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Problem: don't recognize charger & don't go in USB mode!

I've a problem after (more than one) firmware update....
My P970 don't recognize recognize charger & don't go in USB mode (PC don't view the SD card)
I try CM7 and Nova, I also have a brick after flashed a kernel Nova in a Rom stock.
After that I put a new Rom stock v10c by KDZ but now have this terrible problem....
How can I solve it....?
Many thanks

have you tried to do an hard reset?

interdan said:
have you tried to do an hard reset?
Click to expand...
Click to collapse
Yes by enter in the hidden menu (3845#*970#) but nothing change....

I have the same problem since 2 months. I'm currently with the last temasek Kang release, kernel nova 11c.
The only way to charge correctly the battery is to wait the phone self extinction, by low battery, wait around 10 minutes, and plug the charger. Another weird thing: when I plug the shut down phone to sector, it will autoboot (everytime).
Else, when I try to charge the phone, 2 different behaviours:
1) most of time it charges anyway, but not detected as charging. The phone overheat, and could self extinct because of that. Time of use with a battery charged like that is very poor.
2) sometimes, nothing happen. No charge.
I'm very bored by this bug.
Sent from my LG-P970 using XDA App

gornog said:
I have the same problem since 2 months. I'm currently with the last temasek Kang release, kernel nova 11c.
The only way to charge correctly the battery is to wait the phone self extinction, by low battery, wait around 10 minutes, and plug the charger. Another weird thing: when I plug the shut down phone to sector, it will autoboot (everytime).
Else, when I try to charge the phone, 2 different behaviours:
1) most of time it charges anyway, but not detected as charging. The phone overheat, and could self extinct because of that. Time of use with a battery charged like that is very poor.
2) sometimes, nothing happen. No charge.
I'm very bored by this bug.
Sent from my LG-P970 using XDA App
Click to expand...
Click to collapse
Check your USB cables, the pins inside. As well as the USB connector on the phone itself. Use a different cable. I/we never had this kind of problem (not charging so it isn't a bug or something but rather hardware problem. If not USB, battery problem.
If not, do a full wipe and reflash the KANGed RC0. If problems persists, revert to Froyo stock so you could test. I'm after the warranty for you if you still have the problem in Froyo.
That auto reboot is well known for CM7. Again, this also is not a bug but a feature.

gabwerkz said:
Check your USB cables, the pins inside. As well as the USB connector on the phone itself. Use a different cable.
Click to expand...
Click to collapse
Checked with 3 different cables and several chargers (including original ones). Phone USB connector seems OK, but cannot really check it.
gabwerkz said:
battery problem.
Click to expand...
Click to collapse
2 batteries. Reproducible.
gabwerkz said:
If not, do a full wipe and reflash the KANGed RC0. If problems persists, revert to Froyo stock so you could test.
Click to expand...
Click to collapse
Did full wipes several times, but no effect. It's hard to go back to stock Froyo without phone-to-computer connection, and I don't want to loose ability to root my OB after that.
gabwerkz said:
That auto reboot [...] is not a bug but a feature.
Click to expand...
Click to collapse
OK
Anyway, thanks for all. If we are only few people with this bug, it seems to be a material failure indeed.
I may look for the warranty, but as I changed country (from EU to Canada), it will be quite complicated, and I need my phone :/. Just a (stupid) idea, maybe the phone didn't support the 110V, after 220V charging usage (but charger should support these 2 voltages).

If not, do a full wipe and reflash the KANGed RC0. If problems persists, revert to Froyo stock so you could test. I'm after the warranty for you if you still have the problem in Froyo.
Click to expand...
Click to collapse
I come back to v10b europe, across a lot of wipe....
Fortunatly the charger was recognized....
The problem was't "don't charge" but "not recognized"
Unfortunately today try to flash the Quasar kernel, and now I have the same problem.....
The charger, charge, but don't recognized and the USB to PC don't work's.....!!!

