Can't select carrier while in roaming
Here's my scenario:
- iPhone 1.1.2 OOB properly activated
- Using AT&T network as I am on NY
- I am not from US, so I am here in roaming profile
SMS and voice services are working flawless. However my carrier has no agreement with AT&T, so I can't get EDGE working while on AT&T (I got signal but there is no data transferred).
Then, I see i can select T-Mobile. Agreement with them are temporary disabled :/ (I know, my carrier sucks).
Fortunately, I have some more choices, like Cingular, which works on my original mobile (NOT the iPhone).
Tale told, in order to select Cingular on iPhone Carrier list, i need to do a change on my SIM apps card (i think is to set a different GSM frequency), and as soon as I change it, iPhone pops the message "You must use an approved SIM card to use this phone" and I can't get anymore onto SIM apps menu and signal instantly disappears.
I restart the phone (normal way) and i am back to AT&T. Go check and, guess what, no changes done on my SIM.
So, what I need to do is, as I am already in roaming, I would like to select another carrier which is NOT AT&T, but I can't.