Develop Bugs

[Q] WinMo wont connect via USB since new Froyo installed.

I was trying to put the hum/hiss sound fix on my sd card and I cannot get my pc to connect via USB...
My wife has a TP2 and it connects fine...
I have tried with/without the sd card in, rebooted the pc and phone, rebooted the phone while connected to the pc.... nothing...
wtf...
anyone else with this problem?
PS... NRGZ28 had posted a very basic rom for booting to android back in Feb and it is now gone from hotfile. Anyone know of a quick boot into android?

- Try a different computer
- Try a hard reset
That are the first thing you should do.

Tried hard reset...
Dif PC is not an option at the moment... I have rebooted...

Just flashed the ROM (NRGZ newest, thank goodness I had it on my SD card) and I still cant get it to sync...
I have attached the USB error I am getting... (Win7, new install)
The phone is not asking if I want to active sync or use as storage???? wtf...

FarBeyond said:
Just flashed the ROM (NRGZ newest, thank goodness I had it on my SD card) and I still cant get it to sync...
I have attached the USB error I am getting... (Win7, new install)
The phone is not asking if I want to active sync or use as storage???? wtf...
Click to expand...
Click to collapse
Reboot your PC? lol bet your tried that already...
Try this:
settings > connections > usb to pc > and disable Faster Data Sync then try. This way uses the generic usb drivers and maybe it will connect.

That did not work...
How do I get my Win7 laptop to see the phone with Android on it?

FarBeyond said:
That did not work...
How do I get my Win7 laptop to see the phone with Android on it?
Click to expand...
Click to collapse
dont think thats working yet

Ya I don't think that works yet, it's tied to Android software drivers and the use of the USB port, since there is no drivers to control the port only to charge battery. Windows thinks there is something there, but the phones USB can't communicate back....I think this is the issue or at lease after playing around with it on my phone anyway

Not that it's a huge amount of help but might troubleshoot down to the hardware level...if you go into bootloader mode on the phone and connect to USB does it connect?

I don't think you should go that deep and dirty. My touch pro 2 works only with only 1 (non-HTC) cable of the 10 i have at home, all are the "standard" mini-USB but only one works flawlessly for communicating/flashing/syncing, the other cables either do the same error - device not recognized - or windows says that the device could communicate faster - and only copies files slowly.
All in all: you should simply check with another USB cable or if you have the factory HTC cable try it with that. I noticed that the cable i am using other than the HTC one is a very good quality thick (low-resistance and double-shielded) USB cable and it never failed on me.
One other thing you should definitely watch for: plug the USB cable into the motherboard USB port directly (on the back of the PC where you plug the keyboard, mouse etc.), sometimes PC cases with front panel USB outputs simply die, or are wrongly attached to the motherboard USB header and it can cause the aforementioned problems too, not to mention if it is wrongly attached it could harm your phone too.

T989 USB Port DEAD

When I plug my handset to ANY computer (with, without kies or drivers, it doesn't matter) the phone charges, but, nothing appears on the computer (no unknown device or recognizing the two drives of the phone, but not mounting them (as it did before)) on the phone.
The "USB" icon doesn't prompt and if I go to settings/wireless and network/ USB utilities, when I touch the USB mass storage button, it prompts me to connect cable, which is already connected.
-USB debug isn't activated (I've tried both)
When my phone is powered off and I start to charge it, the charging screen doesn't prompts, It just start booting.
I've tried different USB Cables.
The Phone is Official Stock Never Rooted (I discovered this trying to root it today)
Am I SOL if I want to root it without a working USB Data port?
Any ideas?

i would say make sure there's no dust/ buildup in the port. I had connection issues once to find a pocket lint cramed in there. next do all the other stuff. uninstall/reinstall drivers, diff usb port, diff pc, reboot. My symptoms were similar to yours but i was able to reboot into recovery/bootloader and use adb/fastboot no prob, so not sure. and I was already rooted/twrp recovery. might be worth it to try fastboot in bootloader just to be sure and get a recovery on it asap. If that works you should be able to recover stock or flash whatever, then test usb again in diff pc with fresh kies install. good luck.

Sounds like bad/improper USB cables to me, not all USB cables support data and charging, make sure you're using an official Samsung USB cable.
If you have a friend with a Samsung smart phone ask to try their cable.

