, but it could easily come back later. Turns out this is a common problem and there are many thing that may help, but it may just need replaced. Some things to try:
battery pull
sim card pull
use only the "official" samsung charger
let battery drain to 0% then full charge
clean usb port with brush and/or compressed air and/or denatured alcohol on a brush with phone turned off
carefully bend the tab in the usb port upward
clear dalvik/cache etc
factory reset
repair/replacement

from most of the posts that i have read about this it seems that its most likely down one of 2 things:
1: There being dirt inside the usb post - possible solution try cleaning out with a toothbrush/ cotton bud VERY CAREFULLY
2: The pins inside of the ubs socket being bent and touching, this makes the phone think that its charging. - possible solution VERY CAREFULLY try bending the pins back into the standard position, so they aren't touching.
Hope this helps.

I've noticed this is a typical Samsung issue might gf s2 does exactly the same ....
Sent from my Galaxy Nexus using xda premium

Thanks for the tips guys, I'll give them a shot and let you know. I've got a heap of air dusters at work, and some really fine gentle toothbrushes, so hopefully it'll be all good.
I really don't want to deal with warranty claims if it's a faulty phone :'(

My problem came back last night after brushing the usb port. I looked inside the port with a magnifier and it looked like a birds nest in there. I took a dental pic and spent 20 minutes digging out gunk, spraying electric contact cleaner on a brush and brushing it out, blowing it out, and repeating. That deep cleaning seems to have worked.
Sent from my Galaxy Nexus using Tapatalk 2

That worked for me too. I used a toothpick soaked in rubbing alcohol and a can of air pulled out lots of black gunk on the contacts as well as lint. I have had plenty of android devices but surely none have ever had a problem like this. Glad to find a solution thanks.

Get a replacement!
Had the same thing happen to me unfortunately I wasn't covered under warranty.
Tried every thing and it always came back!
Got a new phone (this time nothing but the stock usb charger) and no problems yet.
Sent from my Galaxy Nexus using xda app-developers app

Bad usb..return to full stock?

Hi all, I had rooted my wife's phone months ago and off and on she started having usb problems... I finally got fed up with messing with it. (Computer would not recognize it off and on, would not charge when plugged in intermittently, would think it was plugged in when it wasn't)..the biggest thing was it would randomly go into dock mode..
So I went back to sfhubs rooted stock el29.. decided the best bet was to accept the ota to make sure it wasn't a software issue. Now her phone is in a limbo of no root access but still has Su and mobile Odin as system apps but i can not gain su access and they can't be UN installed I would like to either regain root or get back to stock the phone is under warranty and the bad usb is a known issue that doesn't rear it's ugly head until the ics update. Is there any way to fix this since I can't connect it to a computer?
Also it will not boot into Odin mode just does a regular reboot. I can get into stock recovery though..
Thanks for any help.
Sent from my SPH-D710 using Tapatalk 2

Bad USB connector
Many people have experienced this problem. It seems to be related to a dirty or corroded USB connector. Symptoms could include:
- loss of USB connection,
- "Charging paused, Voltage too high" alert,
- charging led on, even when disconnected.
- battery does not fully charge, although it indicates 100% charge,
- phone won't boot unless connected to power (charger/PC),
- Car mode activates on its own
Took my Epic Touch 4G to Sprint Store for repairs under Asurion warranty. Upon disassembly and inspection, they found traces of corrosion in the USB connector, and marked its as water damaged, even though the moisture sensor labels were Ok, This unit has never been immersed or close to a wet environment. My best guess is that the corrosion could have been caused by condensation on a poorly constructed connector.
The bottom line is that to get it replaced under warranty, I will have to pay the $100 deductible to Asurion for a refurbished unit.
To try to fix it yourself, google android central Epic 4G Touch corrosion charging port post for some suggestions (sorry, cannot post link).I did try most but was not able to get rid of the problem, but some people have.
If you still have problems and feel like attempting the repair yourself, you can purchase the USB Power Connector Board for approx $ 27 at cellphone-repair-shop dot com and search for touch-4g-micro-sd-pcb-reader-assembly-and-flex-cable (sorry again, cannot post link)
The third option would be to fork over $ 100 to Asurion,
Good luck

