How do unlimited mobile plans work?
Unlimited mobile plans are designed for users who want to stay connected without the fear of hitting a data cap or receiving unexpected charges. In New Zealand, you can find these “no limit” features across various services, including pay monthly SIM only plans and phone plans that include a new handset.
While “unlimited” is the common term, the New Zealand market distinguishes between plans that offer maximum speeds indefinitely and those that slow down after a certain point.
Two types of “unlimited” mobile plans
- Unlimited data plans: In the NZ market, a truly unlimited plan typically means you have no data caps and, crucially, no speed caps. You can browse, stream, and download at the fastest speed your network (4G or 5G) allows, regardless of how much you use. These are often the premium tier options.
- Endless mobile plans: This is the most common type of plan in New Zealand. “endless” means you receive a set amount of “max speed” data (e.g., 60 GB or 100 GB). Once you use that up, your data doesn’t cut off; instead, your speed is throttled (slowed down) to a lower rate – usually around 1.2 Mbps (though some budget or older plans may drop to 600 Kbps).
Please note! While 1.2 Mbps is still fast enough for basic web browsing and music streaming, you will notice a significant difference when trying to watch High Definition video or downloading large files.
Pay monthly and prepaid unlimited plans – how do they differ?
The New Zealand market offers two main ways to access data on your phone, but they differ greatly when it comes to unlimited options.
- Pay monthly plans: These are monthly subscriptions where you pay via invoice. Truly unlimited data features are most common here, especially with the major networks. Most high-value pay monthly plans now include at least endless data as a standard feature.
- Prepaid plans: In NZ, you’re mostly looking at endless data för prepaid plans. This means you get a set amount of max speed data, then your speeds get throttled (usually to 1.2 Mbps) for the rest of the month. Proper unlimited plans with no speed caps are a bit rarer on prepaid and usually cost a fair bit more.
When is an unlimited mobile plan the best choice?
- You are a heavy streamer: You frequently watch Netflix, Disney+, Neon, or YouTube in HD while commuting or away from Wi-Fi.
- The phone is your primary internet source: You use your phone as a portable hotspot for your laptop or tablet because you don’t have fibre or fixed wireless at home.
- You want to avoid “bill shock”: You want the peace of mind that your monthly bill will always be the same, regardless of how much you browse.
- You are a gamer: You play data-heavy mobile games or need to download large app updates on the go.
- You frequently use video calling: You spend a lot of time on FaceTime, Zoom, or WhatsApp video calls.
Is there a limit to how much data you can use?
While you can technically use as much data as you like, providers still apply a Fair Use Policy (FUP). This prevents the network from being congested by commercial use, tethering an entire office, or automated “bot” activity.
Always check if your provider allows hotspotting (tethering) on their unlimited plans. In New Zealand, some providers include hotspotting for free, while others charge an extra monthly fee or limit the amount of data you can share with other devices.
Which unlimited mobile plan is the cheapest?
Contact Mobile Extra Small Plan is the cheapest unlimited pay monthly plan (checked on 20/10/26). The cost is $16.00/month when you sign a 0-month contract.
Get the deal at Contact Mobile
Skinny Standard is the cheapest prepaid unlimited plan right now (checked on 20/10/26). Top up from $5.00.
How to find the best unlimited mobile plan
Check if you actually need unlimited data
While it’s tempting to have unlimited data on your phone, it’s only cost-effective if you use it. For most Kiwis, an unlimited plan provides the best value if your monthly usage consistently exceeds 60 GB–80 GB. If you are mostly on Wi-Fi at home or work, a cheaper mid-range plan might be a better fit.
Compare the major networks and MVNOs
To find the best deal, compare the major providers with smaller providers and MVNOs. While the big networks often have the most truly unlimited options, smaller providers can offer very competitive endless deals.
Review the international roaming terms
In New Zealand, domestic unlimited data almost never applies when you are overseas. Most mobile plans require you to purchase a roaming pack or pay a daily fee (e.g., $8–$10/day) to use a small, specific amount of data abroad. Always check these rules if you plan on travelling.
Frequently asked questions about unlimited mobile plans
Generally, you pay a premium for the security of never running out of data. However, if you consistently pay for “data add-ons” on a cheaper plan, an unlimited option can actually save you money in the long run.
It depends on usage. For seniors who only use their phone for occasional browsing and light social media, an unlimited plan is usually unnecessary. However, for those who frequently use FaceTime or WhatsApp for long video calls with family, or who don’t have home broadband, an unlimited or endless plan offers great peace of mind.
Yes, several providers offer shared or companion plans. This allows you to have one primary unlimited plan and add multiple companion or team SIMs at a significantly reduced monthly cost, often with everyone enjoying the same unlimited or endless data benefits.
No. Your domestic unlimited data allowance is for use within New Zealand. When roaming internationally, you will usually need to buy a roaming add-on or pay a daily fee for a specific, much smaller daily data allowance.
In NZ, unlimited data is defined as a plan with no speed caps – you get the fastest available speed all the time. Endless data refers to plans that give you a chunk of max-speed data, and then continue at a throttled speed (usually 1.2 Mbps) for the rest of the month.
Yes. Most premium unlimited plans now include 5G access at no extra cost. Just make sure your phone is 5G-ready and you are in a 5G coverage zone to get the best speeds.