USB conection problems, faulty hardware?

my a2 lite does not connet to my pc, I have installed drivers, put it on usb debug, but my pc does not recognize de phone, I have tried different usb ports and cables with no success, it does charge eventually with some cables, but I don't know if this is hardware problem or there is any setting I am missing, it does not give me any choice of chosing the usb kind of conection
it is a new phone just prepped for everyday use, not hacked or modded in any way
USB OTG is working but only reading, I cannot write in external usb drive with es file explorer, or the includer file aplication, it says unsupported operation
any help?

Set hardware id in the adb_usb.ini file perhaps

cpu004 said:
Set hardware id in the adb_usb.ini file perhaps
Click to expand...
Click to collapse
thank you, but I cannot acces from adb as there is absolutely no conection from my computer, it only starts charging but as if it were just a charger, there is no usb mode options avalaible y my phone, and the pc does not recognize anything conected
I have tried to connect with another computer with the same results, it only gets power, but no data comunication whatsoever

as nobody gives any clue or info about some hidden setting, I must assume this is another case of bad quality control in xiaomi products, I will check with the seller

Did you specifically set file transfer mode via the notification drawer or left it on charge only?

cpu004 said:
Did you specifically set file transfer mode via the notification drawer or left it on charge only?
Click to expand...
Click to collapse
the phone does not detect either that it is connected to a computer, so the notification to select the mode of connection does not even show
I have tried usb otg and I can read fine but I cannot write at all in a pendrive
I have installed also an sd card as internal memory and have storage errors all the time so I have removed it
I have tried also conection in fastboot mode but the computer still does not recognize anything connected
I have uses several cables, usb ports and even 2 different pc with same results
My only guess is that there were some hidden config setting that is messing with the phone, that's the reason I am asking before going to the seller.

Seems like a broken USB pin then

cpu004 said:
Seems like a broken USB pin then
Click to expand...
Click to collapse
an usb pin should not affect internal sd memory, and usb does not work like water pipes, one pin data in one pin data out, they need both data pins for reading also, so as it can read from pendrive the problem is somewhere else, not in the connector.

This could be a hardware problem. Have you tried to connect it to another computer?

I have already tried on 3 diferent computers with same results. The only diference so far is that it actually does not read either the content of a pendrive connected through OTG, the first day it read it, now it only detects but reads nothing.
Also when sd is configured as internal memory, instead of reading internal memory, that seems to be the normal result, I can read only the sd card with android file explorers

I have the same problem.
No connection data with pc/mac, it only charges.
I'm italian and like many other italians, I've also the problem with Sim slot 2 with no connect..

robiox said:
I have the same problem.
No connection data with pc/mac, it only charges.
I'm italian and like many other italians, I've also the problem with Sim slot 2 with no connect..
Click to expand...
Click to collapse
It is good to know I am not the only one.

F**k, this phone starts to look like a piece of garbage I dont connect to USB, I dont use SD not 2nd sim, so I did not experience these issues, but, f**k again..

Have you tried rebooting? Press the power button for 15secs. to power it off. Use another cable, use another PC, make sure the cable is plugged in properly... bla bla bla. Oh, have you tried placing the phone into a dry rice bowl? Haha (sorry, I had to). I'm sure you've tried it all.
So, I have not much to say. Only that I had a similar problem with a Moto G after I flashed a LineageOS ROM. It worked fine before, but with the new ROM, the USB didn't work at all (it could only read OTG). It was stuck in the "charging" mode. No notification nor option to turn it to file transfer. The PC didn't recognise it at all, either.
Solution? Initially, I turned on USB debuging option and the PC saw the phone (on windows device manager, it was there, but not on MyPc). It was some advance. I can't remember if adb detected it.
Final solution? Luckily my phone was rooted and had a custom recovery, so I could easily flash the same ROM from the TWRP recovery and everything works fine now.
You might try using Xiaomi's flash tool to try to flash the orginal ROM again IF the phone is recognised by the tool (try if it can see the phone) http://en.miui.com/download-354.html
And I suggest contacting Xiaomi for a warranty claim if needed, 'cause it looks like a harware problem (a pin the the microUSB port issue). But be ready to answer the questions posted above several times haha.
Good luck!

