Mobile Data Roaming - The Definitive New Zealand Guide

Roaming Plans and Rates from Spark, One NZ (previously known as Vodafone), 2degrees and Slingshot Mobile Compared.

Updated 9 April 2023

Summary of Mobile Data Roaming Charges

Roaming costs are falling, and affordable deals are offered by Spark, One NZ and other networks to cover mobile data use in a number of countries. Knowing what countries are 'in the plan' is essential - data use can quickly become exorbitantly expensive.
Roaming plans have catches and pitfalls which can cost dearly - we explain what to watch out for in detail below.
Plans offer different things, but overall, One NZ offers flat-rate roaming in far more countries than Spark. The differences soon add up - if you're in Sweden, One NZ offers 200 MB for $6, whereas Spark charges its customers $3.45 or $5.75 per MB. The difference is enormous.
Finding the right plan comes down to where you are going, and how long you are going for. We have some suggested networks below for some example destinations.
If in doubt, turn off your phone's data connection - you can't be charged or use up allowances if your phone isn't connected.
If you have been stung with a big bill, there is little you can do unless your phone was stolen (and then travel insurance may assist for unauthorised use)

Our guide covers:

Disclaimer: Roaming rates and country exclusions can change at any time - while we periodically keep this guide up to date, networks can adjust their prices, terms and conditions without notice, and we accept no liability for reliance placed on this guide. Before you decide on a roaming plan, ensure you understand the details of its pricing, coverage and limitations.

MoneyHub Founder Christopher Walsh shares his views on roaming overseas:

"If I am out of New Zealand for more than a couple of weeks, I'm not keen on any of the deals offered by Spark, One NZ, 2Degrees etc. I find them expensive and limiting, and at the back of my mind, it's a risk that if you go over the allowance, you'll face a massive bill.

Instead, I do one of two things - use an international eSim (you can read about eSims here or look at the options online for travelling) or buy a local Sim.

The local Sim is an easy option for anyone without an eSim-compatible phone, and generally I prefer it. I buy a prepaid data deal with a local provider when you arrive (avoiding scammy airport kiosks unless it is owned by a network), and insert it into a spare cheap phone and hotspot to my phone, computer or any other device as I need it. This way, I pay a one-off top-up fee, get a local number (which can be useful) and avoid the risk of a bill blowout. I then ensure roaming is disabled on my primary phone, and off I go. It's cheap, cheerful and low-risk, and it's also convenient. Once I leave the country, I usually throw the Sim out. It has worked wonderfully in places like the UK, Mexico, USA, Japan, Switzerland, France, Senegal and Thailand, and I plan to keep doing it.

The plans below are published to help compare your options, but I believe they're not a good deal if you're travelling for more than a couple of weeks and need to roam without limits. However, if you're in Australia, Europe, America or Asia for a few days, then what's on offer may be sufficient and convenient".

Christopher Walsh
MoneyHub Founder

What are roaming charges?

The term ‘roaming' refers to using your phone while you're overseas. Roaming starts as soon as your phone connects to a network outside of New Zealand. In the past, New Zealanders travelling overseas were charged a significantly higher rate for using their phone to make calls or use the internet. However, things are getting better - Spark, One NZ, 2degrees and Slingshot all offer fixed-price roaming plans which cover 20-70 countries, meaning you can use data without being uncertain of the cost.
But, while this sounds like good news, there are a number of ways the unfamiliar can get caught out and stung with a big bill. Firstly, many countries are not covered in each network's plan - so you will pay the 'casual' rate, which can be as high as $10 for 1 MB of data. And, if you go beyond your roaming plan's allowance, you will be charged more. And to confuse things more, roaming plans and allowances run on New Zealand time - so if you have a 7-day plan, it doesn't run out at 11:59pm in the country you are in, but 11:59pm New Zealand time.
In this guide, we take a closer look at the pros and cons of roaming plans, and how they operate. We don't compare roaming data plans with minutes and SMS allowances. We observed that adding these does not significantly affect the cost of a plan, and in many cases, there is no difference in the overall price.

How to avoid roaming charges?

