Hi I am shopping for navigators. I want to get an iphone so i can use it as an ipod and also as a navigator. I got a used iphone off ebay but it has the "please insert sim to activate" message or something shit like that. so today i went to the at&t store because I was trying to get rid of that screen. the retard there says the GPS will not work without a data plan. when I told him that i have done my homework and it WILL work, he got his boss to come over and his boss basically told me to go fuck myself. 1. so will it work or no? 2. anybody know how to get rid of this message without a valid sim?