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.

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

[Q] Phone says that it's always charging?

I don't know how to go about this, because, to my knowledge, its not effecting the phone in any way. Maybe a little drain, but that could be 4.2's problem. But regardless, my phone is always "on charge" no matter where I am. On any ROM this happens, so I know its a physical thing. I've been told that you can use a knife to push the contact up a little, but that only works until I plug it back in the next day. So...... Any thoughts on how to fix this without replacing the charging port? (To my knowledge, that involves soldering very small parts.)

jcoinster said:
I don't know how to go about this, because, to my knowledge, its not effecting the phone in any way. Maybe a little drain, but that could be 4.2's problem. But regardless, my phone is always "on charge" no matter where I am. On any ROM this happens, so I know its a physical thing. I've been told that you can use a knife to push the contact up a little, but that only works until I plug it back in the next day. So...... Any thoughts on how to fix this without replacing the charging port? (To my knowledge, that involves soldering very small parts.)
Click to expand...
Click to collapse
Well if it worked by bending the contacts up but goes back when you plug it in. Have you tried a different cable? Also have you cleaned out your charging port?
(Phone side and cable side)
Sent from my SPH-D710 using xda premium

g_ding84 said:
Well if it worked by bending the contacts up but goes back when you plug it in. Have you tried a different cable? Also have you cleaned out your charging port?
(Phone side and cable side)
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
I already tried clearing the ports and I tried other wires. Hell. I dont even charge my phone using a wire! I charge them using a battery charger.

Corrosion on charge port can cause this as did happen to mine
Sent from an Apple killing JellyBean

moparfreak426 said:
Corrosion on charge port can cause this as did happen to mine
Sent from an Apple killing JellyBean
Click to expand...
Click to collapse
Agreed. At this point you could be having issues where you can't see it, such as where the port is connected to the board.

Had to take port completely off before i noticed... Sprayed with acid (not recommended) and cleaned it, rinsed it, soldered back in place = good to go..... For now
Sent from an Apple killing JellyBean

jcoinster said:
I don't know how to go about this, because, to my knowledge, its not effecting the phone in any way. Maybe a little drain, but that could be 4.2's problem. But regardless, my phone is always "on charge" no matter where I am. On any ROM this happens, so I know its a physical thing. I've been told that you can use a knife to push the contact up a little, but that only works until I plug it back in the next day. So...... Any thoughts on how to fix this without replacing the charging port? (To my knowledge, that involves soldering very small parts.)
Click to expand...
Click to collapse
If you need to repair it go the this site. http://mobiletechvideos.mybigcommerce.com/samsung-epic-4g-touch-usb-port-repair/
You send it to them and they will fix it.
Turn around time is normally 5 to 7 days.

I mean. I guess i'll use it until it breaks. And even then, I use an external battery charger. So. Yeah....

Yeah i fixed mine.... I always end up fixing all my electronic problems... But i lost my charger so i still use a battery wall charger... Used my brothers charger to test my fix
Sent from an Apple killing JellyBean

Hi jeep, i have a similar problem but i'm not sure it's the same, i happened a few days ago when myi changed the battery and pugged in the charger, i noticed there was something strange, the phone's screen showed the battery was charging before i pugged in back (just when i placed the new battery). Now it behaves as it's always plugged in charging just when placing the battery in, the phones is turned off and the screen shows charging battery icon (i've tried 2 more batteries), and also there's no usb connection to the PC either.
It's a very bothering problem, the phons won't go into deep sleep, and the screen goes to the screensaver all the time (as it where pugged in charging)...
I always repair my own electronics, months ago i replaced the power button, do you think it could be a bootloader issue or just the micro-usb port?; when you fixed yours, do you think i should take it completely off and resolder?
Any advice will be really appreciated!!
Thanks

moparfreak426 said:
Yeah i fixed mine.... I always end up fixing all my electronic problems... But i lost my charger so i still use a battery wall charger... Used my brothers charger to test my fix
Sent from an Apple killing JellyBean
Click to expand...
Click to collapse
Hi, i have a similar problem but i'm not sure it's the same, i happened a few days ago when myi changed the battery and pugged in the charger, i noticed there was something strange, the phone's screen showed the battery was charging before i pugged in back (just when i placed the new battery). Now it behaves as it's always plugged in charging just when placing the battery in, the phones is turned off and the screen shows charging battery icon (i've tried 2 more batteries), and also there's no usb connection to the PC either.
It's a very bothering problem, the phons won't go into deep sleep, and the screen goes to the screensaver all the time (as it where pugged in charging)...
I always repair my own electronics, months ago i replaced the power button, do you think it could be a bootloader issue or just the micro-usb port?; when you fixed yours, do you think i should take it completely off and resolder?
Any advice will be really appreciated!!
Thanks

Note 2 charging complete randomness - bad port?