You don't need to buy a roaming plan if you are not planning to connect your phone to an overseas network. Many New Zealanders frequently travel around the world without a roaming plan, choosing instead to keep their data connections off and rely on local WIFI or using a local SIM. Both options mean you still get the benefits of being able to use apps, but no phone calls can be received - and for many people that's not a problem.

What roaming plans, top-ups and add-ons does my network offer?

No roaming plan is like the other. To make everything clear and highlight the best inclusive roaming schemes, take a look at the table below. If you want more detail about what each network offers, scroll down a bit further and we'll outline the roaming rates and plans offered by Spark, One NZ and 2dgrees in more detail.

Warning: The network plans mentioned below include a selection of popular countries which the roaming plan covers. If you're going further afield, your destination may not be covered. To avoid problems like big bills our service outage, check with your network to see what zone or band your destination(s) are classed as before deciding to buy a roaming pack. In some countries, where 1 MB can cost as much as $5 or $10, it will be cheaper to buy a local SIM or keep your data connection turned off.

Network	Who do roaming options apply to?	Cost	Destinations covered
Spark	Prepaid and Monthly customers	$25 for 2 GB (valid for 14 days) Casual rates: $11.50 for 200 MB	45
One NZ	Prepaid and Monthly customers	$8/day (monthly customers only) Prepaid: $6 for 200 MB (valid for 24 hours) $22 for 1 GB (valid for 7 days) Casual rates vary	70+
2degrees	Prepaid and Monthly customers	Daily Roaming Destination Countries (Data, Text and Call): $8 per day (1 GB of max speed data per day)	100+
Slingshot	Prepaid and Monthly customers	$32.20 for 1 GB (valid for 30 days) $20.70 for 300 MB (valid for 30 days) No casual rates	28

What does Spark offer?
Spark offers fixed-price roaming in around 40+ countries around the world as part of its 'Roaming Pack'. However, if you go over the allowance, you pay 'casual rates', or purchase another roaming data pack. Unlike One NZ's roaming data pack, Spark offers around half of the countries. You won't be covered in all of Europe; where you're not, you will be charged a hefty $3+ per MB (monthly customers) or $5_ per MB (prepay customers).

Australia:

24-Hour Roaming Pack: $8 for 24 hours with 1GB, with unlimited outgoing calls, unlimited incoming calls and unlimited texts* to Australia and New Zealand numbers.
14-Day Roaming Pack: $30 for 14 days with 2GB, with 300 minutes of outgoing calls, 300 minutes of incoming calls and 300 texts* to Australia and New Zealand numbers.
14-Day Roaming Data Pack: $25 for 14 days with 2GB

Roaming Pack pricing:

Roaming Pack: $30 for 2 GB (valid for 14 days) , 300 minutes of outgoing and incoming calls, and 300 texts with limit of 160 characters per text.
Roaming Data Pack: $25 for 2 GB (valid for 14 days)
Casual rates (if you don't buy a pack): $11.50 per 200 MB

Roaming Pack Destinations include:

In Oceania: Australia, American Samoa, Cook Islands (incl. Rarotonga), Fiji, Papua New Guinea, Nauru, Samoa, Tonga and Vanuatu
In Europe: Austria, Belgium, France, Germany, Greece, Italy (including San Marino and Vatican City), Netherlands, Portugal, Republic of Ireland, Spain, Switzerland and UK (England, Scotland, Wales, Northern Ireland, Channel Islands i.e. Jersey and Guernsey etc. and Isle of Man)
In Asia: China, Hong Kong, Indonesia, India****, Japan, Macau, Malaysia, Philippines, Qatar, Saudi Arabia, Singapore, South Korea, Taiwan, Thailand, UAE and Vietnam
In North America: Canada and USA*** (including Hawaii, Alaska, Puerto Rico and US Virgin Islands)
In South America: Argentina, Brazil and Venezuela**
In Africa: South Africa

*Note: Municipalities, independent city states within roaming countries and independent islands may not be included in Roaming Pack. Please check specific destination roaming details.
**Note: Roaming for Prepaid customers unavailable.

