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At work I use headphones, and I want phone calls etc. to call with sound only in my headphones, and call silent when headphones are disconnected. As it is now it rings from the speakers of the phone, even if headphones are connected.
I have Andoid version 5.0. I have tried to use Smart connect but that doesn't work at all. For example I have set it up to start Spotify automatically when the headphones are plugged in, and also set the volume to normal, but when I plug in mye headphones nothing happens
That seems to be a hardware issue, contact your local Xperia Care asap