Is my smart phone using data when I'm listening to FM radio on it?

Episode 935 (1:23:02)

Bill from Portsmith, VA
Samsung Galaxy Note II

No. A built-in radio uses the headphones as an antenna. He's thinking about upgrading to a Galaxy Note II, but is wondering if that has an FM radio in it. Leo says no, but there are some smart phones that have it.

He's also wondering about using a MiFi to reduce his data costs with a smart phone. Leo says it would be cheaper to just use the data with the Galaxy Note II, but the MiFi would be a handy thing to have for Wi-Fi only devices. The MiFi requires a monthly plan similar to smart phones though as well.