Sign up for T-Mobile phone service by going to T-Mobile.com, clicking on plans and selecting a service plan. It is also possible to sign up by going to a T-Mobile store or kiosk and speaking with a representative.
T-Mobile offers a number of personal, family and mobile Internet plans for use with T-Mobile compatible devices. As of 2015, individual plans start at $50 per month which includes unlimited talk text, and 4G LTE data speeds up to 1 gigabyte as of March 2015. Data speeds are reduced after 1 gigabyte has been reached. Customers can opt for a 3 gigabyte 4G LTE package for $60 per month, 4 gigabyte for $70 per month and an unlimited amount of data at 4G LTE speeds for $80 per month.
In addition to contract service plans, T-Mobile offers a prepaid phone service. The rates for T-Mobile's prepaid plans start at $40 per month which includes unlimited talk, text and data at 4G LTE speeds up to 1 gigabyte. Subscribers can add an extra 2 gigabyte of data for an additional $10 per month up to 5 gigabyte.
T-Mobile requires that subscribers have a T-Mobile SIM card. If a subscriber wishes to bring her own phone to T-Mobile, the official website features a SIM card check tool which displays what kind of SIM card to order for a given model of phone.