I'm thinking of upgrading my phone to a Droid. I understand that this phone requires a data plan ($30 per month). However, I was talking to a friend who just got a Droid and he says he is now seeing more airtime being charged against his voice plan minutes than before he got his Droid phone, and he's not making any more calls than before. So my question is this: What additional airtime charges should I expect if I switch to a Droid phone? When am I actually using airtime (browsing, using GPS navigation, sending / checking email, etc.)?
Thanks in advance for the help.