Hi everybody. I am a "happy" owner of Experia C device. I have a problem using my phone in pair with SBH52+SW2 gadgets. When SW2 connected to phone as same as SBH52, the SBH52 does not want to make a calls via BT headset. The sound goes through phone speaker but not through SBH52. The problem solved when SW2 is disconnected from phone. Once SW2 connected the same thing occurs.