(Update: photos and A5 chip) A leak Saturday night has shown what's purported to be an iPhone 4-based prototype with native 3G on T-Mobile USA's bands. Identified internally as the N94 versus AT&T's N90 and Verizon's N92, the phone is virtually the same save for the frequency change. BGR noted that the proximity sensor cover appeared to be the old design from when the white iPhone was first shown rather than the new look that will show in the shipping white model due next week.
