iPhone calls cannot be made
Sometimes I cannot make or receive calls. I have taken my iPhone (11 Pro) to my phone carrier and they removed and re-inserted the Sim card and then it was fine. However intermittently still - especially after I have powered down my phone, when it comes back up I cannot make or receive phone calls. Could this be a sign that my Sims card is going bad? it is not an issue with cell towers.
iPhone 11 Pro, iOS 14