Activating a US Mobile SIM Card

Activation is made simple during the one step activation process. Make sure you have your SIM card on hand, as you’ll need the SIM Card Number located on the back of your card for activation.

  1. Fill in the required information
    1. Enter your SIM Card Number [found on the back of your SIM card]
    2. Zip Code [your home address]
    3. First Name and Last Name
    4. Email Address and Password [your account will be created with your email address as the username]
  2. Choose Your Plan
    1. Select your preferred levels of talk, text, and data to create your monthly base plan.
  3. Make your payment
    1. Billing Address [as it appears on the bank statement of your card]
    2. Credit Card Details
  4. Agree to the Terms and Conditions
  5. Hit Continue

Note: Porting your number over takes a few more steps, which can be found here.

Now you’re ready to use your US Mobile SIM card! Give us a few minutes to rev up your service. Insert your SIM card into your phone and you’re ready to go.

If you have any problems activating your SIM card please contact us at or via the chat box. Our customer support team answers calls within 20 seconds, emails within 10 minutes, and chat conversations from our website within 5 seconds.

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  1. John John

    Hello SIM card is installed-Account is activated-No calls will go thru since Monday-Repeated tried to call or e-mail for help-Where is the help? JC 2/2/16

  2. Samuel Samuel

    Can I activate a sim card that was previously used approximately a year ago. Or should I order a new one? Thank you.

    1. Hey Samuel,
      Thanks for getting in touch, can you drop us a line at We’ll be able to assist you better with this, you might not need to order a new one 🙂

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