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With WiFi Calling it’s easy to make and receive calls and texts in any location covered by WiFi across NZ or overseas, even when you have a weak or no mobile signal.
It works like a normal call, plus there’s no additional charge for One NZ customers as it will come out of your plan’s minutes.
Easy to set up and even easier to use, simply check you have a compatible mobile phone that’s been updated with the latest software, then turn on WiFi Calling in your phone’s settings.
See below for more information including supported phones and frequently asked questions.
Easy to use
It's simple to set-up, you just need to check that WiFi Calling is turned on in your phone settings.
More access
Connect inside or outside without a fuss – WiFi Calling connects automatically if you're connected to WiFi and have a weak mobile signal.
No extra cost
WiFi Calling is free for One NZ customers to use. All calls you make come out of your allowance as usual
Check out our supported phones
The phones (and devices) shown below support WiFi Calling and SMS over WiFi, when bought from One NZ. Phone and devices bought from third parties or other NZ telecommunications companies might not be compatible with WiFi Calling.
Over time, as new software is released and updated on phones, we expect more devices to be enabled for WiFi Calling.
Over time, as new software is released and updated on phones, we expect more devices to be enabled for WiFi Calling.
iPhone
Please note: iOS 15 or later required.
- iPhone 17 Pro Max
- iPhone 17 Pro
- iPhone 17
- iPhone 17e
- iPhone Air
- iPhone 16 Pro Max
- iPhone 16 Pro
- iPhone 16 Plus
- iPhone 16
- iPhone 16e
- iPhone 15 Pro Max
- iPhone 15 Pro
- iPhone 15 Plus
- iPhone 15
- iPhone 14 Pro Max
- iPhone 14 Pro
- iPhone 14 Plus
- iPhone 14
- iPhone 13 Pro Max
- iPhone 13 Pro
- iPhone 13 mini
- iPhone 13
- iPhone 12 Pro Max 5G
- iPhone 12 Pro 5G
- iPhone 12 mini 5G
- iPhone 12
- iPhone 11 Pro Max
- iPhone 11 Pro
- iPhone 11
- iPhone 8 Plus
- iPhone 8
- iPhone 7 Plus
- iPhone 7
- iPhone 6s Plus
- iPhone 6s
- iPhone SE (3rd Generation)
- iPhone SE (2nd Generation)
- iPhone SE
- iPhone XR
- iPhone XS Max
- iPhone XS
- iPhone X
Samsung
Please note: Samsung Galaxy A01 Core (SM-A013G) does not support WiFi Calling due to hardware limitations.
- Galaxy S26 Ultra
- Galaxy S26+
- Galaxy S26
- Galaxy S25 Ultra (dual SIM)
- Galaxy S25+
- Galaxy S25 FE
- Galaxy S25
- Galaxy S24 Ultra
- Galaxy S24+
- Galaxy S24 FE
- Galaxy S24
- Galaxy S23 Ultra
- Galaxy S23+
- Galaxy S23 FE (dual SIM)
- Galaxy S23
- Galaxy S22 Ultra 5G
- Galaxy S22+ 5G
- Galaxy S22 5G
- Galaxy S21 Ultra 5G
- Galaxy S21+ 5G
- Galaxy S21 FE 5G
- Galaxy S21 5G
- Galaxy S20 Ultra
- Galaxy S20+ 5G
- Galaxy S20+ 4G
- Galaxy S20 FE
- Galaxy S20 FE 4G (SnapDragon Chip)
- Galaxy S20
- Galaxy S10+
- Galaxy S10
- Galaxy S10e
- Galaxy Z Fold7
- Galaxy Z Fold6
- Galaxy Z Fold5
- Galaxy Z Fold4
- Galaxy Z Fold3 5G
- Galaxy Z Fold2 5G
- Galaxy Z Fold 4G
- Galaxy Z Flip7 FE
- Galaxy Z Flip7
- Galaxy Z Flip6
- Galaxy Z Flip5
- Galaxy Z Flip4
- Galaxy Z Flip3 5G
- Galaxy Z Flip 5G
- Galaxy Z Flip
