23-11-2019 10:08 PM - last edited 23-11-2019 10:13 PM
I have tried 6 different USB cables. 4 are supposed to be sync cables, 2 are MHL cables which charge only. The sync cables make the computer connection sound but don't show up on the computer. I have tried Smart Switch and Kies but phone still won't connect. They all charge the phone OK. I used to have an S3 that connected to Win 7 OK.
I looked into buying a genuine data cable but see a lot of claims which aren't backed up by feedback. Does anyone know where I can get a genuine cable from?
I looked at Device Manager and saw an unknown device with a yellow triangle and black exclamation mark. I have tried uninstalling and reinstalling.
I have spent many hours on this, just to download 4 pictures. Can someone please suggest what to try next?
24-11-2019 02:57 AM
Hi @justmegt ...why don't you try to use Direct WiFi to transfer your files ?
24-11-2019 03:54 PM
Tried WiFi. Only Router appears.
Tried WiFi Direct. Nothing Appears
After many hours, tried:
Win 10
Start
Settings
Devices
I saw 'Unknown USB Device (Device Descriptor Request Failed)'
Driver Error (in grey)
I clicked 'Remove Device' and clicked 'Yes' to the message 'Are you sure that you want to remove this device'
Re-inserted USB cable and suddenly my phone appeared on computer. I downloaded my pictures and tried it again.
Every time, since then. I get the error 'Unknown USB Device (Device Descriptor Request Failed)' and my phone won't connect.
18-06-2020 03:38 PM
Did you ever get this resolved? I'm having the exact same issue and tried all the things you did.
30-09-2021 12:36 AM
Have just started the same issue on my A71
(Device Descriptor Request Failed)
Tried the same options as above...
An array of cables, same issue
6 x different USB ports, same issue
Try connecting to 1 x desk top & 2 x laptops, same issue
Device manager, remove device, re boot PC, same issue
Device manager, update driver, re boot PC, same issue
MUST BE THE PHONE... never dropped, all other functions - perfect.
Is it a software or hardware issue ?
Does it need upgrades / patches or...
Is it the jack plug ?