I realize this has been asked before but none of the solutions I've read has worked.
Phone: Samsung Exhilarate I577 (yes, old).
System: Android 4.0.4
Suddenly the USB stopped working. I connect the cord to the computer, hear that little noise the phone makes (so it is detecting something) and....nothing. The computer doesn't indicate that it is detecting the phone.
I used to be able to download music easily - now it's impossible. Forget Kies, what a piece of junk. Don't even mention it, thanks.
What is going ON????
I've done the USB utilities, developer options - I even factory reset my phone but nothing is working!
If someone could just supply an explanation for this baffling phenomenon I would be grateful.