2-In-1 Standard / Micro Sim Card Size</br>Compatible with T-Mobile USA Network</br>Keep Your Existing Number or Get a New One</br></br>Product Description</br></br>Telcel Americadual sim card will only work with T-Mobile compatible or Unlocked GSM phones. To activate your service?? you will need a need a Telcel America Unlimited International** and Nationwide 30 day service plan card or credit card. Some data services may not be available with all wireless devices. Blackberry smartphones and branded traction??Safe link?? Net10 or Straight Talk Phones will not work with this Program. Please make sure to update your APHN strings accordingly.</br><br/>http://www.amazon.com/gp/product/B01M8JEG99