Sim will not work in new iphone 16 Pro Max

MichaelP — Tue, 24 Jun 2025 09:58:03 GMT

Hi, I have a problem with a new iphone I added onto my o2 account for my sister who is an existing o2 pay monthly customer like myself. I took the o2 pay monthly sim out of her old mobile (iphone 15) and put it in the new iphone 16 pro max and nothing happened. There were no bars. I tried 2 x other o2 pay monthly sims from friends and their sim cards were fine and there were 3 bars and signal. I thought maybe there was a problem with the sim so went to o2 shop and got a new sim but the issue is still the same. Could my sister's existing o2 number somehow be linked to her old mobile which is stopping it from being used on the new iphone 16 pro max?

Re: Sim will not work in new iphone 16 Pro Max

madasaf1sh — Tue, 24 Jun 2025 10:10:30 GMT

@MichaelP

I would give o2 a call and get them to check the account as the sim should work, so it could be a problem with the account

topic Re: Sim will not work in new iphone 16 Pro Max in Pay Monthly

Sim will not work in new iphone 16 Pro Max

Re: Sim will not work in new iphone 16 Pro Max