If you have an unlocked Windows Phone device that you want to bring over to T-Mobile’s network in the U.S., you can get a SIM card for free with a coupon. That’s with free shipping, too. Just wait for the SIM card in the mail, choose a plan, and put the SIM card in your phone.
T-Mobile’s SIM cards are usually sold for $10. Head over to their online store and enter coupon code: NOVSIM. There appears to be a limit of two cards per customer.
There are three types of SIM cards so check your phone. For example, the Nokia Lumia 925 and Nokia Lumia 1020 use the micro SIM. Interestingly enough, the Nokia Lumia 1520 uses the nano SIM. Here are the listings for the three types of SIM cards on T-Mobile:
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