Samsung Galaxy S3 not connecting via USB Since about a week, my S3 doesn't connect anymore via usb to any computer.
I don't think it's driver related as it was working before and I didn't change anything on the computers.
It now runs Jelly Bean but it didn't happen right after the update (only after a week or so it stopped working).

The S3 doesn't even show the notification with the usb icon nor the possibility to switch between PTP &amp; MTP...


I tested with 3 different usb cables, on vista, win 7 and mac os x.
Tried to activate / deactivate usb debugging, restart the phone and event done a hard reset, it's still not working.
Phone is not rooted


Maybe it's hardware, but the phone didn't fell or anything like that...

Do you have an idea ?
I just had the same problem tonight.  All of a sudden my pc wouldn't recognize my S3 when I connected via the USB.  I tried the USB debugging first and restarting...didn't work.  I popped the battery out and restarted, and the USB icon showed up. Hope that helps.

Thanks for all the helpful troubleshooting ;)