- Galaxy Note20 Ultra 5G
- Galaxy Note20 Ultra 4G
- Galaxy Note20 5G
- Galaxy Note20 4G
- Galaxy Note10+ 5G
- Galaxy Note10+
- Galaxy Note10
- Galaxy A90 5G
- Galaxy A80
- Galaxy A73 5G
- Galaxy A72
- Galaxy A71
- Galaxy A70
- Galaxy A57 5G
- Galaxy A56 5G
- Galaxy A55 5G
- Galaxy A54 5G
- Galaxy A53 5G
- Galaxy A52
- Galaxy A51
- Galaxy A50
- Galaxy A37 5G
- Galaxy A36 5G
- Galaxy A35 5G
- Galaxy A34 5G
- Galaxy A33 5G
- Galaxy A32 5G
- Galaxy A32 4G
- Galaxy A31
- Galaxy A30
- Galaxy A26 5G
- Galaxy A25 5G
- Galaxy A24 4G
- Galaxy A23
- Galaxy A22 5G
- Galaxy A22 4G
- Galaxy A21s
- Galaxy A20
- Galaxy A17 5G
- Galaxy A17
- Galaxy A16 5G
- Galaxy A16
- Galaxy A15 5G
- Galaxy A14 5G
- Galaxy A14
- Galaxy A13
- Galaxy A12 4G (MTK)
- Galaxy A12 4G (Exynos)
- Galaxy A11
- Galaxy A10
- Galaxy A07
- Galaxy A06 4G
- Galaxy A05s
- Galaxy A05
- Galaxy A04 4G
- Galaxy A03s
- Galaxy A03
- Galaxy A02s
- Galaxy A01
- Galaxy XCover7 Pro
- Galaxy XCover7
- Galaxy XCover6 Pro
- Galaxy XCover 5
- Galaxy XCover Pro
- Galaxy XCover4s
- Galaxy Tab Active 5 5G
- Galaxy Tab Active 4 Pro
- Galaxy Tab S10 Ultra 5G
- Galaxy Tab S10+ 5G
- Galaxy Tab S9 Ultra 5G
- Galaxy Tab S9+ 5G
- Galaxy Tab S9 FE+ 128GB 5G
- Galaxy Tab S9 FE 128GB 5G
- Galaxy Tab S9 5G
- Galaxy Tab S8 Ultra
- Galaxy Tab S8+
- Galaxy Tab S8
- Galaxy Tab A9+ 5G
- Galaxy Tab A9 4G
- Galaxy Tab A8
- Galaxy Tab A7 Lite 8.7" 4G
- Galaxy Tab A11 + 5G
OPPO
- Find X9 Pro
- Find X9
- Find X8 Pro 5G
- Find X5 Pro
- Find X5
- Find X5 Lite
- Find X3 Pro
- Find X3 Lite
- Find X2 Pro
- Find X2 Lite
- Find N6
- Find N3 5G
- Find N2 Flip 5G
- Reno13 Pro 5G
- Reno13 5G
- Reno13 F 5G
- Reno12 Pro 5G
- Reno12 5G
- Reno12 F 5G
- Reno10 Pro 5G
- Reno10 5G
- A98 5G
- A80 5G
- A40 4G
- A38 4G
- A78 5G
- A77
- A74
- A58 4G
- A57s
- A54
- A53s
- A6x 5G
- A5 Pro 5G
- A5 5G
Motorola
- Edge 60 Pro
- Edge 60 Fusion
- Razr 60
- g56 5G
- g06
- g05
MobiWire
- Smart V26
- Smart V25
- Smart V22
- Smart P24
- Smart T23 Locked 4G
- Smart E25 4G
- Smart Green Locked 4G
One NZ/Smart
- Smart M25 4G
- Smart M23 Locked 4G
- Smart P12
- Smart E10
TCL
- Smart M26
- TAB 10L LTE Gen 4
Got a question?
What is WiFi Calling?
WiFi Calling lets you make and receive calls over WiFi when there’s a weak mobile phone signal, either in New Zealand or overseas.
All devices connected to the WiFi Calling service will also send and receive texts over WiFi. Within New Zealand, all calls will try to connect to the cellular (mobile) network first, and then try to use WiFi if the mobile signal is too weak. But if you’re overseas, then WiFi Calling will be automatically preferred.
All devices connected to the WiFi Calling service will also send and receive texts over WiFi. Within New Zealand, all calls will try to connect to the cellular (mobile) network first, and then try to use WiFi if the mobile signal is too weak. But if you’re overseas, then WiFi Calling will be automatically preferred.
How do I set up WiFi calling?
To turn on WiFi Calling, simply follow these steps:
Android: Go to your smartphone's settings, search for WiFi Calling and turn it on or off (many Android devices list WiFi Calling under Call Settings).
