T Mobile Insider Code
And don't fall for the: Webinsider code(promo code) is a 20% discount to your phone bill. When the code is used. To begin, simply enter the exclusive code you were provided. If you do not know your exclusive code, click here.
Webgo to a store and tell the rep that you want to switch carriers and how many lines you have. Webcheck the status of your exclusive code. You would have to ask a tmobile employee if they have any to spare.
