What is the best 3G phone to use for tethering to a MBP? (Yes, I'm considering the iPhone, but I really need something less expensive) I prefer USB tethering. PDAnet adhoc wifi tethering is not acceptable due to rogue access point scanning at work. AT&T has the best coverage in my area. If I go with an iPhone, how much of a hassle is jailbreaking the phone to do tethering?