What about this? Power off the phone and remove the battery. Hold the power button down for a few seconds. Get some rubbing alcohol and a toothbrush with soft bristles. Pour some alcohol onto the toothbrush then give it a light shake so it's not dripping wet. Lightly brush the inside of the USB port at all angles. Don't be really rough with it. After you're done, closely blow into the port with some effort. After that, let the phone air dry for an hour before replacing the battery and powering up. Rubbing alcohol evaporates quickly but an hour is playing it safe. Don't pour it into the phone, just get the brush wet but not dripping wet.

I had the same problem...use >>> DeoxIT D100 <<< it fixed my usb port issues for good.

Galaxy Nexus giving me battery/charging problems...

A few days ago, my Nexus stopped charging while turned on.
I noticed that it still charged when the phone was off. So, I started turning it off @ night to charge it.
Well now... for some reason when I plug the phone in while it's off, it shows me the charging animation (the battery filling up), but then all of a sudden it shows a battery with a bolt running through it (im assuming this means fully charged) and then it does the animation again.
Wtf is happening??
thanks guys.

bump..

iArtisan said:
bump..
Click to expand...
Click to collapse
It sounds like the 'Ghost charging' issue. See if the small pin in the Micro USB port is touching something. Look very carefully! If so, try to bend that pin slightly up just so it doesn't touch the surrounding.
If that doesn't help. Buy a replacement port for like 6 USD. Replacing it will take you at most 15 minutes including re-assembly.

Some people reported problems with using LED controller apps like light flow and flashlight apps, try uninstalling any that you may have and see if the problem is resolved, if not then what the guy above suggested seems to be the only solution
Sent from my Galaxy Nexus using xda premium

I had something like that before ... my mobile shows it is charging while not plugged in, sometimes it wakes up and sleeps many times repeatedly as if I'm plugging but and unplugging it again ... finally I found people talking about the problem and the solution was using the original cable for charging ... if not solved yet you can do what I did, clean the micro USB port using a small brush and the last thing you can do if not solved , you can left up the micro USB pin using a thing clip, and that's what solved the problem for me ..
Sent from my Galaxy Nexus using xda app-developers app

hmm... any more input from you guys?
I did a restore so there shouldn't be any apps keeping it from charging now.

tuk1maar said:
It sounds like the 'Ghost charging' issue. See if the small pin in the Micro USB port is touching something. Look very carefully! If so, try to bend that pin slightly up just so it doesn't touch the surrounding.
If that doesn't help. Buy a replacement port for like 6 USD. Replacing it will take you at most 15 minutes including re-assembly.
Click to expand...
Click to collapse
the small pin in the phone? The one that's horizontal? how would I bend it up?

iArtisan said:
the small pin in the phone? The one that's horizontal? how would I bend it up?
Click to expand...
Click to collapse
only bend it up if you can see it touches the surrounding. Bend it up with the smallest thing you can find that fits in there. BE CAREFULL! do not use force. You need to use little power to lift it up. I myself never had this issue but I did read alot posts related to this. And lifting the horizontal pin up solved it for most of the people that sufferd from this issue.
One question: Did you ever use any charger except for the standard Galaxy Nexus charger? (Including car chargers and such)

tuk1maar said:
only bend it up if you can see it touches the surrounding. Bend it up with the smallest thing you can find that fits in there. BE CAREFULL! do not use force. You need to use little power to lift it up. I myself never had this issue but I did read alot posts related to this. And lifting the horizontal pin up solved it for most of the people that sufferd from this issue.
One question: Did you ever use any charger except for the standard Galaxy Nexus charger? (Including car chargers and such)
Click to expand...
Click to collapse
no. never. If I mess up, will replacing the charging port resolve the issue?

