This Combi SIM is a great way to get connected if you’ve already got a device that takes Standard or Micro SIMs. It's easy to get started with your T-Mobile Combi SIM. They're designed so that they fit in both a regular SIM and also a Micro SIM card slot in your phone. If you have a mobile that requires a standard SIM card, just use the combi SIM card as it comes. If you need a Micro SIM card, all you have to do is pop out the middle of your T-Mobile Combi SIM and you have a Micro SIM ready to go. Just slide it into your phone or tablet, make sure it's unlocked for the T-Mobile network, and you’re ready to go.