adriakus said:
Have you tried rebooting? Press the power button for 15secs. to power it off. Use another cable, use another PC, make sure the cable is plugged in properly... bla bla bla. Oh, have you tried placing the phone into a dry rice bowl? Haha (sorry, I had to). I'm sure you've tried it all.
So, I have not much to say. Only that I had a similar problem with a Moto G after I flashed a LineageOS ROM. It worked fine before, but with the new ROM, the USB didn't work at all (it could only read OTG). It was stuck in the "charging" mode. No notification nor option to turn it to file transfer. The PC didn't recognise it at all, either.
Solution? Initially, I turned on USB debuging option and the PC saw the phone (on windows device manager, it was there, but not on MyPc). It was some advance. I can't remember if adb detected it.
Final solution? Luckily my phone was rooted and had a custom recovery, so I could easily flash the same ROM from the TWRP recovery and everything works fine now.
You might try using Xiaomi's flash tool to try to flash the orginal ROM again IF the phone is recognised by the tool (try if it can see the phone) http://en.miui.com/download-354.html
And I suggest contacting Xiaomi for a warranty claim if needed, 'cause it looks like a harware problem (a pin the the microUSB port issue). But be ready to answer the questions posted above several times haha.
Good luck!
Click to expand...
Click to collapse
I have done all your sugestions previously, even reseting phone with a new gmail account so no config setting from other phone could interfere, I have also tried fastboot, but although phones goes to fast boot mode the pc does not recognize connection either
it is not an usb pin issue, tried 6 cables, 4 computers, 10 or more usb 2 an 3 ports, I am negotianting in aliexpress a refund, we'll see
If I go into recovery mode with power vol+ a broken android appears.

elsita said:
I have done all your sugestions previously, even reseting phone with a new gmail account so no config setting from other phone could interfere, I have also tried fastboot, but although phones goes to fast boot mode the pc does not recognize connection either
it is not an usb pin issue, tried 6 cables, 4 computers, 10 or more usb 2 an 3 ports, I am negotianting in aliexpress a refund, we'll see
If I go into recovery mode with power vol+ a broken android appears.
Click to expand...
Click to collapse
I don't know if you already did this, but try using a PC with Linux (you can use Ubuntu without installing it on the PC, then install the fastboot package).

Hi,
I had no problem with fastboot and adb with Mac!
Phone recognized by the machine and do transfer boot.img for magisk...
Now I Win!
I can see the internal memory with Android File Transfer (Trasferimento File Android in italian!) - this is the link https://www.android.com/filetransfer/.
My version of Build is V.9.6.8.0.
Solution:
- Connect the phone to pc/mac;
- Go to: Settings -> System -> Developer Options -> Select USB Configuration -> select first "Charge" and then "MTP" (Media Transfer Protocol)
- The system recognize the phone!
[for italian, like me, andare su Impostazioni -> Opzioni Sviluppatore -> Seleziona Configurazione USB -> scegliere "Ricarica" e poi "MTP" (Media Transfer Protocol) ]

robiox said:
Hi,
I had no problem with fastboot and adb with Mac!
Phone recognized by the machine and do transfer boot.img for magisk...
Now I Win!
I can see the internal memory with Android File Transfer (Trasferimento File Android in italian!) - this is the link https://www.android.com/filetransfer/.
My version of Build is V.9.6.8.0.
Solution:
- Connect the phone to pc/mac;
- Go to: Settings -> System -> Developer Options -> Select USB Configuration -> select first "Charge" and then "MTP" (Media Transfer Protocol)
- The system recognize the phone!
[for italian, like me, andare su Impostazioni -> Opzioni Sviluppatore -> Seleziona Configurazione USB -> scegliere "Ricarica" e poi "MTP" (Media Transfer Protocol) ]
Click to expand...
Click to collapse
somehow i was able to connect through fastboot with the help os some advanced users, I unlocked boot and managed to flash original firmware using fastboot mode, the result: no usb connection, no pendrive otg, sd card as internal memory gives storage errors all the time ...
so the phone is faulty, now I am at aliexpress hands claiming for a refund and send back phone

