How does a prepaid plan work?
A prepaid mobile plan is topped up in advance, allowing you to choose exactly how much you want to spend on calls, texts, and data. You are not tied to the provider you purchase the prepaid SIM from, and can cancel the service whenever you wish. Prepaid SIMs for mobile phones are the most common, but there are also prepaid SIMs that are particularly suitable for devices like alarms and trail cameras. With some providers, you can also choose between a prepaid plan and a pay monthly plan when purchasing mobile broadband.
You can order a prepaid SIM directly from the provider’s website, but some providers also offer their prepaid SIMs in physical stores or through retailers such as petrol stations and supermarkets. If you purchase the prepaid SIM in a physical store, you may need to pay a small amount for the actual SIM card. Additionally, you may need to top up the prepaid SIM with one of the provider’s plans (often called a Combo or Pack) to be able to use it.
When you buy a prepaid plan online, the SIM card itself is sometimes free. But you can’t take that for granted, so check with your provider just to be sure.
You need to top up your SIM card
To be able to make calls, send texts, and use data, you need to top up your SIM card. Most prepaid options work by paying a fixed amount each month for a “Pack” or “Combo” that gives you unlimited minutes, texts, and a set amount of data. There may also be casual rates (standard rates), which means a certain amount is deducted per minute, text, and MB of data from the credit balance you have loaded onto the card.
When you have ordered a prepaid SIM, you will receive a SIM card for your device. The SIM card contains all the necessary information about you and your plan, and is the actual link between you and your provider.
How to choose the best prepaid plan
Choose a provider with good network coverage where you live
To get the most out of your prepaid plan, you need a provider with good network coverage in the area where you live or will use the phone the most. On many providers’ websites, you can enter your address to check their network coverage in your area.
Decide if you want a wide range of prepaid plans
The range of different prepaid solutions varies between different providers, so it’s important to start by considering what features you need. If the minutes and data you use each month varies greatly, it’s good to have several different top-up options or packs to choose from.
Decide if you want to be able to use the prepaid plan abroad
If you travel frequently and want to use the SIM card during your trip, it is important to check the provider’s roaming charges. Unlike in some other regions, using your NZ mobile plan overseas usually incurs an extra cost.
Some major NZ providers offer a “Daily Roaming” feature for popular destinations (like Australia, the UK, and the USA). This lets you use your plan’s minutes and data for a fixed daily fee. However, others require you to buy a specific ‘Roaming Pack’ for your destination. Always check what applies to your destination before you travel.
Compare prices for minutes and texts
Today, there are many prepaid plans that offer unlimited minutes and texts to NZ and Australia, but many providers also offer casual rates where you pay per minute and per text. This naturally depends on how much you plan to use your prepaid SIM, but make sure you get a plan that offers the best value for money.
Prices are generally lower with smaller providers, but that doesn’t necessarily mean their prepaid plans are the best option for you. You should ensure that the provider also meets your requirements for customer support or international usage, for example.
Which prepaid plan is the cheapest?
Skinny Standard is the cheapest prepaid plan right now (checked on 20/10/26). Top up from $5.00.
How to top up your prepaid SIM card
There are various ways to top up your prepaid SIM. The easiest way is via the provider’s website or app. Many providers also offer the option to top up by calling or texting, or by purchasing a top-up voucher at a dairy, supermarket, or petrol station.
How do I check my balance?
You can usually check the balance on your prepaid plan by logging into your account on the provider’s website, or via their app. Most providers also have specific numbers you can call or text to check your remaining credit and data allowance.
Do prepaid plans expire?
Yes, prepaid plans can expire if you do not use them at all after a certain period of time. Exactly how long you can keep a prepaid SIM card without using it varies between different providers, so check what applies with your specific provider.
The validity period also varies depending on what you buy. Prepaid “Packs” or “Combos” (which include data, minutes, and texts) generally expire after 28 or 30 days. However, the actual cash credit you top up (to pay for these packs or casual rates) usually stays valid for 12 months from your last top-up. To keep your SIM active, you typically need to make a top-up at least once a year.
Can you switch from a prepaid plan to a pay monthly plan?
Yes, if your provider offers both prepaid and pay monthly plans, switching from one to the other should not be a problem. However, the method and terms may vary slightly between different providers. Generally, you can switch your plan yourself via the provider’s website or app, but in some cases, you may need to contact customer service to make the change.
In most cases, you can keep your existing SIM card and mobile number when you switch.
If you have credit left on your prepaid SIM card when switching to a pay monthly plan, some providers transfer this as a credit to your new account, but with others, the prepaid balance might be lost during the switch. To be safe, check the process and terms with your chosen provider.
Can you use a prepaid SIM card abroad?
Yes, many prepaid plans work abroad, but it works differently than it does at home. With most providers, roaming is not automatically active, or it requires you to have enough credit to cover daily fees.
As mentioned earlier, if you are visiting a popular destination (like Australia), many providers allow you to pay a flat daily fee to use your plan’s data and minutes. If you are travelling to a country not covered by daily roaming, you will likely need to purchase a specific “Roaming Pack” or pay high casual rates per megabyte. Always review your provider’s roaming terms before you fly to avoid unexpected costs.
Frequently asked questions about prepaid plans
Yes, absolutely. Many NZ providers now offer prepaid plans with unlimited data (often marketed as endless plans). The main thing to keep an eye on is the max speed data allowance. While your data won’t actually run out, your connection speed will typically slow down (often to around 1.2 Mbps or 10 Mbps) once you’ve used your allocated high-speed data for that month. It’s a great way to stay connected without worrying about surprise overage charges.
Yes, you can “port” your existing phone number to any new provider when you switch. All you need to do is buy a new SIM card from your chosen network, and during the activation process, select the option to keep your current number. It usually takes anywhere from a few minutes to a couple of hours to complete the swap, and it’s a standard service across all NZ plans.
It’s easy to top up your account. You can use your provider’s mobile app to link a debit card for instant top-ups or set up “Auto-Renew” so the plan stays active every 4 weeks. Alternatively, you can buy top up vouchers at dairies, supermarkets, and petrol stations across the country and text the voucher code to your provider to add credit to your SIM.
Not necessarily. By 2026, almost all standard SIM cards are 5G-ready. With most providers, you can now also choose an eSIM instead of a physical card. This can be installed instantly on your phone, so you don’t have to wait for a card to arrive in the mail. As long as you have a 5G-capable device and you’re in a coverage area, you’ll get those faster speeds automatically
It depends on the plan. Many popular prepaid options in NZ offer so called “carryover data.” This means if you don’t use all your data within the month, it rolls over to the next period, often staying valid for up to a year. Just note that if you are on an unlimited or endless data plan, carryover usually doesn’t apply because your data technically never runs out.
