Do I need a new SIM card?
If you are switching your mobile number to One NZ from another network, you will need a new One NZ SIM card.
If you've just signed up with us, we will send you a SIM card with your new plan. If you are ready to, you can order a SIM online.
You may need to swap your current One NZ SIM card if you upgrade your plan, or if you change to a phone that uses a different-sized SIM card.
If your mobile number has been blocked, or you have a SIM that has not been active on the One NZ mobile network for more than 12 months, then a SIM swap is not the solution.
Before you swap SIM cards.
Make sure that you back up your phone contacts, your TXT messages and any other data on your old SIM card to your phone's memory, otherwise you might lose them when you swap SIM cards.
You can find out how to do this by using our interactive Device guides.
Please note – there may be a $5 Charge for a Replacement SIM Card for certain scenarios.