Originally Posted by moh86fci
2 days ago my head set navigation keys stop working on my desire s and any other htc phones but the head set itself is working. Any ideas?
Sent from my HTC Desire S using XDA
Things break, malfunction, go out of order all the time. Then they are either fixed or replaced.
I think it's a problem with your headset buttons or one of the connecting solders came off. You can either take apart the control module and try to check if the connections are fine - because it looks like your audio leads are working, but the 4th control lead is busted.
Alternatively, you can try a similar headset and if it turns out to be working, just buy a new one. These things are pretty cheap.