Renewal: Roaming Data Packs are activated after first roaming use in eligible destinations, and will expire seven days after the next New Zealand midnight, after the first roaming use or full consumption of the pack inclusions.
More details: Visit Spark's roaming rates and packages

Our view: If you're sticking to Roaming Pack countries while you travel, Spark's roaming package is more than sufficient especially when travelling for a longer days, and cheaper than One NZ's 7-day package. However, things get tricky if you're on a European trip which goes outside the Roaming Pack countries - Spark will either become inconvenient, very expensive, or both. New Zealanders often find themselves facing high costs. If this is you, you'll need to consider buying a local SIM or an eSIM.

What does One NZ offer?
One NZ offers roaming plans for both monthly 'On Account' plans, and Prepay. The number of countries included in the standard roaming plan exceeds 70, which is far superior to the plans offered by Spark, Slingshot and 2degrees.

Australia: Australian data roaming for On Account and Prepay customers are covered in the plans below.

On Account plan (for existing monthly One NZ customers):

$8/day (monthly customers only), using your current New Zealand plan's data, as well as minutes and TXT allowances.
If you run out of data, One NZ offers data top-ups
More details, including the 100+ countries covered, are outlined here.

Prepay data plan options:

$6 roaming add on - $6 for 200 MB (valid for 24 hours)
$22 roaming add-on - $22 for 1 GB (valid for 7 days)

Renewal: Roaming Add-Ons are valid until midnight NZ time. If you purchased the Daily Add-On before midnight NZ time, you will be able to use it until midnight NZ time the next day. If you purchased the Weekly Add-On before midnight NZ time, you will be able to use it for the next 7 full days (NZ time). One NZ confirms via SMS when your bundle is due to expire.
Casual rates (i.e. no plan): 50 cents per MB (Australia), $10 per MB (rest of world).
More details: Visit One NZ's prepay roaming rates and packages

Our view:

One NZ outperforms every other network with its list of 100+ destination countries for account plan holders when the changes are implemented. This allows multi-country travel a lot easier if the destinations are included in the roaming plan.
If you're a prepay customer and heading to one destination, One NZ has become cheaper ($22 per 1 GB, vs Spark's $25).
One NZ's $6 daily plan will be cheaper than having a monthly plan. However, you may want to consider having a monthly plan to take advantage of the 100+ destination countries. Taking this option can work out cheaper if you want the freedom to use your normal data limit without worrying about a 1 GB plan limit.

What does 2degrees offer?
$8 daily roaming includes data usage, unlimited texts and outgoing calls to the following countries and New Zealand:
Anguilla, Antigua & Barbuda, Argentina, Aruba, Australia, Austria, Barbados, Belgium, Bermuda, Brazil, British Virgin Islands, Bulgaria, Canada, Cayman Islands, Chile, China, Colombia, Cook Islands (additional $1.15/min to receive calls^), Costa Rica, Cote D'Ivoire (Ivory Coast), Croatia, Cyprus, Czech Republic, Denmark, Dominica, Dominican Republic, Ecuador, El Salvador, Estonia, Fiji (additional $1.15/min to receive calls^), France, Germany, Ghana, Greece, Grenada, Guatemala, Guernsey, Guyana, Haiti, Hong Kong, Hungary, India, Indonesia, Ireland, Isle of Man, Israel, Italy, Jamaica, Japan, Jersey, Kenya, Latvia, Liechtenstein, Lithuania, Luxembourg, Macau, Macedonia, Malaysia, Malta, Mexico, Mongolia, Montenegro, Montserrat, Morocco, Nauru (additional $1.15/min to receive calls^)*, Nepal, Netherlands, Norway, Panama, Papua New Guinea (additional $1.15/min to receive calls^), Peru, Philippines, Poland, Portugal, Puerto Rico, Qatar, Romania, Samoa (additional $1.15/min to receive calls^), San Marino, Saudi Arabia, Serbia, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Sweden, Switzerland, Taiwan, Thailand, Tonga (additional $1.15/min to receive calls^), Turkey, Turks & Caicos, United Arab Emirates, United Kingdom, United States, Uruguay, Vanuatu (additional $1.15/min to receive calls^), Vatican, and Vietnam.

