This problem is unacceptable, the phone is currently useless as a phone.
When receiving calls: I slide the green answer button to the right and it just 'hangs' there without answering the call. The phone keeps vibrating untill the caller hangs up (this can take up to 30 seconds, my provider limit). When the caller tries again it sometimes works but mostly people are unable to call me.
When I make a call: The phone does not display any awknoledgement of pressing the call button. After about 10 seconds (sometimes longer) it suddenly shows up the call timer and I hear an impatient "Hello? Hello?" on the other side. If I attempted pressing the call button more than once, everything starts acting funny (calls/hangs up randomly).
I'm tired of explaining people I'm having trouble with my phone. Rebooting or resetting does nothing to solve this. Please Sony, patch this!
Here is the link to the forum discussing about this issue that almost every user who upgraded to JB is experiencing
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