SIM Card nit read but working [HELP!!!]
This is probably one of the oddest things thats ever happened to me, but I was recently on 4.1.2 and unlocked on the AT&T Galaxy S3. Before my SIM would work as normal and show T-Mobile when pulling down the notification bar, data, calling etc. Since I updated to 4.3 there isn't any text when pulling down the the notification not even "EMERGENCY CALLS ONLY" Like when there isn't a SIM in. I can't even access apn's it's telling me I need to insert a SIM card but the thing is I do have one inserted and I can text and call (411 doesnt work for some reason but other numbers do) I can't do data only text and call. Is there a way if I have to, downgade 4.3 to 4.1.2?
Thanks and much appreciated