Bending the pin up resolve the issue for me. The problem returns back after a charge and unplug perhaps pushing the pin back into wrong position. I uninstalled lightflow app, it had no effect.
I have ordered the replacement usb port, middle cover(the usb socket seems worn out). I will post an update

sitaramp said:
Bending the pin up resolve the issue for me. The problem returns back after a charge and unplug perhaps pushing the pin back into wrong position. I uninstalled lightflow app, it had no effect.
I have ordered the replacement usb port, middle cover(the usb socket seems worn out). I will post an update
Click to expand...
Click to collapse
please do.

I think I have the same problem. I tried bending the pin, removing LED apps, various combinations of unplugging, turning off etc., and I tried changing the USB PCB in the phone to no avail. I even tried different batteries. I have absolutely no clue what the issue is. This is doing my nut in.

ibm9001 said:
I think I have the same problem. I tried bending the pin, removing LED apps, various combinations of unplugging, turning off etc., and I tried changing the USB PCB in the phone to no avail. I even tried different batteries. I have absolutely no clue what the issue is. This is doing my nut in.
Click to expand...
Click to collapse
If you have rooted your phone.. wiping battery stats in recovery mode did the trick for me.. It happened to me atleast 2-3 times.. It's not a permanent solution but just a temporary measure..Im not sure what goes on. I've only had my Gnexus for 1 month and its happened like 3 times. Really3 sucks. Anyone know if it is software related? perhaps unrooting would do the trick??

It could also be a hardware problem, it's been reported before. Following is a guide to replace the USB and charging logic board on a Galaxy Nexus (the guide is for the CDMA version, but it's very similar to a GSM version): iFixit Guide You can order the parts for the GSM version here: Replacement part.
I just ordered one because my phone keeps doing the same stupid things: sometimes it charges, sometimes it doesn't, USB connection is completely erratic and it strangely enough always shows the loading icon when it's off and connected, but doesn't actually charge the battery. Tried wiping, reflashing, restoring, switching on and off, wiggling the cable, taking another cable, readjusting the position of the USB pins - to no avail. Now I'm trying replacing the board. Wish me luck!

zyrill said:
It could also be a hardware problem, it's been reported before. Following is a guide to replace the USB and charging logic board on a Galaxy Nexus (the guide is for the CDMA version, but it's very similar to a GSM version): iFixit Guide You can order the parts for the GSM version here: Replacement part.
I just ordered one because my phone keeps doing the same stupid things: sometimes it charges, sometimes it doesn't, USB connection is completely erratic and it strangely enough always shows the loading icon when it's off and connected, but doesn't actually charge the battery. Tried wiping, reflashing, restoring, switching on and off, wiggling the cable, taking another cable, readjusting the position of the USB pins - to no avail. Now I'm trying replacing the board. Wish me luck!
Click to expand...
Click to collapse
I wish you luck… but I tried that and it didn't help, so don't get your hopes too high.
Sent from my Galaxy Nexus using xda app-developers app

My Nexus is also having the same problem. Bending the USB pins does the trick but it keep coming back.
Last night I had the same charging problem, so, I applied the same trick, but this time, it created a different problem. When I plugged the phone into my computer, it can be charged but is not recognized by Windows. Also, the headphone plug is acting funny. When a headphone is plugged, it is not detected and music still coming from the speaker. All these happened after I bent the USB pins, might be I applied too much force or might be the pins give up itself this time.
Anyhow, just order a replacement part and hope it will resolve all these problems.

I have fixed the mystery headphone problem, It was caused by the Wechat app that I have recently installed. Once I have unistalled that app, the headphone works properly.
Just waiting for the new charging port USB flex cable to resovled the "USB Deivce Not Recognized" problem.

I have a small question. Can I turn off the display backlight when the charger is connected ?How? That would be great temporary solution

I have read in other forums from people that have replaced the USB port with no results.
What I read and worked for me was to lift the small "tongue" inside the USB port towards the screen. As soon as I did it the charging animation disappear. This, of course, is most probably just a temporary fix and the problem will come back eventually. But at least it's stopped driving me crazy for a moment.
I tried plugging the charger and it charges normally, but it looks like the charger pushes the tongue back down so the "charging when not charging" problem re appeared. I pushed the tongue back up and "fixed" it again.
With this in mind one would think that changing the port would fix the problems but people have reported the opposite :/
BTW, I am using the original charger, although, I have used many other chargers with this phone

