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?
Hi @justmegt ...why don't you try to use Direct WiFi to transfer your files ?
Tried WiFi. Only Router appears.
Tried WiFi Direct. Nothing Appears
After many hours, tried:
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.
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 ?