This article contains information about OneNumber
What is OneNumber?
OneNumber is a mobile Add-On that shares data, calling minutes and TXT entitlements of your primary Pay Monthly mobile plan with your eligible watch.
For example, if you have One Plan, you will have unlimited data, mins and TXTs available on both your phone and your watch.
The same mobile number is used on both your watch and your phone with the OneNumber
add-on, so your contacts won't notice any difference.
What plans and devices are eligible for OneNumber?
Plan eligibility
You can get OneNumber if you're on a latest Pay Monthly plan
or Business mobile plan
, including companion plan.
OneNumber is also available on a Red Share for Business plan. Right now, there's no OneNumber available for Prepay customers.
OneNumber is also available on a Red Share for Business plan. Right now, there's no OneNumber available for Prepay customers.
Compatible cellular watches
Apple: Apple Watch Series 4 or newer (GPS + Cellular) with watch OS 10.1 or later.
GPS + Cellular Apple Watches will have a red circle on the side dial.
Samsung: Samsung Galaxy Watch5 or newer
Checking Galaxy Watch5 Compatibility
We can't guarantee a watch not purchased from One NZ or partner channels will work on our network. Parallel imported watches may not be compatible.
GPS + Cellular Apple Watches will have a red circle on the side dial.
Samsung: Samsung Galaxy Watch5 or newer
Checking Galaxy Watch5 Compatibility
- Ensure Galaxy Watch5 has the latest software
- Pull down from the top of the screen and select Settings
- Select Software Update
- Select Download and Install and follow the instructions
- Repeat the above until the Watch5 updates to the latest version and "You Watch is up to date" is displayed on the screen
- Ensure Galaxy Watch5 correct software variant
- Pull down from the top of the screen and select Settings
- Select About Watch
- Select Software information
- Tap Software version five times to enable developer mode. Check the last three letters of the software version end in XNZ.
We can't guarantee a watch not purchased from One NZ or partner channels will work on our network. Parallel imported watches may not be compatible.
Compatible phones
Apple: An Apple Watch will need a compatible iPhone XS or later with iOS 17.1 or later.
(Any beta versions or older, locked, or jailbroken devices are currently not supported for OneNumber. Customers on Beta software must wait for a Beta update or the software update to 17.2 before being able to active OneNumber.)
Samsung: A Samsung Galaxy Watch will need a Samsung phone with Android 10 or later.
We can't guarantee a phone not purchased from One NZ or partner channels will be compatible. Other brands and parallel imported phones may not be compatible.
(Any beta versions or older, locked, or jailbroken devices are currently not supported for OneNumber. Customers on Beta software must wait for a Beta update or the software update to 17.2 before being able to active OneNumber.)
Samsung: A Samsung Galaxy Watch will need a Samsung phone with Android 10 or later.
We can't guarantee a phone not purchased from One NZ or partner channels will be compatible. Other brands and parallel imported phones may not be compatible.
How does OneNumber work?
What you can do on your watch
- Call, TXT and use data.
- Sync contacts from your phone.
- Make emergency calls to 111.
- Use call forwarding and voicemail.
- Roam overseas (limited functionality*).
- Receive emergency mobile alerts.
*At the time OneNumber launched, full roaming capability was not be available. Initial capability is limited to:
Apple
- Calls - Cannot be made or received when roaming. Wi-fi calling is possible.
- TXTs - Are able to be sent and received if the primary phone is on and the watch has a cellular connection to the roaming network or is connected to the phone via Bluetooth.
- Data - Can be used when roaming on a 4G network only, but not when romaing in the USA.
Samsung
- Calls - Are able to be made and received, but only on a 3G network, and not when roaming in the USA.
- TXTs - Are able to be sent and received if the primary phone is on and the watch has a cellular connection to the roaming network or is connected to the phone via Bluetooth.
- Data - Can be used when roaming on 3G and 4G network, but not when roaming in the USA.
What you can't do on your watch
- Hotspot or tether.
- Send/receive TXT messages via the default (native) messaging app if the primary phone isn't switched on.
- Apple Watch does not support 4G to 3G handover, so calls will be dropped when moving from a 4G to 3G cellular network and vice versa.
- With Apple Watch you can have one call on your phone, and a different call on your watch if both devices are connected to the cellular network and one is on Wifi Calling.
Daily Roaming charges
Daily Roaming charges can be activated by using either your phone or watch. However, you will only get charged the Daily Roaming price once (not per device).
Number of watch connections
You can only have one watch/OneNumber add-on per eligible Pay Monthly plan.
You can connect your two watches to separate mobile plans. For example, if you use one plan for business calls and another plan for personal calls you can have one watch linked to your business Pay Monthly plan and one watch to your personal Pay Monthly plan.
You'll need to follow the steps to activate with each watch separately.
You can connect your two watches to separate mobile plans. For example, if you use one plan for business calls and another plan for personal calls you can have one watch linked to your business Pay Monthly plan and one watch to your personal Pay Monthly plan.
You'll need to follow the steps to activate with each watch separately.
Splitting Bills
If your watch is connected to your business account number, you won't be able to pay for OneNumber yourself. This is because OneNumber is billed with the Pay Monthly mobile plan it's linked to.
Reach out to the My One NZ account holder of your mobile plan to find a solution.
Reach out to the My One NZ account holder of your mobile plan to find a solution.
Two mobile plans- purchasing OneNumber for the correct one
Do you have two mobile plans on your phone? - one for work and one for personal use?
Making sure you buy OneNumber for the correct mobile plan is easy. Simply follow the prompts in your watch app and select which mobile number you want to activate OneNumber for.
Making sure you buy OneNumber for the correct mobile plan is easy. Simply follow the prompts in your watch app and select which mobile number you want to activate OneNumber for.
You should Know
Privacy and Security Measures
OneNumber employs encryption and secure authentication protocols to ensure the privacy and security of your calls and messages.
We recommend you keep your devices updated with the latest software updates and follow best practices for device security to enhance protection.
See iPhone Support for software update information.
We recommend you keep your devices updated with the latest software updates and follow best practices for device security to enhance protection.
See iPhone Support for software update information.
eSIM
For more information about eSIMs, check our eSIM FAQs
How to activate or change OneNumber?
If you need to activate OneNumber or make a change to it, follow the appropriate article here: