Why do Apple and ATT&T care if I go to France for three months and use a French SIM? I'm still paying AT&T $130 a month for two years. I'm sure that many iPhone users travel. Why not make the SIM interchangeable like every other phone? I'd be happy to pay AT&T two years in advance if it would make a difference. Use AT&T internationally for $2 a minute? Come on. I'll just use my unlocked Treo.