I will be in Niagara Falls (Canadian side)for 2 days at the end of the month. I've read all the threads about traveling with the iPhone and all the extra expenses you can incur while roaming. Has anyone ever been near the Border? Where does it officially become Rodgers instead of AT&T? Is there an overlap of services? Should i just take my SIM out and put it into another phone or will just turning off Data roaming be enough. I can't afford an outrageous bill and i need to have a phone with me. Any Advice appreciated.