T-Mobile headquarters are in Bellevue, Washington. As of 2014, they have over 290 million customers across the the United States. They are partially owned by Deutsche Telekom AG  which is a large telecommunications company. NOTE: please visit the site directly to verify the details and obtain more information. If you are a new T-Mobile phone customer you will want to activate your phone online immediately. We have provided a quick and basic “how to” guide below to activate your new T-Mobile phone online.

how to activate – T-Mobile Phone Online

what you need:

  • internet access
  • a mobile device, computer or tablet
  • your new T-Mobile phone
  • activation code – the 11-to-12-digit code printed on the activation card that is found in the package with your device/SIM

what to do:

  • visit: www.tmobile.com/activation
  • click on the pink “GET STARTED” button for your phone type
  • type in your activation code in the space provided
  • type in your SIM card number in the space provided
  • type in your phone serial number in the space provided
  • click on the “Next” button
  • provide all the required information on the “Set up your account” page and move forward
  • provide all the required information on the “Select your plan and services” page and move forward
  • review your select and then submit your information and follow any other additional prompts to  complete your phone activation