Re:What is AT&T doing at 1111340002?
by lxgr on Sunday November 07, 2021 @12:58PM
(#29141766)
It makes sense that they don't: If you're using an unregistered/test MCC/MNC id as part of the IMSI, they would just consider your phone a roaming guest that they can't provide services to.
Even if you'd be using an actual IMSI (not recommended – this seems like a legally more gray area), you would just fail authentication with that provider's AuC and the network would not let you register in what would be the GSM equivalent to a device trying to connect to a Wi-Fi with the wrong password.
Even if you'd be using an actual IMSI (not recommended – this seems like a legally more gray area), you would just fail authentication with that provider's AuC and the network would not let you register in what would be the GSM equivalent to a device trying to connect to a Wi-Fi with the wrong password.