Welcome to Apple iPhone news and Chat discussion forums. iPhone Discussions is dedicated to iPhone,Talk about iPhone modifications,software,reviews,Support, iPhone news , iphone mobile,iPhone OS and more...
I got an iPhone 4 in US and I don't know how to unblock it here in Brazil.
My friend saw the Modem Firmware number and said that is impossible to do it.
What can I do to use use my cellphone?
ONLY the carrier it is locked to can unlock it. If it's a GSM phone, it's locked to AT&T. If you don't meet their requirements, they will not unlock it.
Contact them and find out if you qualify.
If you are not and never were an AT&T customer and can not provide an original proof of purchase from and Apple Store in the US or AT&T for a no-commitment phone, they will not unlock it.
Reply something about Unblock iPhone 4 or Post a New Thread