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Need help. When a call incomes the ringtone doesn´t sound. In the settings opcion in sound all have volume up except the ringtone bar. When trying to increase the volume and select "ok" it doesn´t work and the volume is still on mute. What should i do at this point? oviously without resetting the phone to factory mode i dont want to lose
Restart the phone and check again
If you decide to reset your phone
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
Have you tried a reboot? Do you have a bluetooth device connected that is controlling audio for calls etc? or do you possibly have a faulty jack connection?
Just a few ideas to look into