C canon10d New Member Thread Starter Joined Nov 28, 2011 Messages 1 Reaction score 0 Nov 28, 2011 #1 Unlocked iPhone 3GS 4.3.5 Firmware - Invalid SIM/SIM Failure Just as the title says, when I insert my T-Mobile SIM card I get "Invalid SIM" and sometimes "SIM Failure"... It shows 1 bar of service with no text next to it and when I try to make calls or send messages they fail. Any idea? Thanks in advance
Unlocked iPhone 3GS 4.3.5 Firmware - Invalid SIM/SIM Failure Just as the title says, when I insert my T-Mobile SIM card I get "Invalid SIM" and sometimes "SIM Failure"... It shows 1 bar of service with no text next to it and when I try to make calls or send messages they fail. Any idea? Thanks in advance