Turn phone off
Remove battery
Wait 10 seconds
Put battery back.
Turn phone on

I had this issue on my Optimus Black with stock Froyo rom.
My symptoms were:
- device recognized as 'modem' in Windows but no option in Android to switch into "USB Mode". Phone update software would still recognise phone was connected and I could run a firmware recovery using LG tools. Reflashed and reset to factory many times didn't fix the issue.
- if phone switched off and plugged into charger or USB would go into "SW Upgrade" mode
- I could force "USB mode" to appear on the phone by opening the hidden menu and switching the USB to "AP Mode" I think it was.
- I found the USB connections would disconnect after a period of time and sometimes the "AP mode" workaround wouldn't work.
- tried different cables, chargers and PCs and all present the same problems.
- having the battery unplugged for an extended period would get the phone working temporarily but the problem would come back after a short while.
Eventually got on to LG Support and sent it off for repair. They replaced the motherboard as faulty.
I think the problem may have been caused by a faulty car charger that I have since replaced, but ultimately replacing the motherboard on the phone fixed the problem.
If your phone is covered under warranty, I'd be sending it off for repair as it is probably a hardware issue.

brownowski said:
I had this issue on my Optimus Black with stock Froyo rom.
My symptoms were:
- device recognized as 'modem' in Windows but no option in Android to switch into "USB Mode". Phone update software would still recognise phone was connected and I could run a firmware recovery using LG tools. Reflashed and reset to factory many times didn't fix the issue.
- if phone switched off and plugged into charger or USB would go into "SW Upgrade" mode
- I could force "USB mode" to appear on the phone by opening the hidden menu and switching the USB to "AP Mode" I think it was.
- I found the USB connections would disconnect after a period of time and sometimes the "AP mode" workaround wouldn't work.
- tried different cables, chargers and PCs and all present the same problems.
- having the battery unplugged for an extended period would get the phone working temporarily but the problem would come back after a short while.
Eventually got on to LG Support and sent it off for repair. They replaced the motherboard as faulty.
I think the problem may have been caused by a faulty car charger that I have since replaced, but ultimately replacing the motherboard on the phone fixed the problem.
If your phone is covered under warranty, I'd be sending it off for repair as it is probably a hardware issue.
Click to expand...
Click to collapse
All of my thanks.....
I've the same problems.... All as you described!!!!
So after Christmas time, I'll go to an LG support!

problem found
I own a celular repair shop in baja california mex. and resently some one brougth a LG Optimus Black p970 with same simptoms ,heat,no power no usb conectiviti and chargin problems I found a conector on the inside part of the device with some visual damage (over heat) plastic melted just a minimun part of it so i check the hole conector and I found that two conections were lost by the overheat problem
this is coused by the charging conection bad design
Ask no Problem

I'm having same problem as stated by others. This is annoying me.
Its just been 2 months I've got this phone and it feels real bad to face such problems so soon.
Am facing problems like. I connected my phone to PC via USB and it showed me the option to Turn on Mass Storage, I clicked on it and it showed me the Mass Storage Drive on my PC too. But in just minute or two it disconnected on its own and SD Card started scanning and again it got connected by its own but then after that it disconnected again and it on pc it started to install drivers again. Which were already installed like 5 or 6 of them.
I formatted the phone twice. Removed the battery for around 5-6 minutes. Used like 4 USB cables. Installed LGE drivers from LGE Software updater.
This is so bad.

What software are you guys using? Which ROM?

I've also been experiencing this situation, one time this problem caused a loss of all my SD data! (my sd card got corrupted)
I'm on Zeus V6.11 right now, and I must say that USB storage is working great for me in CWM Recovery, even though it doesn't work on my phone when it's turned on in Android.
How to check whether it's an hardware problem in my phone, or just a fault of my compuer?

Experiencing this problem for around two months now. I suspect my charger to be damaged. Since I can charge the phone via the USB port. When I try to charge the phone via the charger it doesn't respond, but when I pull it off the charger the phone will boot. Had the motherboard already replaced by LG service center, but the problem wasn't solved.
The phone can connect to PC without any problems. PC can connect to mass storage.
So now, I'm using a Corby II charger and it seems to do a great job at charging my OB

N00BY0815 said:
What software are you guys using? Which ROM?
Click to expand...
Click to collapse
Currently I'm using Stock Root v20b rom.
No software's nothing, as I stated I even formatted my phone twice.
It was working well around 2 days back. I had just plugged my usb cable to phone via pc and then all of a sudden the phone started acting weird, like it was connecting and disconnecting frequently, and then it started to install the LGE drivers by itself, which were already installed didn't even touch them nor uninstalled anything.
Tried using Sony Xperia Neo V's USB cable too, but no luck.

Once I lost my USB cable.
then i brought a cheap uUSB cable. Icud transfer data from PC, but charging rate was really very SLOW... nearly 4hr.!!
Now i replaced it with new Original one, n every thing working Perfect...

