Whenever I receive a call or call someone, there is no sound but loud squeaks and squeals. My microphone is alright as my whatsapp calls are okay and the network provider is ok too as I have checked with other phone. The problem is with this software. Also I have to wait for some time when I receive a call and then the screen goes white.So after about 10 seconds the call is recieved and squeaking starts,and you have to disconnect. Kindly do something about it, today I missed 3 emergency calls...