USB OTG in my LG V20 not being recognized when plugged into charge port. - General Questions and Answers

I just loaded up my LG V20 with the AOKP android 7.1, I plugged in my USB OTG ( SD micro card installed in this) and it will not even power on at all. I rebooted into TWRP, and it works just fine there, I can read, mount and unmount, no troubles. Booted to system, but no power at all to the adapter plugged into the USB-c / charging port. I loaded a second custom ROM, Desolaton, and it behaved in the same manner as AOKP. I then restored the original V20 OS in TWRP from a backup, , and it sees the drive just fine, so it must have something to do with this phone and how it behaves with custom ROM's. My reader is a couple of years old, but doubt that is an issue since is does work on the original OS that the phone shipped with, and it also worked with my LG G3. Is there a setting I might be overlooking In Settings to enable this to work? Any ideas as to if it might be a hardware of software issue? Thanks.

Related

Help figuring out what's broken with my OnePlus One

Hello everyone,
A couple of weeks ago my USB data connection on my OnePlus One has stopped working.
This means that no connection is even detected on any computer.
This is not a driver issue as the computer doesn't even notice anything has plugged in.
I think it's not a software/ROM issue because the same applies to fastboot mode and recovery mode - no data connection, no "usb plugged in" sound on any computer, no device showing up.
It's also not a cable issue, as the same cable works on other OnePlus One's and I've tried many different known-to-be-working cables.
More facts:
1) When plugging to a computer USB port - the battery icon shows the charging (lightning) symbol for a half a second and disappears and it won't charge. The computer, of course, doesn't see a usb device plugged.
2) When connecting to an AC charger - it charges just fine.
3) I already tried replacing the dock connector and flat cable unit with a new one - did not solve the issue, which means the dock connector is fine.
Any insight on this will be greatly appreciated!
Thanks!
purpleman2k said:
Hello everyone,
A couple of weeks ago my USB data connection on my OnePlus One has stopped working.
This means that no connection is even detected on any computer.
This is not a driver issue as the computer doesn't even notice anything has plugged in.
I think it's not a software/ROM issue because the same applies to fastboot mode and recovery mode - no data connection, no "usb plugged in" sound on any computer, no device showing up.
It's also not a cable issue, as the same cable works on other OnePlus One's and I've tried many different known-to-be-working cables.
More facts:
1) When plugging to a computer USB port - the battery icon shows the charging (lightning) symbol for a half a second and disappears and it won't charge. The computer, of course, doesn't see a usb device plugged.
2) When connecting to an AC charger - it charges just fine.
3) I already tried replacing the dock connector and flat cable unit with a new one - did not solve the issue, which means the dock connector is fine.
Any insight on this will be greatly appreciated!
Thanks!
Click to expand...
Click to collapse
By dock connector, you mean the USB port? Typically, this issue arises when the pins in the USB port get damaged. I don't know how the rest works out, but if that particular section of pins have to communicate throughout the rest of the motherboard, perhaps the trail responsible for that may have somehow gotten damaged. This is a clueless theory, someone with more electrical/motherboard experience can verify this.
What I do know is that once the micro USB port has been replaced on the phone, the issue should be fixed. It happened to an S3 I still have and I got it replaced by a friend. Sadly, it happened to me at the wrong time since i had wiped the entire OS and internal storage and was relying on my USB OTG cable and a flash drive which contained a rare rom called Sonic Open Kang Project (SOKP).
DO NOTE that this has also been an issue with me on the software side of certain devices. I uave had practically every flagship device out there and have come across a point where this happens on both stock and custom roms. My Optimus G did it on custom roms, and my Nexus 7 2012 occasionally on stock. There were other devices I cannot remember but sometimes factory resets or replacing the rom helps. However, you did state that the result is still the same on fastboot/recovery, so this seems to be more on the hardware side.
I replaced the USB connector (including it's flex cable) entirely. Did not solve the issue.
What else could be wrong?
try again
purpleman2k said:
I replaced the USB connector (including it's flex cable) entirely. Did not solve the issue.
What else could be wrong?
Click to expand...
Click to collapse
Try another computer. See if you can get any response from adb.
pbergonzi said:
Try another computer. See if you can get any response from adb.
Click to expand...
Click to collapse
I tried a lot of different computers and cables. None of them detect a USB connection.
Again, to clarify - they don't even SEE a usb device has been plugged in.
recovery?
purpleman2k said:
I tried a lot of different computers and cables. None of them detect a USB connection.
Again, to clarify - they don't even SEE a usb device has been plugged in.
Click to expand...
Click to collapse
You running a custom recovery? If so, see if you can toggle the mtp on/off reboot with each back to recovery. Use the tools to check the filesystem, permissions, etc.
Could pins have damaged?
Well, I did replace the USB connector with a new one, so if pins are damaged it's gotta be on the motherboard side, and I can think of no reason why that would ever happen.
As for recovery, I'm running TWRP and I'm not sure I understand what you meant I should try. Can you elaborate?
Thanks

