Database Users

[Q] USB connection not working

Hello everyone, this is my first post and it´s about my Defy, which, for some reason, the USB port does not work to access the phone and/or the SD Card.
1: I did a soft and hard reset and the problem persists.
2: The phone does not show up on the device manager under Windows so not even an error message saying "Device not recognized" or something. Also, it won´t show up in Ubuntu.
3. The "Connect your charger" message shows up all the time.
4. No notification in the phone when plugged to the PC .
5. Even though I can´t access the phone from the PC, I still can´t charge it through the USB port.
6. I can connect/access the phone and SD Card using Wi-Fi (Motorola Phone Portal) but not USB. I can see "Plug in USB to launch" in Phone Portal but cannot press the button, only the one referring to Wi-Fi.
PS: This is my second Defy, the first one got the same problem so I got a new one... sadly, the it happened again.
PS2: I wonder if a USB 3.0 port has to do with anything? It´s the only thing that I noticed before the USB stopped working.
Any help or hint is greatly appreciated.

well, i don't think it's an usb3 problem ...
to be sure you could try to connect your phone with an older usb2 port computer ...
is the phone charging on wall charger and usb-cable ???
if not, it really sounds like a hardware failure ... then i would send it to customer service and tell them that there is the same problem again .. maybe the just repaired something and it's faulty again ... be sure, that they are changing the faulty things ...
if your phone is charging on wall charger, it could be that it is an problem with your pc ... try another one ...

DJ_Synergy said:
well, i don't think it's an usb3 problem ...
to be sure you could try to connect your phone with an older usb2 port computer ...
is the phone charging on wall charger and usb-cable ???
if not, it really sounds like a hardware failure ... then i would send it to customer service and tell them that there is the same problem again .. maybe the just repaired something and it's faulty again ... be sure, that they are changing the faulty things ...
if your phone is charging on wall charger, it could be that it is an problem with your pc ... try another one ...
Click to expand...
Click to collapse
1. I mentioned the USB 3.0 port because it was the only common thing just before the usb conection stopped working.
2. The phone charges normally using the wall charger or usb (2.0, 3.0) cable through the PC.
3. It does not matter what PC is connected to or the OS (Ubuntu, Win7)/
Thanks for the response!

It is possible to brick it. Wtih some phone's it seems to be a common error for usb ports to be blown.
Could also be the cable... My cable that came with the defy was already snatched after a few months. My screen started going on and of when I was charging it.

labsin said:
It is possible to brick it. Wtih some phone's it seems to be a common error for usb ports to be blown.
Could also be the cable... My cable that came with the defy was already snatched after a few months. My screen started going on and of when I was charging it.
Click to expand...
Click to collapse
Is there a way to check for faulty hardware-related issues?

just test different cables, computers or even mobiles ... then you will see, what is faulty

DJ_Synergy said:
just test different cables, computers or even mobiles ... then you will see, what is faulty
Click to expand...
Click to collapse
What I meant was some software that check or even some kind of physical device.
Anyway, I know it´s not the cable or PC faulty but the phone itself. But I want to confirm if it´s software or hardware related and if there´s a fix.
Thanks!

Try using USB with logcat open. You might see something in the log that will tell you what's happening
Sent from my MB525 using xda premium

want to make a simple charging cable.. help needed plz

hello ... m kind of fed up with my data cables messing up .. its like they work good for a month n then they charge the slowest in the world n have to change it n the new one charges good ... i keep cables with utmost care like very delicate objects but still my last cable got bad in 3 months n now i got xiaomi original cable n it didnt even lasted a month ....
from getting bad i mean the cables charge very slow and when connected with lappy i have to place it at particular angle to access my fone files ...
so main thing .. i want to make a charge only data cable myself by using cable from a old nokia charger ... now i got cable, usb n micro usb connectors but dont know the wiring like to which points i should solder the wires .. so plz help me

Perhaps it's your micro USB on the phone that's the issue? Im still using the stock cable that's 2 years old now. I've replaced USB ports several times on other devices as they do go bad.

GIYF

note 4 version not connecting to computer or fast charging

ive replaced the usb port, fully updated the phone, tryed a friends battery, new charging brick and cords , tryed different
outlets and the phone will not fast charge or show up on the computer/any computer.
when i plug it into the computer i get a error message:usb device not recognized or malfunctioned (i shortend it)
much help needed please and thank you

With regards to the fastcharging part, are you also sure you are using an adapter that supports 2Amps at 5V ? This is also the spec of the original adapter that came with the phone (I also found that it works with different 2.1 Amp. adapters generally for tablets)

albanianagi said:
ive replaced the usb port, fully updated the phone, tryed a friends battery, new charging brick and cords , tryed different
outlets and the phone will not fast charge or show up on the computer/any computer.
when i plug it into the computer i get a error message:usb device not recognized or malfunctioned (i shortend it)
much help needed please and thank you
Click to expand...
Click to collapse
I have the same problem. I changed the USB board but the problem was on the motherboard. I test all possibilities soft and we did. I changed USB card, USB cable and nothing. I went to a service and said that it is guilty USB chip on the motherboard. True or not I do not know but the man said he changed and now it works. It cost $ 50. He said it's a motherboard intervention more difficult.

My nexus 4 when connected to PC it's only charging...

USB connection problem
No change in device manager happened even in fastboot mod, it's only changing, I test a lot of way for solving but no ways help me, if there is a solution, tell me. Thanks

Sounds like the USB port needs to be replaced on the phone.

audit13 said:
Sounds like the USB port needs to be replaced on the phone.
Click to expand...
Click to collapse
can u explain more

I'm sorry Guy's, but I have to go for a monthly, but thread is open for your comment and solution!

There is an internal ribbon cable that connects the USB port to the motherboard.
I believe this internal cable needs to be replaced if trying different computers, USB cables, and USB 2.0 ports doesn't solve the problem.

I fix my phone problem, a repairman change my micro USB socket.

Fast Charging Issue on BLACKSHARK 2 !! HELP !!!

Recently i noticed an unfamiliar behavior on my BS 2.
1) FAST charging no longer works. ( i tried different usb cables & adapters )
2) I cant transfer data into PC using Data cable.
3) OTG also not working.
4) I cant even turn on USB tethering.
Please help me what can i do now.

Well it seems your usb-c port might be damaged

LeeYaoSan said:
Well it seems your usb-c port might be damaged
Click to expand...
Click to collapse
now i can see my phone is getting fast charging again but still no OTG USB tethering :'(