Ok i have been considering buying an iPhone 3G i will buying it from O2 (uk based network). So here we are thanks in advance; *for Wifi/GPS questions i do live in the UK GoogleMaps: Is a internet connection required to use google maps (roadmaps) GPS: I am not sure about all the different forms of connections, do i have to pay for it? Or is it something similar to Satnav SimCard: Can i use my existing simcard from O2 and put it into the phone or are iphone ones different in some way. WIFI: Its says i will be charged for WIFI access is that only for the independent business's wifi, basically no charges for using my home wireless. Positioning: Is finding out where i am free using whichever option is available. I may update but i am reading up at the moment. Thank you very much. EDIT: People have been mentioning unlimited internet plan can someone explain and is it available for O2 pay as you go and how much ||Edit 2|| The unlimited usage and wifi; does is the usage meaning when im using 3G?