To the best of my knowledge all iPhone 4's (except for Verizon of course and unless you've updated via PwnageTool/Sn0wbreeze etc) carry the same baseband on 4.2.1. If your device is factory unocked you have one thing less to worry about.
The baseband manages all the functions which require an antenna and more info can be found here:
To the best of my knowledge all iPhone 4's (except for Verizon of course and unless you've updated via PwnageTool/Sn0wbreeze etc) carry the same baseband on 4.2.1. If your device is factory unocked you have one thing less to worry about.
The baseband manages all the functions which require an antenna and more info can be found here: