Switched from verizon to tmobile but sim and esim not working so phone has no service now
My family (4 people) switched to tmobile from verizon, 3 phones are working but 1,(my son's) is not working. Multiple sims cards and esim tried but to no avail. Several trips to apple store did not fix problem. The phone was in perfect working condition before with verizon. Ther e were no problems. Does anyone have any ideas
iPhone 11