Better Coverage
You'll get improved network coverage across New Zealand, with Spark’s 4G network reaching around 99% of New Zealanders.
*Please note that coverage on other mobile networks may differ.
3G IS CLOSING DOWN
GOODBYE, 3G
At Mercury, our mobile services are delivered through the Spark Mobile Network. By early 2026, 3G will no longer be available; which means if your device relies on the 3G network, you will no longer be able to connect to the network for calls, texts, or data. This is part of a global move to improve technology and make sure everyone can access the fastest, most reliable service available.
WHAT DOES THIS MEAN FOR YOU?
If you’re using a 3G network device
Your mobile services will stop working once 3G is shutdown. This includes calls, texts, and data usage.
If you’re using a 4G network device
If you have received a notice from us - Your device may be relying on the 3G network for some connectivity and may need to be upgraded to ensure continuous connectivity. Use the device compatibility checker below to confirm if your mobile is 4G-ready.
Upgrade to 4G or 5G
To keep your mobile service running smoothly, you'll need to upgrade to a 4G or 5G-ready device. This will give you access to faster internet speeds and a more reliable network.
TCF'S 3G SHUTDOWN DOWNLOADABLE FACTSHEETS
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Faster Speeds
4G and 5G networks are transforming the way we connect, bringing you faster internet speeds that make downloading, streaming, and browsing a better experience.
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Future-Proof Your Connection
4G and 5G networks offer a more reliable service, meaning smoother video streaming with less buffering and fewer dropped calls when you’re catching up with friends and family.
CHECK IF YOU NEED TO REPLACE YOUR MOBILE PHONE
Have a question?
3G, or "third generation," was one of the first mobile networks to support internet browsing and app use. It was a big step up from 2G, which mainly handled calls and texts.
The 3G network is being phased out to make way for newer technologies like 4G and 5G, which offer faster speeds, better coverage, and a more reliable service. The current 3G network relies on limited radio frequencies, which are essential for the rollout of 5G, particularly in rural areas. So, just like many mobile network operators worldwide, Spark has decided to shut down its 3G network to concentrate on rolling out 5G coverage across Aotearoa New Zealand.
Phasing out 3G will improve mobile technology and ensure that customers get the best possible experience.
The 3G network will be phased out by early 2026. After this date, 3G devices will no longer be able to connect to the network for calls, texts, or data.
If you're still using a 3G device after the shutdown date, you will no longer be able to make or receive calls, send texts, or use mobile data. To keep connected, you'll need to upgrade to a 4G or 5G-ready device.
There are plenty of 4G or 5G-ready devices available, head over to your local electronics store to explore your options.
Depending on your device, you may no longer be able to make or receive calls, send texts, or use mobile data or may experience intermittent issues depending on your location. To keep connected, you'll need to upgrade to a 4G or 5G-ready device that is compatible with all of Spark's 4G bands.
Yes, your number will remain the same when you upgrade to a 4G or 5G device.
Any current devices sold by JB Hifi, Noel Leeming, PB Tech etc. should be compatible with 4G - Noel Leeming and The Warehouse currently have budget friendly options available.
It is important if you are sourcing a phone from marketplace sites such as TradeMe or Facebook marketplace, you are checking this is compatible.
All of our Vulnerable Mobile devices support VoLTE and will work beyond the 3G Shutdown. These devices are reviewed on a regular basis and we will be in contact if your device needs to be replaced in the future.
As phones bought overseas or from local importers have different specifications, neither Mercury nor Spark can guarantee that it will work on the Spark network. If you can't connect your phone to 4G, try downloading the latest software update. If that doesn't work, you may need to replace it.
Some devices that have been purchased from overseas or were imported from overseas by retailers may not be compatible with all of the required 4G bands and/or 4G calling on the Spark Network. If you have received a notice from us advising that your device is not compatible, you will need to upgrade your device to ensure continuous connectivity.