Phone calls are laggy, phone rings, but no sound transfer either way
I have a customers iPhone 6 Plus. The device works perfect on the internet, sends text messages via regular text and iMessage.
Sound plays find on speaker, siri works fine.
But when I try a test call or any call at all the phone is very laggy after I hit the call button, or when I answer an incoming call.
When it is connected it doesn't transfer sound from either direction, Microphone / Speaker / Speakerphone do not seem to function, even though these individual parts are fine and working.
I tried software reset to full restore without going back to backup.
Not sure what else I can try, the phone is getting service so it's not an antenna issue, seems to be a software issue but after restoring the device via iTunes w/ new download it didn't resolve any issues.
Es esta una buena pregunta?