Chosen Solution

Every time I make a FaceTime call and when the person answers it says FaceTime failed, or when I make a phone call the speaker button doesn’t show and I can’t hear anything also the person on the other end can’t hear anything as well

Im on iOS 11.4 (15F79) with an iPhone 7 Plus 256gb (A1784 Intel Antenna Band) and my problem is the SAME exact thing. Ive called Apple & TMobile and they havent been much of help. Apple checked the Hardware and they said mine was fine. To also add on, when I take the sim out and try Facetime Calling or Facetime Audio calling, it still fails me. It’s not a sim issue. It was working properly until Tuesday July 10