Sim not provisioned
I am from the UK and 2 years ago bought a pre-paid Sim and loaded it with credit. Because of Covid I have only just been able to return to the US and put the Sim into an old unlocked iPhone I have. I have a “no service” message and when I go onto Network in the Settings, it says the Sim is not provisioned. I have tried to activate the Sim again by entering the ICCID and my phone’s IMEI numbers, but it says not recognised and I can’t get any further. Any ideas on what I can do? I tried going to the AT&T store, but after waiting nearly an hour to be served, I gave up and walked out… thought I’d try to solve it online instead. Do you think maybe AT&T will have deactivated my Sim as it hasn’t been used for so long? There’s a stack of credit left on it. Thanks in advance!