4 Replies Latest reply: Jul 29, 2013 1:55 PM by tmo_lauren RSS

Using prepaid SIM for postpaid plan?

I am currently on a T-mobile postpaid plan.  Hypothetically, if I replaced my current smartphone with a micro-SIM card to a smartphone with a different sized SIM card (ex. iPhone 5), I would need to purchase a new SIM card (nano sim in this case).  I think the price was $10.

 

Is is possible to purchase a T-Mobile prepaid SIM card (on sale online occasionally), and activate that nano SIM card to my current plan?  Can I use a prepaid SIM on a postpaid plan?  What is the price for activating the SIM card when I already have purchased the SIM card?