I am seeing the same problems - charger is not recognized and USB mode is not working. Different cables / chargers, different Win7 and Ubuntu PCs.
I formerly used a rooted V20o from here, with which the problem first appeared, now I went over to Zeus 6.22, which still shows the same problems.
I believe the hardware is faulty.
Can anybody help me how to regain warranty? I have the stock V20o (unrooted), but since USB does not work, I cannot flash it the regular way. Is it possible now to flash from sd card?

Try with LG standard update software, you have the emergency menu....

If you want to viwe your sd card try the Samba Filesharing app. I have the same problem on cm7 and with this App i can see my SD Card

[Q] Galaxy S PLUS don't charge

First of all, excuse my poor English.
Yesterday I went to charge my SGS +, but the phone don't want charge.
I tested 2 wall chargers and official USB cable.
a) With the phone turned off and the battery attached, when I connect the cable (Wall or USB), I can't see the big picture of the battery charging. The phone start and restart when home screen appears.
In this case, while cable is connected, if I goto CWM Recovery and then remove battery, I can use CWM as normal.
b) If I remove the battery and connect the any charger (Wall or USB), the phone don't start.
I have searched the forum but can not find anything about that.
Thanks in advance.

, it only charge when go to Download Mode.
In CWM recovery mode it don't charge.
With running phone, it don't charge and if I use a USB Cable, I can't see its drives (internal or external);. I tried this last in 2 differents pc
In battery stats window, it says that I need connect a usb charger.
I try 2 different batteries and 2 wall chargers and 2 USB cables.
I dit a hard reset, reinstall again CM9 Alpha 4 (until 19 Jun it works fine).
I did a dissasemble of the phone to see if any pin of the micro-usb port is broken, but I see all fine

Re
Hi
This a very common issue with the Galaxy S2, never heard about it for SGS+ but you can never know.
The USB connector on your phone is responsible for this problem. It doesn't have anything to do with the battery or the ROM.
Samsung says it's because of moisture that got inside the socket. For SGS2 the problem is fixed by changing this component.
Hope it helps

Hi sorel22,
Thank you for reply. I'll try replace it. Is very strange that it works only in Download Mode

More tests: Yesterday I installed broodROM business from http://forum.xda-developers.com/showthread.php?t=1696381.
All works ok USB charging, browsing on Windows on both drives (internal/external).
Again, I reinstalled CM9 alpha 4 and, again, I get the USB problems (USB charge only in Download Mode, and I can't browse int/ext drives)
So, I reinstalled broodROM again and all is working 100%.
And yes, I did all with wiped factory/data/cache/dalvik.
I want to thank broodplank1337 for creating this great rom

onumad said:
More tests: Yesterday I installed broodROM business from http://forum.xda-developers.com/showthread.php?t=1696381.
All works ok USB charging, browsing on Windows on both drives (internal/external).
Again, I reinstalled CM9 alpha 4 and, again, I get the USB problems (USB charge only in Download Mode, and I can't browse int/ext drives)
So, I reinstalled broodROM again and all is working 100%.
And yes, I did all with wiped factory/data/cache/dalvik.
I want to thank broodplank1337 for creating this great rom
Click to expand...
Click to collapse
You can try the gigabread+ its better than business. Its my opinion.
Sent from my GT-I9001

Thank you, I'll try it now.
GIGABREAD is based on 2.3.6 XXKQB and BUSINESS on 2.3.6 XXKQE.
What is changes? I can only find a WIFI issue solved, but I haven't issues with XXKQB?

Phone won't connect via USB

A couple of days ago I installed this ROM on my P880. Everything worked just fine except for the torch app, a known bug and whatsapp has some difficulties with changing from landscape to portrait mode or vice versa (I hardly use landscape mode so not much of a problem). However, when I connected my P880 to my computer today using the USB cable, neither my phone nor my pc gave any response or errors - nothing happens. My phone claims to be "discharging" when connected to a computer, but is does charge. The same thing happens when I plug my P880 charger into the wall outlet - nothing, but is does charge. My device is rooted and the bootloader is unlocked
Things I have tried so far:
Use 3 different cables
Use different PC's
Reboot phone and and switching it off/on
Disable USB debugging
Any ideas on how to fix this?

Is keeping the ROM mandatory to you? If not you can always change, I think. Not a very good resolution, but since not a pro, not anything else I can think of..