elsita said:
somehow i was able to connect through fastboot with the help os some advanced users, I unlocked boot and managed to flash original firmware using fastboot mode, the result: no usb connection, no pendrive otg, sd card as internal memory gives storage errors all the time ...
so the phone is faulty, now I am at aliexpress hands claiming for a refund and send back phone
Click to expand...
Click to collapse
Where are you from? Where did did you purchase the phone (the actual store, is it in China)? Depending on where are you from and what country did you buy the phone from, by law, you'll get manufacturer warranty. So, any "official" distributor in your country will have to provide a warranty solution for you. If Ali Express is unable to provide you with a solution, look into that.
Let us know how it work out for you

adriakus said:
Where are you from? Where did did you purchase the phone (the actual store, is it in China)? Depending on where are you from and what country did you buy the phone from, by law, you'll get manufacturer warranty. So, any "official" distributor in your country will have to provide a warranty solution for you. If Ali Express is unable to provide you with a solution, look into that.
Let us know how it work out for you
Click to expand...
Click to collapse
I am from Spain, and the aliexpress seller has store in Spain, but you know how chinese vendors act ... no agreement so far, and now aliexpress decides, whenever they turn back to work, because China as you may know is a whole year vacation place for workers ...

usb doesnt connect to pc (pc doesnt even recognize phone)

I've tried multiple pcs, multiple cords, and opening the phone to see if the usb had dust, and the phone only charges, doesn't connect to the computer at all (doesnt appear in device manager, no notification, nothing.) Should I get replace the usb area or try something different?

doonoo said:
I've tried multiple pcs, multiple cords, and opening the phone to see if the usb had dust, and the phone only charges, doesn't connect to the computer at all (doesnt appear in device manager, no notification, nothing.) Should I get replace the usb area or try something different?
Click to expand...
Click to collapse
You need to activate developer options by going to settings - and tapping on build number many times until it says you have activated developer options
Goto developer options set Default USB configuration to file transfer - your phone will now connect to PC and you will be asked to install the USB drivers.
This will install all the USB drivers you need
{If you want to connect a usb stick or mouse to USB ( stuff that needs power [NOT PC] you need to activate USB OTG first}
If this has all been done and it still doesnt work replacing the usb board may be necessary.

k500zm said:
You need to activate developer options by going to settings - and tapping on build number many times until it says you have activated developer options
Goto developer options set Default USB configuration to file transfer - your phone will now connect to PC and you will be asked to install the USB drivers.
This will install all the USB drivers you need
{If you want to connect a usb stick or mouse to USB ( stuff that needs power [NOT PC] you need to activate USB OTG first}
If this has all been done and it still doesnt work replacing the usb board may be necessary.
Click to expand...
Click to collapse
the same problem with me
I tried all the methods you said , dont work
Nothing but charges
it's the bug ? my os is 9.0.10

bilgofree said:
the same problem with me
I tried all the methods you said , dont work
Nothing but charges
it's the bug ? my os is 9.0.10
Click to expand...
Click to collapse
Same after update to 9.0.10

Backup your files, full wipe + Downgrade to oos 9.09 is worth a try maybe this will work [I am on 9.09 with EDXPOSED GRAVITYBOX banking apps work cool with Magisk hide, everything works great not gpay but I dont use it]

Question Phone not connecting via USB

My first Poco F3 is completely unlocked and running a custom rom, still able to connect to PC even now.
I have a second Poco F3 that I was able to originally connect to my PC to debloat, hadn't needed to connect it to a PC till now. Today was the day I could unlock it but when I connect it via USB cable, original or otherwise, no usb options appear on phone and nothing shows on PC. I can use the same cable on my first Poco F3 and everything works fine. I've tried multiple cables, reinstalling drivers, restarting phone and PC, trying a different PC, enabling debugging tools, etc.
Nothing shows in "My Computer"
Nothing shows in Device Manager
No usb options on phone (default is set to File Transfer)
Nothing shows in CMD with "adb devices"
Charging still works
Is there anything I can do to at the very least unlock the bootloader? Or is this not fixable?

long shot... check the usb C port for dirt/dust/fluff blocking connection...

Most probably u debloated an app responsable for media transfer. If u can, revert what u debloated.

