I am a current Tmobile customer and I feel the plan is affordable. I was thinking of buying an unlocked iphone instead of passing my number down and heading to ATT for a much higher monthly rate. I also have to add another line because my son will need it for communication. Best options? I read the unlocked thread about getting an unlocked iphone and using the go phone prepaid to save money-I do not quite understand what that means. Both sons have prepaid prehistoric phones (as they say) it would be nice to find a way to save $$ and still be able to communicate. I have had the same Blackberry for 2 years and Im ready 