I'm willing to switch ROM, but I like this one when it works. the weird thing is that the USB connectivity suddenly stopped working. I didn't change any settings nor made I any adjustments to my phone. Also, when I turn my phone off and connect it via USB to my computer, it does get recognized and my P880 displays the charging animation. But when my PC begins looking for drivers it suddenly crashes (BSOD)

Beunhof said:
I'm willing to switch ROM, but I like this one when it works. the weird thing is that the USB connectivity suddenly stopped working. I didn't change any settings nor made I any adjustments to my phone. Also, when I turn my phone off and connect it via USB to my computer, it does get recognized and my P880 displays the charging animation. But when my PC begins looking for drivers it suddenly crashes (BSOD)
Click to expand...
Click to collapse
I got the BSOD several times too, with different ROMs. In my case it is caused by using Windows 8 and shutting the phone down (or rebooting it) while it is connected in anything other than 'Charging' mode. We know that Windows 8 drivers have issues with this phone, and this is just another of those problems.

Beunhof said:
A couple of days ago I installed this ROM on my P880. Everything worked just fine except for the torch app, a known bug and whatsapp has some difficulties with changing from landscape to portrait mode or vice versa (I hardly use landscape mode so not much of a problem). However, when I connected my P880 to my computer today using the USB cable, neither my phone nor my pc gave any response or errors - nothing happens. My phone claims to be "discharging" when connected to a computer, but is does charge. The same thing happens when I plug my P880 charger into the wall outlet - nothing, but is does charge. My device is rooted and the bootloader is unlocked
Things I have tried so far:
Use 3 different cables
Use different PC's
Reboot phone and and switching it off/on
Disable USB debugging
Any ideas on how to fix this?
Click to expand...
Click to collapse
that cm is basically an alpha version, it was the first rom on 4.3 we got for our device. plus, the kernel in it is also 3.4 alpha instead of usual 3.1 which is more stable, so check out official CM 10.2 for our device. you should not have any major issues with it.

When I plugged my phone into my AC charger this morning, It bleeped and confirmed that it was indeed charging. I tried my connecting to my PC and it connected like it should. I didn't turn my phone off overnight, nor have I tried any fixes. It seems like a self-breaking and fixing ROM
Flying_Bear said:
that cm is basically an alpha version, it was the first rom on 4.3 we got for our device. plus, the kernel in it is also 3.4 alpha instead of usual 3.1 which is more stable, so check out official CM 10.2 for our device. you should not have any major issues with it.
Click to expand...
Click to collapse
I will try the official CM 10.2. Is the kernel the only difference? (I'm fairly new to custom ROMs)
Thanks for the help everyone :good:

Eprj lacks sone features

You rezolve it?

Anyone?

problem with my usb

Hello guys/girls, i got a real serious problem on my nexus 6, the usb doesn't work... i aleardy tried to format, but the computer connection does not work either, and it didn't seem to work when i tried to format from my phone itself. remote connected adb didn't work either, and even installing a custom rom from the stock recovery didn't work (it writes "failed to mount sd card storange"). any ideas how to fix that? I can still charge it, but now when i charge it the battery usage writes "charging over usb" instead of just "charging". before it happend, it wrote "charging over usb" when i connected it to a computer... also, the fast charging does not work, it charges to 100 percent from 0 percent at something like 10 hours
I am have android nougat 7.0.0.
update: also, now i realized that if my phone isn't charging, it will automatically turn off...

aricet2133 said:
Hello guys, i got a real serious problem on my nexus 6, the usb doesn't work... i aleardy tried to format, but the computer connection does not work either, and it didn't seem to work when i tried to format from my phone itself. remote connected adb didn't work either, and even installing a custom rom from the stock recovery didn't work (it writes "failed to mount sd card storange"). any ideas how to fix that? I can still charge it, but now when i charge it the battery usage writes "charging over usb" instead of just "charging". before it happend, it wrote "charging over usb" when i connected it to a computer... also, the fast charging does not work, it charges to 100 percent from 0 percent at something like 10 hours
I am have android nougat 7.0.0.
Click to expand...
Click to collapse
Hi... Your phone is not recognized in bootloader either? Have you already tried to flash a factory image?

aricet2133 said:
Hello guys, i got a real serious problem on my nexus 6, the usb doesn't work... i aleardy tried to format, but the computer connection does not work either, and it didn't seem to work when i tried to format from my phone itself. remote connected adb didn't work either, and even installing a custom rom from the stock recovery didn't work (it writes "failed to mount sd card storange"). any ideas how to fix that? I can still charge it, but now when i charge it the battery usage writes "charging over usb" instead of just "charging". before it happend, it wrote "charging over usb" when i connected it to a computer... also, the fast charging does not work, it charges to 100 percent from 0 percent at something like 10 hours
I am have android nougat 7.0.0.
Click to expand...
Click to collapse
Have you tried with a different USB cable?