Note: When roaming in Fiji, Cook Islands, Western Samoa, Vanuatu, Tonga and Papua New Guinea it costs $1.15 per minute to receive calls on your device. Calls rounded up to next whole minute. In most cases it's best for you to call your family and friends.
*Additional $1/min to receive calls

Destinations not listed above requires a $50 Roaming Add-On and the following charges apply:

$3.45 per minute to call anywhere in the world**
$1.15 per minute to receive any call
$0.91 a text sent to anywhere in the world**

**Does not include premium or satellite numbers.

Renewal: In $8 per day roaming destinations, the daily rate applies each day you use your phone, including to make or receive calls (including via voicemail), send texts or use data. 300kbps max speeds apply in some destinations. After 1GB of max speed data per day max speeds reduce to 128Kbps. A day is 00:00 to 23:59 NZ time.

More details: Visit 2degrees' roaming rates

Our view:

2degrees offers competitive pricing with their Aussie on Us promo and the $8 per day roaming rate to more than 100 destination countries.

What does Slingshot mobile offer?
Slingshot offers longer validity period for both 1 GB and 300 MB roaming plans. This is fairly useful for low data users who would have to stay longer at their destination country.

International Roaming - 7 days: From $23
The International Roaming 7 day pack is only available in USA, Ireland, China, United Kingdom, Canada, Australia, Fiji, Italy, Nauru, Papua New Guinea, Samoa, Spain, Tonga, Vanuatu, American Samoa, India, South Africa, Switzerland, Vietnam, Qatar, Germany, UAE, Puerto Rico, US Virgin Islands, France, Hong Kong, Indonesia, Japan, Macau, Saudi Arabia, Singapore, South Korea, Taiwan, Thailand, Christmas Island, Malaysia, Philippines, Brazil, Argentina, Netherlands, Portugal, Greece, Austria and Belgium.

Australia Roaming - Various options, starting from $20, are outlined here.

Additional data: Not offered - customers need to purchase another global plan.
Renewal: All Slingshot Roaming Packs are one-off and do not auto-renew, and days of use are based on NZ standard time. For example, if you purchase a Pack at 9:00am on 1 January NZ standard time the Pack is valid until 11:59pm on 8 January standard NZ time.
More details: Visit Slingshot's roaming rates

Our view:

Slingshot offers roaming plans with the longest duration (30 days) which can suit customers who want to make their data last over a month of travelling and can ration their use. The countries covered in Europe is limited when compared to the One NZ roaming plan.
When it comes to pricing, $32.20 for 1 GB of data is not competitive with One NZ and Spark, although Slingshot's data is valid for 30 days.

Best Roaming Plans for Travel

1 Week in Australia

Low data user: Spark - $25 for 2 GB (valid for 14 days) - total cost = $25
High data user: One NZ - $8/day to use existing plan allowance (monthly plan customers only) - total cost = $56

2 Weeks in the UK or USA

Low data user: Spark - $25 for 2 GB (valid for 14 days) - total cost = $25
High data user: One NZ - $22 for 1 GB (valid for 7 days) or $8/day to use existing plan allowance (monthly customers only) - total cost = $44 or $112

2 Weeks in Japan

Low data user: Spark - $25 for 2 GB (valid for 14 days) - total cost = $25
High data user: One NZ - $22 for 1 GB (valid for 7 days) or $8/day to use existing plan allowance (monthly customers only) - total cost = $44 or $112

4 Weeks in Europe (including the UK)

Low data user: Spark - $25 for 2 GB (valid for 14 days) or Slingshot - $32.20 for 1 GB (valid for 30 days) - total cost = $50 or $32.20
High data user: One NZ - $22 for 1 GB (valid for 7 days) or $8/day to use existing plan allowance (monthly customers only) - total cost = $88 or $240

Roaming Bill Horrors (and 7 Ways to Avoid Them Happening to YOU)

Understand that your roaming plan will run out at 'midnight New Zealand time'...not midnight local time

