Activate your new SIM.

Once you've submitted your details. we'll start working on getting your new SIM activated.
This will happen within two hours.
 

 

It’s a good idea to keep both your old and new devices with you while the new SIM is being activated.
When your old SIM stops working, make sure you switch your new device off and on again. You’ll
know your new SIM has been activated when you see the signal bars at the top of your device’s screen.

 

 

 

 

  How to find your Three number.  |

  Get help with your device.  |

 

 

  Login or register for My3.  |

 

 

Activate your new SIM.

Enter your Three number.
Please make sure you've entered your existing phone or Mobile Broadband number. This should start with 07 and contain no spaces.
Please make sure you've entered your existing phone or Mobile Broadband number. This should start with 07 and contain no spaces.
You’ll find this on either the card or pack your SIM came with.
Please make sure you've entered your 19-digit SIM number.
Please make sure you've entered your 19-digit SIM number.

Submit