オリジナル投稿者： Antonio Fornier ,
Got this same issue and brought my phone to the apple store several hours ago. Tech can't resolve the issue so he gave me a new iPhone 6 plus but I found out after restoring from icloud that the problem still persists. Issue was resolved by resetting the phone again and not restoring from icloud but setting as a new iPhone. At last I could receive and place calls again by not pressing the speakerphone. Problem is I now have to install all my apps manually.