I have had to put my SIM into an my old phone, due to my newer device dying.
I have no service, it just says SOS only.
I have tried turning it off and reinserting the card and haven't changed any settings.
Optus seems to have gotten rid of any helpful direct customer support. Obviously I can't call them.
Solved! Solved: Go to Solution.
If you send them a quick message, they'll send through an ID form for you to complete.