So today I was getting ready to go out and got directions from A to B on my iPhone running off wifi. Then I noticed that when I went on the bus, I of course lost wifi connection, but the GPS thing was still working. I could see the blue dot and it moves as the bus moves and the map is still loaded even though I had no connection on the bus. Now I'm wondering if this is gonna cost me. It's weird because on my iPhone 4, I have disabled all cellular data. It does not say 3G only the bars. Wifi itself was also off when I was on the bus. I was sooo shocked and surprised. So is this gonna cost me anything to have this running? I'm on the Bell network in Canada.