USB Device not recognized / No fast charge

So I've had my S7 for around two months now, and all of a sudden fast charging just stopped working. Thought, oh, must be using the wrong cable (have loads of them micro USB cables floating around)
Now I'm certain I'm using the official Samsung fast charge plug and cable that came with the phone, and still no fast charge. When I try to plug into my Windows 10 Desktop or Laptop I have a message that says the device can't be recognized
Phone has already been rooted and flashed with a custom rom. Didn't think that was the issue as it wouldn't even show the mounted storage in TWRP, or identify the phone in ODIN.
Now I've flashed back to the stock rom that I made a backup of when I had the phone, and I still have the same problem!! Can't access internal / external storage using the supplied USB cable and can't fast charge.
I'm thinking the USB port on the device is just knackard.. but really, I've looked after it so well I fail to see how this could happen, unless it's a common fault.
Might just get a wireless fast charger, but do you guys have anything else I can try before giving up on the USB connectivity?
Cheers
try to connect to a different pc, if same it means your usb connector is faulty
Sounds more like the cable is bad tbh, you won't get fast charge from a PC USB port, only from the Samsung charger
But if the device isn't recognised by the PC, and won't fast charge from the charger, the common thing between them is the cable
Possible it's the phone USB port, but more likely the cable is bad
Afaik certain cables can not fast charge either, so chances are the ones you have lying around that are not the official cable can not support it
Genuine Samsung USB cable is white with the USB port symbol on both ends and the phone end has two small ridges to grip when inserting and removing it, should help identify it
Yep I'm using the official cable and fast charger
I'm trying to fast charge via the fast charger and not USB. Only trying USB to access the internal / external storage.
Tried on my desktop and laptop and both have the same issue where my old HTC m8 connects without any issue.
clownstyle said:
where my old HTC m8 connects without any issue.
Click to expand...
Click to collapse
With the same cable?
*Detection* said:
With the same cable?
Click to expand...
Click to collapse
To fast charge I've tried the original Samsung cable with the fast charge plug.
To connect to the PC I've used x3 different cables that all work with my HTC one m8. With all of them I get device not recognised. Already tried installing Samsung switch and reinstalling drivers which didn't work.
clownstyle said:
To fast charge I've tried the original Samsung cable with the fast charge plug.
To connect to the PC I've used x3 different cables that all work with my HTC one m8. With all of them I get device not recognised. Already tried installing Samsung switch and reinstalling drivers which didn't work.
Click to expand...
Click to collapse
I mean for the HTC, does the Samsung fast charge cable work to connect to the PC?
Does sound possible the phones USB port is faulty if you can't get any connection at all to the PC with multiple cables
Try changing the USB mode in developer options
Networking > Select USB configuration
*Detection* said:
I mean for the HTC, does the Samsung fast charge cable work to connect to the PC?
Does sound possible the phones USB port is faulty if you can't get any connection at all to the PC with multiple cables
Try changing the USB mode in developer options
Networking > Select USB configuration
Click to expand...
Click to collapse
Yep the genuine Samsung cable works when connecting the htc to the computer.
I've tried enabling USB debugging and switching between charging, MTP, PTP, RNDIS, Audio Source and Midi.. all of them come back with the windows popup
clownstyle said:
Yep the genuine Samsung cable works when connecting the htc to the computer.
I've tried enabling USB debugging and switching between charging, MTP, PTP, RNDIS, Audio Source and Midi.. all of them come back with the windows popup
Click to expand...
Click to collapse
Unfortunately it is starting to sound like the phone is at fault
Still under warranty? (KNOX 0x0)
*Detection* said:
Unfortunately it is starting to sound like the phone is at fault
Still under warranty? (KNOX 0x0)
Click to expand...
Click to collapse
Unfortunately not. Well it's been rooted and flashed so I guess not.
Ordered a wireless fast charger so hopefully that will see me through and WiFi network for file transfers.
I reckon the USB port will need replacing but I'm not really inclined to do that myself.
Just noticed you said you flashed back to stock using a backup you made
Have you tried stock using ODIN and 100% stock files, using CSC to reset?
My dad has a5 2016 with the same issue, and no warranty. I bought flex + connector , replaced it and still nothing. No fast charge ( it takes cca 4hrs to charge it fully ) and no usb connectivity. I gave up on that
@ClowsTyle
Any luck? I seen your recent post in another thread and it sounds like you tried to replace the USB but that didn't work.
I'm having the exact same issue now. Device suddenly stopped fast charging, Windows does not recognize it when plugged into PC. I ordered a new cable to double check and also tried on different computers. I also tried reinstalling drivers, but nothing has worked.
Hi my is doing the same thing no Fast charge and no pc connection, did anybody find out what happen with yours ?
You have to change power ic s535 for s7 edge.
When usb gets moisture power ic will damage.
I have same problem my phone charging 0-100 6hours but ı install notorious kernel and it takes 3 hours it is better than 6 hours
Same Issue
I've had the same issue for the past 3 weeks now and I've tried everything I know...
1. Tested cable and charger with another S7 and they work fine.
2. Factory Reset.
3. Changed the USB port chip.
4. Turned on "Low Battery Dump".
So far, the issue hasn't changed.
was this issue solved?
I´m having same issues whit my galaxy s7 active, I can not fast charge my phone no matter what cable I use, then noticed that evrytime I plug it to any computer it says the devicescan not be recognized, I´m about to buy a new charging port and install it, but I want to make shure this is not a software related issue.
I´ve tried several cables and several laptops/ pc´s
I´ve factory reseted my device and turned on low battery dump, wiped cache partition, and problem still there...
The charger could be faulty/damaged did you try a different charger?
---------- Post added at 06:43 PM ---------- Previous post was at 06:40 PM ----------
Dial *#08# and select the first option (mtp and another option i am on a custom rom that seems to not have the *#0808# setting
I also have the same issue with my phone the phone charges but not recognize and also tried to change settings on phone and nothing? And my other samsung phone works and nothing wrong with USB tried to install smansung drivers on PC and still same issue.
I tried a different USB and nothing works and different ports on my comp.
My ports works with my other samsung phone so not sure why not with the S7?
Is the USB faulty?