Spark makes it clear: The Roaming Pack and Roaming Data Pack is activated after first roaming use in eligible destinations and will expire seven days after the next New Zealand midnight, after the first roaming use or full consumption of the pack inclusions
One NZ makes it clear: If you purchased the daily Add-On before midnight NZ time, you will be able to use it until midnight NZ time the next day. If you purchased the weekly Add-On before midnight NZ time, you will be able to use it for the next 7 full days (NZ time).
2degrees makes it clear: The applicable number of days that a 2degrees Roaming Pack is valid for is based on NZ standard time. For example, if you purchase a Globetrotter Pack at 9:00am on 1 January NZ standard time, the Pack is valid for 14 days until 11:59pm on 15 January standard NZ time.

Fixed-period plans start once purchased
If you want a 24-hour plan, 7-day plan or anything else, all networks activate your bundle as soon as you purchase it. This means if you buy a 7-day plan but take two days to get to your destination, you will only have five days of use left. Networks generally suggest you only purchase a plan when you land,

MoneyHub user Annabel describes her experience:
"My Spark week-long plan was due to run out on Monday, so I happily used the remaining 400 MB of data by browsing while I was on a train from Edinburgh to London. Little did I know that the plan ran out on Monday midnight New Zealand time, not UK time, so my 400 MB of browsing stung me with a $20 bill as I no longer has a 'pack' to use".

Loading a map sucks up lots of data and cost you dearly

Additional MB data use is costlier than a plan, but if you're connecting in a country not covered by a plan, you take a huge risk. Lost in Oslo and can't find WIFI? Loading a Google map may take 10 MB, which will cost $30 on Spark's casual rates. If you have apps updating in the background, you could find yourself using 20 MB - Spark will add $60 to your phone bill for the privilege.

MoneyHub user Benjamin describes his experience:
"We were in Oslo about to leave for New Zealand. Our data plan has run out, and I didn't renew it as we were about to get on the plane. The hotel WIFI stopped working and I needed to buy an extra bag and print out the boarding passes to save money and time at the airport. I used my phone, thought nothing of it, and arrived back in Auckland with a $250 bill for excess data use for 70 MB of data. I would happily have paid $5 or $10 or even $15, but I thought $250 was a mistake - it wasn't".

One NZ, Spark and 2degrees don't control what network your phone connects to

This means that if you don't have roaming activated, using the network you connect means you are 'legally agreeing to the charges' and will have to pay them when your bill comes. For example, if you land in Dubai, and get an SMS saying 'Welcome to Dubai, calls cost NZ$15/minute, data is $25/GB, SMS is $5 to send, free to receive...", this is exactly what you will pay.

Same Countries, Different Roaming Rates
Between Spark and One NZ, there are different roaming rates for the same country. For example, if you stop off in Dubai for five days, and use 1 GB of data, with a Spark roaming plan you will pay $20 or $15, depending on the plan you pick. If you are with One NZ, which does not offer the UAE in its standard roaming plan, you would pay $250 (as it sells 200 MB of data for $50 as part of its 'Data Angel Overseas' package). But if you go prepay, One NZ would charge an astonishing $10,000 for 1 GB.

Unlike One NZ, Spark doesn't offer all-inclusive roaming packages for customers in many European countries. If you're in any of those countries, you will pay a whopping $3+ per 1 MB if you are a Pay Monthly customer, or $5+ per 1 MB if you are a Prepaid customer.

The lesson from this is to be 100% clear on what your roaming plan covers, and to make sure you get usage updates. Many providers offer a free TXT service to notify you when you've used 80% and 100% of your data. This means you will know exactly what you're spending and what you have left in your allowance.

Not turning off data while you fly to/from New Zealand, or go near to non-roaming plan countries, is a bad idea

You may forget to hit airplane-model in the excitement of leaving New Zealand, but if you fly to Europe, or anywhere for that matter, you can incur some hefty bills. The same goes for cruises and sailboats. If you have data on, apps will connect and download, costing you money unless your plan covers the country the network is in. You can avoid this risk by setting your phone to airplane mode while flying, and being clear about what countries are covered in your plan (even if you don't plan to visit them).

