So heres the deal. I have an iPhone 4 with the least amount of minutes, 2GB plan, and unlimited messaging. I moved into a house for school, but have very spotty wireless reception with my iPhone 4 on AT&T (live on the ocean). A few people in my house have blackberry phones on AT&T and have much less trouble getting service. I have a blackberry tour from when I had verizon that is unlocked. Is it possible to use my blackberry with my iPhone 4 plan? Obviously the SIM doesn't fit, but I can imagine AT&T has new sims for cheap. I'd like to use my blackberry until I'm back in NY.