Share your experience!
steps:
1) have phone-enabled headset (standard headphones)
2) make a call on this phone
3) Turning off the headphones (pull out connector)
4) press the button to answer the call
result:
phone beeps like crazy through the speakerphone, despite the fact that the button "Handsfree" is not active.
ps.: sorry for my english.
Restart your phone, and check again
does not help. I suspect that the problem is in the software. the service desk could not help. they stupidly sent me here. second phone (z1 compact) not to repeat this mistake, so I can not be cured or disprove it again on another phone
Boot on safe mode and check again
http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008#U348008
in safe mode everything is OK. will search what program spoils life. thank you (about safe mode did not know)
Then its an app acting up