One Number

Share your mobile number with your Apple Watch with One Number from Spark.

Make calls and texts straight from your watch without your phone nearby* – stay connected wherever you are.

For just $12.99 a month, the One Number Wearable Plan lets you share your primary plan's minutes and texts and get Endless data** on the watch so you can stay connected even when you leave your phone behind.

What you'll need

Eligible primary phone


iPhone 6s or later with iOS 13.3 or later installed.

Spark mobile plan


An eligible Spark Pay Monthly mobile plan that's active on your primary iPhone.

See eligible plans

Apple Watch with cellular


Apple Watch (GPS + Cellular) with watchOS 6.1.1 or later.†

Shop Apple Watches

Are you a Spark Small Business customer? Find out more about One Number for Business

If you don't have an eligible plan, you'll need to buy one first before you can get One Number. Buy a Pay Monthly mobile plan

How to activate the One Number Wearable Plan

*You can only send and receive text messages if your iPhone is turned on and connected to a WiFi or cellular network. 

**Allocated data at max speed, then speeds reduce to 1.2 Mbps, this will impact your experience. No tethering or hotspots. 

†Max 2 watches per mobile line. The Spark network doesn't support models from the North American region. Learn more about bands, supported locations and carriers at apple.com/nz/watch/cellular


Eligible options for your primary plan

  • $29.99 1GB Rollover Plan
  • $39.99 Rollover plan
  • $39.99 2.5GB Rollover plan
  • $59.99 Rollover plan
  • $59.99 10GB Rollover plan
  • $79.99 Rollover plan
  • $99.99 Rollover plan
  • Endless Mobile plan ($39.99)
  • Endless Mobile plan ($59.99)
  • Endless Mobile plan ($79.99)
  • Endless Group plan ($99.99)
  • $29.99 Companion plan
  • $29.99 Sharer
  • Gold Basic*
  • Gold Talker*

*With these plans, customers must take up the One Number Wearable Plan in order to buy a watch with interest free payments.

Spark terms apply. See One Number Wearable Plan terms

These terms apply in addition to the Spark Mobile and Wireless terms. See the Mobile and Wireless terms

Some bands are sold separately.

iPhone 6s and above with iOS 13.3 or later installed on eligible Pay Monthly mobile plan required for One Number.

If you cancel your primary mobile plan, the One Number functionality and One Number Wearable plan will automatically be cancelled and any interest free payments will need to be paid in full.

  • You’ll need your MySpark login details to sign up for a One Number Wearable Plan through the Watch app. If you don’t have a MySpark account, you can set one up at spark.co.nz/myspark/register
  • Make sure that your Apple Watch can connect to your iPhone, cellular or WiFi. Learn more from Apple
  • Your primary iPhone must be switched on, signed into an Apple ID and connected to the internet in order for the Apple watch cellular to receive text messages. The phone doesn’t need to be in range of the watch. iMessage will still work on your Apple Watch Cellular if your iPhone is switched off as long as you’re connected to the internet and signed in with your Apple ID.
  • ​Any calls made or texts sent on your Apple Watch over the Spark Network will count towards your mobile plan’s monthly usage and charges.
  • Roaming is not available on the Apple Watch. The Watch can still be connected via Bluetooth when in range or through WiFi if available, however, your phone must be in range.
  • Maximum of two cellular Apple Watches are able to be connected to one primary mobile.
  • WiFi calling is not yet supported by Spark.
  • Some network functionality and call quality may vary on the Apple Watch (GPS + Cellular).
  • Your cellular Apple Watch will automatically switch between connections to find the most power efficient option.
    • Your Apple Watch connected via Bluetooth when in range of the iPhone, saving power. It will consume the iPhone’s call, text and data allocation (unless WiFi is being used). You can switch Bluetooth off in your Watch’s settings if you wish.
    • If Bluetooth isn’t available your Apple Watch will use WiFi if available.
    • If Bluetooth and WiFi aren’t available, the Apple Watch cellular will connect to the cellular network if switched on with an active plan.
  • Some third-party streaming apps (including Spotify) may not be fully supported by Apple Watch. Read more from Spotify
  • Features are subject to change. Some features, application and services may not be available in all regions or all languages. For a complete list, visit Apple's website

If I already have a compatible cellular Apple Watch, can I sign up for One Number without buying a new watch?

Yes, you don't need to buy a cellular Apple Watch Series 5 to use One Number from Spark. You can connect your cellular Series 3 and 4 Apple Watch with the One Number Wearable Plan, as long as it is compatible with our network. Make sure you've got the latest software on your watch and your iPhone, then get set up using the Watch app on your iPhone. Or, come see us at a Spark store. How to buy the One Number Wearable Plan from Spark

How can I cancel my One Number Wearable Plan?

You can cancel your plan the same way you would cancel a regular plan. See how to cancel a plan

If I want to connect an Apple Watch with cellular to my business account number, can I pay for the One Number Wearable Plan myself?

At this time, customers who have a business account cannot add the One Number Wearable Plan to a separate account. This is because the One Number plan is billed with the primary Pay Monthly mobile plan to which it's linked. So if your phone plan is paid for by someone other than you, we're not able to add the One Number plan to your account. We recommend reaching out to the MySpark account holder of your mobile plan to find a solution.