Can't use OTG-USB in TWRP on Grouper

Hello, I've flashed a couple of ROMs on a Nexus 7 (2012 - Grouper), using TWRP and a USB memory.
Now, when I tried to flash a new ROM, the USB OTG is no longer recognized.
I've tried two different OTG cables and a couple of double ended USB sticks, but they are not recognized.
I've also tried ADB sideload, but that didn't work either.
I've had a similar problem on other devices, so I just put the ROM on an SD card. But the Grouper doesn't have a slot for an SD card.
The same thing happened last week, but the OTG came back after navigating around in TWRP. Now it seems to have permanently gone.
Any ideas anyone?
Thanks
I'm wondering whether this could be a hardware fault, possibly due to using a faulty USB adapter some time in the pas.
Is it possible that a faulty adapter could produce a hardware fault in the tablet?
In that case, is there any way of getting a new ROM onto the tablet memory and so give the tablet (my wife's) a new lease of life? TWRP is working, but that's all. Maybe jumper leads onto the USB connector. That could work if it's just the connetor, not a softare prob. I don't suppose anyone's tried that.

OTG issue on Poco

Hi at all,
who of you, guy has use otg cable for connect drive or pendrive on our phone?
I plug a pendrive using different otg cable that I have, but nothing happen.
I use OTG tester app and it say that OTG is enable, but nothingi happen.
So I've to understand if my phone is defective or there is some option to enable it.
I activeted CIT menù to test OTG but it fail.
IMO the issue depends for alimentation, because if I connect a drone (I'm modellist) nothing happen, while if I do the same on other phone the drone ligh on.
Any idea?
Just connected an old USB I had laying around with the USB OTG adapter I still had from my OnePlus One.
Stick was in fat32 I believe and I have an Android 11 ROM (Latest Nitrogen OS) on the Phone.
Anyway, no problems whatsoever. Was recognized immediately and gave me the Options to Explore/Eject, without any prior settings or anything.
[armitage] said:
Just connected an old USB I had laying around with the USB OTG adapter I still had from my OnePlus One.
Stick was in fat32 I believe and I have an Android 11 ROM (Latest Nitrogen OS) on the Phone.
Anyway, no problems whatsoever. Was recognized immediately and gave me the Options to Explore/Eject, without any prior settings or anything.
Click to expand...
Click to collapse
thanks for test
my Android version is stock 10, with 2.04 MIUI stable.
I don't know if it depend from a bug or hardware issue.
The phone has 3 mounth live and I would't like to return it to Amazon for the change.
I was unlucky with Xiomi this time. I bought the RedMi note 9 pro and I change it for camera problems (dust in the lens). Now with this OTG issue....:crying:

Phone power issues AA not working

Hello everyone.
So I have a few issues which I am guessing are all somewhat related.
TL;DR
1) Android auto stopped working
2) if I reboot. It will just power off and needs to be plugged in to power back on
3) usb c to usb c only works one side not both sides. But usb a to usb c works both directions.
Note: my wife has the same phone and had none of these issues with the same cables and such. So it's not cables issues. We also have the same OS.
The longer detailed version.
First issue. Android auto stopped working. At first it told me that there may be an issue with the cable and that I should get another cable. I tried my wife's pixel 3 xl and it worked fine. So it's not the cable issue. I tried restarting. The phone did not. So I plugged it in and it powered on. Now the phone will only boot if it is plugged in. Plugging the phone into the car usb a to usb c it charges on both side of the cable but there's no longer any warning about the cable for Android auto. Again my wife's phone works with the same setup so it's an issue with my phone. Then when plugging my phone in using the oem cable I noticed it only chargers using one side. The other side fails. Tested my wife's phone and both sides work. I then test my wife's cable and same issue with her cable for my phone.
Pixel 3 XL
OS 11 RQ1A.210105.003
I did a factory reset but same issues remain.
I'm open to using a ROM if it will fix the issue.
I saw a few posts on google forums about this issue but not fix/solution so I was kind of wondering if a ROM would possibly fix this issue.
Thanks so much for any help.
Willing to try most items as phone is out of warranty and I really like Android auto and hate not having it.

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