I just notice that I cannot call nor receive call from my iPhone 7

thank you Lyssa, my iphone model is A1778, so it does cover. when I made call, phone at the other end rings but I could not hear it, when people calls me, my phone does not ring but goes to voicemail, it only happened since two days ago.

I took it to Apple store for diagnose the problem, it’s the circuit board, costs too much to repair, get a new XR.