Prepay | Activate a Prepay SIM

This article contains steps on how to activate a One NZ Prepay SIM through your mobile handset or by calling 777.

Before you begin.

  • The SIM card must be inserted into the mobile phone being used to activate it.
  • To activate your Travel SIM, you have to call 777.

Steps

Follow the steps below to setup your Prepay SIM so it can be used on your Mobile Phone.

Through you Mobile Phone

  1. Ensure you are within mobile coverage
  2. Insert your Prepay SIM card
    You'll receive a Welcome TXT message with instructions on how to activate your SIM
  3. Go to https://one.nz/activate/
    The Get started on One NZ Prepay screen appears
    • Note: You can do this on your phone, tablet or computer
  4. Enter the Prepay mobile number
    Mobile number field confirmation code will be sent to
  5. Tap Next
    A confirmation code is sent to the mobile number
    Grey next button to proceed to next step
  6. Enter the confirmation code
    The Get started in 3 easy steps screen appears
    Confirmation code field with no digits entered
  7. Tap Lets go!
    The Prepay Plus plan selection screen appears
    7 Prepay Activation - TXT - Get Started Screen - Lets Go Button Feb 2026
  8. Select your plan
    8 Prepay Activation - TXT - Select Your Plan Feb 2026
  9. Tap Get this plan
  10. The Top up screen appears
    Your Prepay SIM and plan are now active, you will receive a SMS notification once complete.

    Green button with white continue text

Prepay Activation - TXT - Processing Your Request

Prepay Activation - TXT - We've Received Your Request

By calling 777

  1. Insert your Prepay SIM into your mobile
  2. Check to ensure you are in mobile coverage
  3. Call 777
  4. Follow the voice prompts that will guide through activating your SIM

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