Originally Posted by rsutoratosu
I had 3 of my 4 and 1 4s unlocked by ATT, I'm about to switch one to the tmobile service.
bimmerfrk, tmobile are reframing their 3g to the same frequency as ATT, by end of the year, they claim they'll have it all done. My coworkers are on tmobile 3g on the iphone, ill have one of mine switch over to test this weekend, as the area of 3g are small till end of the year.
yup, the are upgrading their HSPA+ to support 1900MHz band, I know the 4S has HSPA+ but cant remember if the 4 has it, pretty sure it did