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.
Deco app | Check Wireless Broadband signal strength
This page explains how to check the Wireless Broadband signal strength your Deco device is receiving.
Mobile | Manage services by TXT
This article provides a list of different TXT codes that you can use to manage your One NZ mobile services.
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.
Wireless Broadband home phone | Disable Call Diverts
You should know
My One NZ | Buy a Pay Monthly Add-On
This article explains how you can buy more data, more calling minutes or TXTs for your Pay Monthly (On Account) account using My One NZ.
About groupCall
With groupCall you can talk to up to four people (on mobiles or landlines) at once in a mobile conference call. It's great for talking to your whole family or team. There's no cost to activate it, you simply pay for each call at your standard plan rate for that call.
Wireless Broadband home phone | Manage Call Waiting
Let's you know when someone is trying to call you while you're on another call.
Mobile | Data isn't working on a new SIM card
This article contains steps to get mobile data working with a new SIM card.