I am on the ATT BIS with the ATT unlocked Bold. Last week when I traveled to Canada and inserted the Fido 3G SIM into the Bold and made an outgoing call, the Bold gave me a msg "sim toolkit control error" then followed by "call barring", it would not let me call out, but I could receive call. I inserted a Rogers 3G SIM same errors. I have 3G data plans for the Fido/Rogers accounts.
I have no problem if I inserted the following SIM into the Bold (can make/receive call and browse)
- ATT 3G
- ATT 2G
- Fido 2G
So is that any problem with my Bold, or the Fido/Rogers 3G SIM, or ATT Bold cannot be used outside ATT despite it is unlocked.