5.1 said:
Hi... Your phone is not recognized in bootloader either? Have you already tried to flash a factory image?
Click to expand...
Click to collapse
nope... when i connect my phone to my pc, my phone acts like i connected it to a charger....

Arju said:
Have you tried with a different USB cable?
Click to expand...
Click to collapse
yup, a few times.... i think it is possible that the problem is with the phone's usb port itself, but i'm not quite sure about that....

aricet2133 said:
nope... when i connect my phone to my pc, my phone acts like i connected it to a charger....
Click to expand...
Click to collapse
Have you activated usb-debugging in developer options?

Arju said:
Have you activated usb-debugging in developer options?
Click to expand...
Click to collapse
yes.

aricet2133 said:
yes.
Click to expand...
Click to collapse
When you connect the phone to your computer, don't you get a message on the notification shade where you can press and change from charging to data transfer?

Arju said:
When you connect the phone to your computer, don't you get a message on the notification shade where you can press and change from charging to data transfer?
Click to expand...
Click to collapse
nope, it's just charging.

Same problem
I got the same problem with my nexus6. I suspect it might had begin with the nougat 7.1.1 to nougat 7.0 OTA.
Rings a bell to anyone?

kassisto said:
I got the same problem with my nexus6. I suspect it might had begin with the nougat 7.1.1 to nougat 7.0 OTA.
Rings a bell to anyone?
Click to expand...
Click to collapse
Usually the problem lies with the cable or the USB port. The ports can get dirty allowing it to charge but not data transfer. A bad cable can do the same thing. There are people who have had to replace the port.
The OTA history was more like 7.0 to 7.1.0 to 7.1.1 [emoji6]

usb port
I did clean the Usb port and i did use several cables, tested on other phones. I'm a IT ingenior in France, with some soldering skill. I did change the battery, in an attempt to increase it's short duration without fast charge... but no result. I think it may be related to this :
www . androidpolice . com/2017/03/15/google-sending-android-7-0-ota-update-nexus-6-phones-running-7-1-1/#1
Since the device isn't recognize by any pc through USB, anyone with the same symptoms since this update managed to get back to 7.1.1 without USB?

kassisto said:
I did clean the Usb port and i did use several cables, tested on other phones. I'm a IT ingenior in France, with some soldering skill. I did change the battery, in an attempt to increase it's short duration without fast charge... but no result. I think it may be related to this :
www . androidpolice . com/2017/03/15/google-sending-android-7-0-ota-update-nexus-6-phones-running-7-1-1/#1
Since the device isn't recognize by any pc through USB, anyone with the same symptoms since this update managed to get back to 7.1.1 without USB?
Click to expand...
Click to collapse
FlashFire is an option, particularly for the N6.

i have the same problem i think its because of the custom rom or something

I think my phone is dead!!

I have using the phone yesterday and it was working fine but in the morning when i plugged in the charger nothing happened so I waited for sometime but no use.
Since then I have tried adb access laptop doesn't recognize the device and no device found comes in adb.
Also i tried wugfresh toolkit no device in that also.
I haven't dropped the device no water issue at all so if you can tell me if there is any way around so that I can turn on the device.
Doesn't boot in recovery bootloader in short I think its bricked only thing that is working is that when I connect in laptop connection sound is there apart from nothing is working.

Have you tried a forced reboot: keep power button down for 10 to 20 seconds.
You should also try another cable.

runekock said:
Have you tried a forced reboot: keep power button down for 10 to 20 seconds.
You should also try another cable.
Click to expand...
Click to collapse
I have tried everything bootloader recovery adb toolkit but laptop does not recognise the device only it gives pop up sound on connection.

Maybe try wireless charging, in case the USB socket has gone bad.

runekock said:
Maybe try wireless charging, in case the USB socket has gone bad.
Click to expand...
Click to collapse
USB port is working for charging and USB connection only thing is it is not recognized by laptop

goti(0) said:
USB port is working for charging and USB connection only thing is it is not recognized by laptop
Click to expand...
Click to collapse
It is possible to still be detected yet not charge.