You can purchase a SIM card online at T-Mobile.com, by calling T-Mobile at 800-866-2453 or at any T-Mobile retail store. T-Mobile offers both pre and postpaid SIM cards.

SIM cards are so thoroughly integrated into our everyday lives that we don't pay attention to them anymore and do not understand what they are used for. In this article, we dig into the concept of SIM ...

How to activate a SIM card. If you’re using a new SIM to change networks then your phone may need to be unlocked first. Once you have unlocked your phone, you can activate your new SIM.In some ...

Standard Sim card (15mm x 25mm) Micro Sim card (12mm x 15mm) Nano Sim card (8.8m x 12.3mm) If you've ordered a Sim online, for example, though our Cheap Mobile Finder, your allowance (minutes, text ...