Hi,
I had the same problem of ghost charging, it started with phone not charging when connected to charger and then randomly showing charging...
Now discovered it causes vbus_tuna_otg wake lock in Bette battery stats and high system usage in setting> battery, basically not letting the phone go to deep sleep, causing battery drain.
Any way to fix this. ?
Sent from my Galaxy Nexus using Tapatalk 2

Major Battery Issues

Hello everyone,
I have a major issue regarding battery.
Here is a rundown of what has happened.
1. There was moisture detected at first by the sensor and there was in fact moisture there after I plugged in my usb charger in and saw water around the usb-c connector. This was due to humidity most likely as I live in NJ.
2. I cleaned it out with a cue tip at first and nothing changed. Plugged my usb charger back in to see if water was around it which it was not obviously.
3. Left my phone on overnight and then the Icon went away but, I could not charge my phone anymore despite their being no notification showing me that the phone was incapable of being charged because of "x" reason. I also made sure to use a shop vacuum to remove any other residue inside the phone.
4. Turned my phone off and then I was finally able to charge it.
5. Turned it back on and then the issue I have now is happening along with the fact, when I use my charger that came with the phone, I get a notification that I should use the charger that came with phone if I want it to charge faster....
Not only that but, to get it to charge occassionally I had to turn airplane mode on and THEN it would charge. This is spotty because it works sometimes, sometimes it doesn't.
Today I hit a breakthrough. After doing a factory reset (that literally did not change anything at all. Same problem, despite everyone at reddit suggesting a factory reset) I loaded my back up file that I created before the factory reset and *poof* the issues described above vanished.
However. When I put my phone into airplane mode and turned it off (tried to mimic the most successful variables that allowed me to use the phone without issue) and then plugged a my usb cable in, it charged no problem. Then when I turned the phone back on, the evil bleeping and screen dimmer of death came back on.
I am not up for a loaner phone and I can not wait 2 weeks for a new phone seeing as I work and people are always calling me.
Recommendations?

What do I do if no one responds?
Bump?

Not sure what else you can do. Sounds like the port got shorted out partially. I suggest grabbing a Qi charger and going that route in the interim, that should work without issue, unless the circuit on the board is the issue and not the USB port. I assume you are using a different chable/charger than the one that was wet?

Davetheboss said:
Hello everyone,
I have a major issue regarding battery.
Here is a rundown of what has happened.
1. There was moisture detected at first by the sensor and there was in fact moisture there after I plugged in my usb charger in and saw water around the usb-c connector. This was due to humidity most likely as I live in NJ.
2. I cleaned it out with a cue tip at first and nothing changed. Plugged my usb charger back in to see if water was around it which it was not obviously.
3. Left my phone on overnight and then the Icon went away but, I could not charge my phone anymore despite their being no notification showing me that the phone was incapable of being charged because of "x" reason. I also made sure to use a shop vacuum to remove any other residue inside the phone.
4. Turned my phone off and then I was finally able to charge it.
5. Turned it back on and then the issue I have now is happening along with the fact, when I use my charger that came with the phone, I get a notification that I should use the charger that came with phone if I want it to charge faster....
Not only that but, to get it to charge occassionally I had to turn airplane mode on and THEN it would charge. This is spotty because it works sometimes, sometimes it doesn't.
Today I hit a breakthrough. After doing a factory reset (that literally did not change anything at all. Same problem, despite everyone at reddit suggesting a factory reset) I loaded my back up file that I created before the factory reset and *poof* the issues described above vanished.
However. When I put my phone into airplane mode and turned it off (tried to mimic the most successful variables that allowed me to use the phone without issue) and then plugged a my usb cable in, it charged no problem. Then when I turned the phone back on, the evil bleeping and screen dimmer of death came back on.
I am not up for a loaner phone and I can not wait 2 weeks for a new phone seeing as I work and people are always calling me.
Recommendations?
Click to expand...
Click to collapse
Try leaving your phone all night in Rice. The rice absorbs moisture from the phones when they fall into the water.