The failure of the iPhone 6S earphone is quite common is a part that is exposed and any liquid or blow can damage it.
The accumulation of dirt on the network is also frequent and in this case it is necessary to replace this network.

When you can not hear well the other person on the call, or don't even listen at all, the earphone is likely to be malfunctioning.

We replace the handset and you will hear your calls again.
Contact us and repair with us.