OPPO: Turn on WiFi Calling in Settings > SIM card & mobile data > select SIM1/SIM2 > WiFi calling
iPhone: Turn on WiFi Calling in Settings > Phone > WiFi Calling. Visit the Apple website for information about how to turn on WiFi Calling on your iPhone for detailed steps.
- First, check if your phone supports WiFi Calling, by checking the phone-list shown on this page.
- Make sure you’ve updated your phone to use the latest software.
- Turn on WiFi Calling on your phone - in your settings.
- Connect to a WiFi network.
Android: Go to your smartphone's settings, search for WiFi Calling and turn it on or off (many Android devices list WiFi Calling under Call Settings).
OPPO: Turn on WiFi Calling in Settings > SIM card & mobile data > select SIM1/SIM2 > WiFi calling
iPhone: Turn on WiFi Calling in Settings > Phone > WiFi Calling. Visit the Apple website for information about how to turn on WiFi Calling on your iPhone for detailed steps.
Is WiFi Calling going to be available on my smartphone?
We're working with phone manufacturers to determine exactly which devices will be enabled for WiFi Calling and when.
Newer-model One NZ-bought VoLTE phones and devices can use WiFi Calling. Some older model VoLTE phones such as iPhone 6 or parallel imported smartphones for example won't be able to connect due to the manufacturer settings. A non-One NZ iPhone 6S or newer model running iOS 15 should work with a One NZ SIM card.
To check if your phone can use WiFi Calling, check out our WiFi Calling compatible list. New phones will be listed as they are released for sale.
Note: WiFi Calling will became available for One NZ OneBusiness customers from December 8, 2021.
Newer-model One NZ-bought VoLTE phones and devices can use WiFi Calling. Some older model VoLTE phones such as iPhone 6 or parallel imported smartphones for example won't be able to connect due to the manufacturer settings. A non-One NZ iPhone 6S or newer model running iOS 15 should work with a One NZ SIM card.
To check if your phone can use WiFi Calling, check out our WiFi Calling compatible list. New phones will be listed as they are released for sale.
Note: WiFi Calling will became available for One NZ OneBusiness customers from December 8, 2021.
What if my phone won’t work with WiFi Calling, what can I do?
You may need to upgrade your phone to a newer device, and there will be a range of phones that will be WiFi Calling enabled, including more affordable devices. Please visit our online shop to check out new phones, and we offer a range of interest free payment options.
Does WiFi Calling cost extra?
There's no extra charge for enabling WiFi Calling if you're a One NZ customer. All calls you make use minutes from your plan allowance as usual, and international or special calling rates apply, and texts (SMS/MMS or TXT/PXT) messages will be charged as usual. Check your phone plan for more details.
What is a good WiFi Connection?
WiFi Calling requires a WiFi connection with at least 100-120 kbps bandwidth to ensure a better experience.
Note: Local interference and WiFi traffic load may impact the WiFi Calling experience at certain times.
Note: Local interference and WiFi traffic load may impact the WiFi Calling experience at certain times.
My WiFi connection isn't great; what options are available?
If you have WiFi connection issues, you may want to check out SuperWifi. Customers on eligible broadband plans can get SuperWifi for wall-to-wall WiFi guaranteed or a $100 broadband credit.
If you're using an ADSL or VDSL connection that offers a weak WiFi signal, then upgrading to fibre or wireless broadband may be the best option for you. Please contact us to discuss your individual situation further.
If you're using an ADSL or VDSL connection that offers a weak WiFi signal, then upgrading to fibre or wireless broadband may be the best option for you. Please contact us to discuss your individual situation further.
How will broadband data usage be charged when I'm using WiFi Calling?
Broadband data is needed to use WiFi Calling. Costs to use WiFi Calling will depend on whether you have a broadband connection with One NZ, in addition to a mobile plan with One NZ.
For One NZ broadband customers (fibre, wireless broadband, VDSL, ADSL):
You will not be charged for broadband data used with WiFi Calling, which means you will only be charged once via your One NZ mobile phone plan. This means you can still use WiFi Calling even if you have run out of broadband data in your bundle (even if you’re not on an Unlimited data plan).
If you use any other provider for your broadband connection:
You will be incurring charges for WiFi and broadband data with that provider. This applies to Farmside customers and any companies using the One NZ network via a wholesale agreement.
