3G

Past iPhones have been unable to access T-Mobile’s 3G network due to a difference in frequencies between AT&T and T-Mobile, AT&T using the 1900MHz frequency, and T-Mobile using the 1700/2100MHz frequencies.  Since AT&T uses the 1900MHz frequency for 3G, this is what iPhone’s have been manufactured with the ability to support, meaning that an unlocked iPhone operating on T-M...[Read More]