new iphone us version,i want to use t-mobile...what do i do?

[richbad25]

i want to download the program that allows me to use my current t-mobile service,instead of switching to att.what do i do?just got it last night so...if you can't tell,i'm a novice.so help...thanks in advance....

 

[anmoldagreat]

you can search
sorry but this has been convered a million times and if you google search im sure youll find tons of you tube videos and guides on how to do exactly what you want to do.