For One NZ broadband customers (fibre, wireless broadband, VDSL, ADSL):
You will not be charged for broadband data used with WiFi Calling, which means you will only be charged once via your One NZ mobile phone plan. This means you can still use WiFi Calling even if you have run out of broadband data in your bundle (even if you’re not on an Unlimited data plan).
If you use any other provider for your broadband connection:
You will be incurring charges for WiFi and broadband data with that provider. This applies to Farmside customers and any companies using the One NZ network via a wholesale agreement.
Will my phone drop out when it uses WiFi Calling?
If you're using a VoLTE registered phone and are connected to the One NZ 4G or 5G network, your call should automatically transfer between WiFi and the mobile signal, which means you shouldn't get cut off while you're on the phone.
A non-VoLTE phone will use WiFi Calling in suitable conditions, but not hand in and out of cellular, so may cut out. For example: when calls try to transfer between the 2G/3G network and WiFi, they will cut out.
If you're making an important phone call, we recommend ensuring you'll be connected for the duration of the call to either: the 4G mobile network, or a WiFi network. You can find the coverage area on our website: one.nz/network/coverage/
A non-VoLTE phone will use WiFi Calling in suitable conditions, but not hand in and out of cellular, so may cut out. For example: when calls try to transfer between the 2G/3G network and WiFi, they will cut out.
If you're making an important phone call, we recommend ensuring you'll be connected for the duration of the call to either: the 4G mobile network, or a WiFi network. You can find the coverage area on our website: one.nz/network/coverage/
I bought my phone overseas. Can I use WiFi Calling?
Newer model One NZ-bought VoLTE phones can use WiFi Calling. Phones or devices bought from third parties or other NZ telecommunications companies might not be compatible with WiFi Calling. A non-One NZ iPhone 6S or newer model running iOS 15 should work with a One NZ SIM, but we can't guarantee this.
Can I use WiFi Calling to call the emergency services?
You can make emergency calls using WiFi Calling, but the phone will first try to use the mobile network (either One NZ or another mobile provider) before it uses WiFi Calling.
When you are on Flight mode with WiFi turned on, and your phone is enabled to use WiFi Calling:
When you are on Flight mode with WiFi turned on, and your phone is enabled to use WiFi Calling:
- iOS: you will be prompted to turn off Aeroplane Mode (Flight Mode) to continue the call over WiFi.
- Android: the device will switch off Aeroplane Mode (Flight Mode) and continue the call over WiFi.
Will I receive Emergency Mobile Alerts with WiFi Calling?
If you're using WiFi Calling and have One NZ mobile coverage, you will receive the Emergency Mobile Alert. But if you're using WiFi Calling in an area where you don’t have One NZ mobile coverage or Airplane mode is turned on, you won’t receive the Emergency Mobile Alert.
- For more information about the Emergency Mobile Alert, please visit the Civil Defence website.
- There is also a list of Emergency Mobile Alert capable phones on this Government website.
How will I know if WiFi Calling is being used?
An icon will be displayed on your device, at the top of your screen.
Can I use WiFi calling overseas?
Yes you can.
Just connect to any available - and turn on WiFi Calling to be able to call and TXT as if you are still in New Zealand. You don't need to turn on Roaming to use WiFi Calling so you won't be charged roaming rates however your minutes and TXTs used over WiFi Calling will come out of your mobile plan allowance.
For example if you're on a Prepay or Pay Monthly plan and call a NZ number using WiFi Calling while roaming overseas, this will come out of your plan allowance. If you call a local number in the country you're travelling in, you'll be charged the standard cost of calling an international number, like you would at home.
If you don’t have an active Prepay plan and still use WiFi Calling while overseas, you’ll be charged standard Prepay rates.
Please note: Calls will drop once you leave WiFi coverage and you will need to turn on Roaming to make a call.
Just connect to any available - and turn on WiFi Calling to be able to call and TXT as if you are still in New Zealand. You don't need to turn on Roaming to use WiFi Calling so you won't be charged roaming rates however your minutes and TXTs used over WiFi Calling will come out of your mobile plan allowance.
For example if you're on a Prepay or Pay Monthly plan and call a NZ number using WiFi Calling while roaming overseas, this will come out of your plan allowance. If you call a local number in the country you're travelling in, you'll be charged the standard cost of calling an international number, like you would at home.
If you don’t have an active Prepay plan and still use WiFi Calling while overseas, you’ll be charged standard Prepay rates.
Please note: Calls will drop once you leave WiFi coverage and you will need to turn on Roaming to make a call.