SIM failure on iPhone
My iphone 11 pro max keeps saying "sim failure". Its not the sim card because i put in my iphone 8 and worked just fine. Ive had this problem at random times for about a month, but usually works after cutting off then on. It would make me set up my cellular plan, after it cut on and that fixes it temporarily. Its been a full day now and it just keeps displaying "sim failure" even with no SIM card in it. Help
[Re-Titled by Moderator]
iPhone 11 Pro Max