Guidance from English regularity organisations suggests that mobile phones will connect to the strongest network available, and users should be careful using their phone close to a border or when flying. It states that a mobile device, unless set in 'manual network selection mode', is designed to connect a customer to the strongest mobile network available. If you are out at sea or in the air, and your phone connects to a network that is not covered by your plan, you will be charged. So even if your plan covers Montenegro but somehow you connect to an Albanian network, you will be billed for whatever data you use.

MoneyHub user Matt describes her experience:
"I flew from Singapore to London, left on data, and picked up 'Welcome to' messages from Malaysia, Oman, Azerbaijan, Turkey, Romania and Belgium. Half of these countries were not on my roaming plan, so I got a $100+ bill. It wasn't a great way to start my holiday."

Cruise ship and in-flight roaming is NOT covered by your network's roaming plan

Most networks have stopped offering in-flight roaming and instead direct you to the airline. It's a similar story for cruise ships as well. In any case, before connecting, make sure to check the costs if you’re taking a cruise or using In-flight roaming on the plane as they vary and will be different from your network's roaming rates.

If in doubt, turn off data

The easiest way to have zero roaming charges is to turn off your phone's data connection. You can never be charged if you're not connected. Plenty of free WIFI exists - hotels, cafes, bars and even on some airlines (Air New Zealand is one of them).

If you're going away for a while and/or visiting lots of countries, consider a local SIM

Europe, Japan and America all have cheap and easy-to-activate prepaid SIM deals which are far more price competitive than New Zealand network roaming charges. In Europe, mobile network Lebara is everywhere and you can get a European-roaming plan for around £20 (~NZ$40) giving you 10GB. In Japan, 14-day unlimited data plans cost around US$80 (~NZ$120) which can be much cheaper than any NZ roaming deal. Best of all, you can continue to use your apps if you turn-off data on your current SIM, and use the local SIM for your data needs.

Mobile Data Roaming Frequently Asked Questions

Deciding on whether to roam or not, and then what plan to buy, is not easy. We've prepared answers to frequently asked questions below.

What is the difference between mobile data and data roaming?

Mobile data is what your phone uses to connect to the internet, i.e. the volume of MB or GB that is sent to the phone. Data roaming is when you take your phone out of New Zealand and connect to a local network, such as Optus in Australia or T-Mobile in the USA.

What should I do with my phone when travelling internationally?

It's up to you - if you believe having access to mobile data wherever you are you will be useful, you can look at a roaming plan. If you think you can manage by only connecting to WIFI spots, then you can avoid a roaming plan. New Zealand networks make it easy to buy roaming at any time - usually an SMS message will activate it, so if you do urgently need data, plans with One NZ or Spark start at $15.

Do you get charged roaming when using WiFi?

No, as long as your data connection is disabled.

How do I avoid roaming charges?

The best way to avoid roaming charges is to turn off the data connection on your phone, password protect it so if it gets lost or stolen no one can use data, rely on WIFI hotspots and/or buy a local SIM card which will usually offer better rates for data use.

How do I know if my phone is roaming?

Your phone will display an icon if it's data connection is on - it will also show the name of the network you are connected to, although each phone has different settings and needs to be individually managed.

When should I use data roaming?

That's entirely up to you - if you need to be 'available' via email or WhatsApp 24/7, then data roaming is probably essential. If you're going on holiday and can happily travel around without a constant connection, data roaming probably isn't necessary.

Hit with a roaming bill and don't know what to do?

The reality is this - roaming charges 'out of plan' can be very high, and there is little option to avoid paying it. You may protest, but the position from the network is clear - you connected, you knew the charges, you used the service, you pay.
Yet roaming remains contentious - many people question why roaming rates cost so much when other networks, outside of New Zealand, charge a lot lower.
If you do feel as if you have been unfairly billed, you have the right to complain to your network who will consider your reasons for not wanting to pay the charges, and the merits of your claim overall.

If you have any comments to make about roaming charges, please contact our research team.

Related Guides: