Unregistered SIM or Not Registered on Network message
This message will be caused by either a locked/defective phone, or a faulty SIM card.
Deco X58 | Insert a new SIM card in the modem
This page explains how to remove and insert a SIM card into a Deco X58 modem.
Mobile user guides
Our online mobile user guides provide detailed step-by-step instructions on how to use your mobile phone, as well as basic troubleshooting for some common problems.
Mobile | Data isn't working on a new SIM card
This article contains steps to get mobile data working with a new SIM card.
B818/H122 | Change Wi-Fi name or password
This page explains how to change the Wi-Fi name and password on a B818 or H122 modem.
About using your iPad
Find out how to use your iPad on the One NZ network, including managing mobile data, checking your allowance, updating your software and getting help with your device.
B818 Modem | Step-by-step guides
This article covers the most common questions and answers about the B818 modem (e.g. how to set up your modem).
About trading in an old phone
Details on how to trade in a mobile phone
Use SIM swap to replace a lost/stolen SIM card
SIM swap is the best way to replace your lost or stolen SIM card if you have the following:
Mobile | Change Ring Time Setting
This article details how you can change the ring time of your mobile handset