Hey guys:
I'm an IT tech and I'm really confused on this one. Started happening a week or 2 ago. I'd be charging my phone and it'd randomly cut out. I run Carbon ROM and have the notification light set to be a solid yellow when charging so I know if it's charging or not. It would happen very infrequently, but would cut out. I'd unplug and replug and it would be fine for the most part. It's gotten progressively worse. I was running NEAK kernel so I tried to go back to stock Carbon trinity kernel, same problem. The other day my phone would also randomly go in and out of "car mode" too which was weird. Currently, I have it plugged into my computer so it's charging in USB mode (lower voltage) and as of right now it's holding charge. But prior to last rebooot it was going on,off,on,off with the charge. Today my phone has locked up a few times when plugged into a full AC charger even. Seems to be completely random right now. I'm just looking for any advice. Going to flash a different ROM and see if that does anything. If not, what part would I need to order? I saw a Youtube instructional video on how to replace USB port and I'd be willing to do that. I bought my phone off Craigslist and have had it for like 6 months. No proof of purchase, which you need for Samsung warranties right? The battery is not "swollen" in the middle. Oh, also this morning, when it was going in,out,in,out,in,out constantly (on full AC charger), i could actually HEAR the (official Samsung) charger resetting itself almost, in sync with when the charge would cut out, if that makes sense. I could actually hear the charger making a "click" everytime it would lose charge then it would try charging again, and would click off again, over and over. Lastly, today I also saw in settings->battery it saying "charging" even though the charge light on my phone was off AND i saw it drop a percentage so it wasn't actually charging. VERY random. Maybe clear battery stats? Doubt that'd do anything... I have CWRP on my phone...
Any thoughts at all on this or if you've seen this would be great. Likely new USB port needed. Where to buy? If new ROM does not fix, it must have to be replaced. That's all I can think of....

Currently, it is holding a charge. I re-installed NEAK kernel, and set the AC charging to 1000 instead of the default of 1700. This happens though. When it seems to be holding, it's fine until I unplug and try later and then all the randomness begins. No idea what to think of it. Don't even know if setting to 1000 had anything to do with it working, likely not....

Didn't see it mentioned. Have you tried a different cable or even a different charger? Would do that before changing a usb port on the phone. Doesn't sound like the port if you are able to charge via a PC USB.
Sent from my SGH-I317 using XDA Premium 4 mobile app

Questions and help issues go in Q&A and Help section
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FNM

Device charges really slowly - 0.1A - 0.4A

Hi everyone!
I'm investigating charging issue with A70 Europe version.
Bought used one with stock ROM, then unlocked and installed crDroid based on android 10.
Additional modules: Magisk, EdXposed, FakeGapps, MicroG
Apparently after ~1-2 years it started charging really slowly.
(Used orignal adapter and cable) So I thought it was broken and changed it.
It didn't help
I recently moved to LineageOS 20 straight from crDroid.
Issue persisted and I was annoyed with it so much that I checked charging parameters with Wattz app from f-droid.
With different cables and adapters I'm able to achieve Max 0.4 A with 2A charger.
Where in most cases it is 0.1A with 1.5A charger
I got it to the cell phone repair where I said I suspect that it may be the port as it stopped transferring any data.
They fixed port but charging issue persisted.
In that moment I decided to try fix it myself.
I opened the phone and changed battery as it was also discharging fast.
It didn't help.
I started reading some similar threads here.
So what is left:
- change the tape that connects main board with port (it is said to be a common issue on samsung device)
- reflash stock rom and see what happens there.
what do you think?
do you need any pictures of the phone or other details?
Thanks in advance!

UPDATE:
Device is A705FN
Did both.
Changed ribbon cable that connects main board with port and flashed stock ROM based on android 11.
Disabled adaptive charging in settings.
But it didn't help.
This could mean that it is some other hardware issue but I'm run out of ideas...
Other observation:
Measuring Watts:
(Stock charger) When I power on the phone, drain is ~10W till it enters offline charging mode or system is on, then it stays exactly 0.5W ! I'm not sure if it is charging. When system is powered it says no.
To compare with my msm8998 based Sony Xperia ~10W till it enters offline charging mode, then it stays at something like 4.6W with 1.5A charger.
Both tested while charging above 90%
I'm totally pissed of. I put money to repair it but nothing seems to work.
I'm sure about one thing - I'll never ever buy any other samsung smartphone.

This sounds like a charging board issue from the very beginning. Charging problems do happen on this phone sometimes but usually just reseating the ribbon cable is enough to make it work again. Perhaps some chip has failed, though this happens much more rarely.