Aporte original por: nancyi

Texto:

Settings on your phone - network , restart the phone, you can replace the SIM card and replace the local test. The fault persists , then open the phone priority , select the network mode to use only 2G networks to test recommend that you re- install the SIM card.

Or else when installed microphones in the connection port that is not connected , you can reconnect it.

Estatus:

open