My phone display shows a red EV box next to the signal strength bars. My husband has the exact same phone and his doesn't have this. I manually went through every screen and every option on our phones is the same....EVERY option.
EV or EVDO is a high speed internet technology over cdma(Sprint, Verizon) networks, 1x is internet at 1/10 the speed of evdo. It varies from one to the other since EVDO is not always available in as many areas as 1x.
What does EV mean? 
Linear Mode
