ABOUT SERVICE: Your new Mobile number can NOT be transferred, canceled, or replaced by any other account. This plan can NOT be changed in the first month of service. funding can NOT be transferred.You can switch or downgrade your plan on the 2nd month of service by contacting T-Mobile "1-877-413-5903" customer care.SIM CARD: The 3-in-1 SIM card. (Micro, Standard, Nano. For use with T-Mobile and UNLOCKED GSM phones.Note: "Blacklisted phones, will not work". The following steps must be as followed to start your new service: 1. Buy sim card in our listing2. We will ship the sim card (not activated and unfunded) to your shipping address3. VERY IMPORTANT! You MUST contact us at "Help@BlacStarwireless.com or at 818 850 1361, for activation. If you activate SIM other than us, we will NOT issue you a refund 4. After you receive the sim card, please email us or use our customer support number provided in this listing with the following info: SIM Card number you received For new number, zip code of the new number you request. For port in from a different carrier, the existing number, account number, PIN/Password, name and address of the old carrier Optional (If you want me give this info to T-Mobile): First and last name and email. Your SIM card will be up and running within 15 Minutes. *Transfer number may take longer time 5. You can refill after 30 days buy going to ultra.me or dial 611 on your mobile phone. or with us at a discounted price.