Alin45 said:
Most probably u debloated an app responsable for media transfer. If u can, revert what u debloated.
Click to expand...
Click to collapse
Did a factory reset thinking that may have been the case, still no good.
Tried cleaning out the port and still no good either

I still think it's Windows. Please can you try putting Ubuntu (or another Linux distro) on a USB, booting from that, installing platform tools (ADB/fastboot etc) and then running ADB devices. Windows is very finiky sometimes.
Edit: when you plug in your phone to the PC do you get a notification saying charging? Or is there no notification? Also does it start charging the phone?

There is a delay before it begins charging and the charging animation plays but yes it does. But then there is no usb notification. Will try ubuntu and report back

Booting into Ubuntu, before installing platform tools the first phone that I knew worked showed up and showed up in adb devices when platform tools was used. The second still didn't show up, exactly the same as on windows

Try downloading the installed stock miui rom from the update menu in the miui update menu and re-install it on the phone

Unfortunately reinstalling latest package didn't help

Can't think of anything else to suggest. Sorry

If the usb connection continues to be nonexistent, is there any way to at least unlock the bootloader without using the Xiaomi Unlock tool on the PC?

Are you sure the USB cable you're using support transfert file?

Cjayy said:
If the usb connection continues to be nonexistent, is there any way to at least unlock the bootloader without using the Xiaomi Unlock tool on the PC?
Click to expand...
Click to collapse
Nope

Hmmmmm.....strange! I'm running out of ideas....try different USB ports on PC. Maybe it's a faulty USB-C port on phone after all.

do you have a type c usb-otg?
If yes then see if it is detected by the phone

X0PIRAT3 said:
Are you sure the USB cable you're using support transfert file?
Click to expand...
Click to collapse
Yes. Used 4 different cables, 1 of which is the cable that comes with the phone. None work on this phone but do on the first phone.
Alin45 said:
Hmmmmm.....strange! I'm running out of ideas....try different USB ports on PC. Maybe it's a faulty USB-C port on phone after all.
Click to expand...
Click to collapse
Tried different ports across 2 PCs. I'm starting to think it is a faulty port, though it worked fine a week ago.
arifqur said:
do you have a type c usb-otg?
If yes then see if it is detected by the phone
Click to expand...
Click to collapse
I honestly don't know if any of my cables are usb-otg, how would I check?

Try to use this version of Mi FLash Tool (only for drivers) : https://xiaomiflashtool.com/download/xiaomi-flash-tool-20210226
Extract and launch the executable then drivers install

Something like this. You can plug in any usb stick and see if it is detected. Another way to check whether the port on the phone is working for data as well

X0PIRAT3 said:
Try to use this version of Mi FLash Tool (only for drivers) : https://xiaomiflashtool.com/download/xiaomi-flash-tool-20210226
Extract and launch the executable then drivers install
Click to expand...
Click to collapse
Tried this and still no good.
arifqur said:
Something like this. You can plug in any usb stick and see if it is detected. Another way to check whether the port on the phone is working for data as well
Click to expand...
Click to collapse
I don't have anything like this but that reminded me of the usb-c to headphone adapter and that also doesn't work. Sound just plays out of the speakers.
Trying with Android Auto in the car, the car doesn't register a device connecting at all either.
Either the data transfer portion is somehow disabled on the device itself (which I would love to know how to enable it again if that's the case) or it's a damaged usb port. Just strange that it worked a week ago.
Something I forgot to mention, when I went to unlock the bootloader yesterday the phone did not show up anywhere except for in the ADBFastbootTools to debloat the software as a OnePlus device but then never showed up again.

Cjayy said:
Tried this and still no good.
I don't have anything like this but that reminded me of the usb-c to headphone adapter and that also doesn't work. Sound just plays out of the speakers.
Trying with Android Auto in the car, the car doesn't register a device connecting at all either.
Either the data transfer portion is somehow disabled on the device itself (which I would love to know how to enable it again if that's the case) or it's a damaged usb port. Just strange that it worked a week ago.
Something I forgot to mention, when I went to unlock the bootloader yesterday the phone did not show up anywhere except for in the ADBFastbootTools to debloat the software as a OnePlus device but then never showed up again.
Click to expand...
Click to collapse
I have the same problem, did you solve it ? I replaced the usb board of the phone, still not working.