Mobile network providers in New Zealand and around the world are shutting down 3G networks to make way for faster and more power efficient 4G and 5G technology. This means customers who are still using 3G reliant devices, not just phones, will need to update device settings or upgrade to a newer device before the networks are switched off to retain connectivity.
If you are affected, there is support available to make this transition and ensure you stay connected. This page will explain everything you need to know about the 3G shutdown and how it might affect you.
What is 3G and why is it being shut down?
The ‘G’ in 3G, 4G and 5G stands for ‘generation’ – the third, fourth and fifth generations of mobile technology. As technology evolves over time, older generation technology types are shut down to make way for newer and faster types. Many operators around the world, including NZ, are shutting down their 3G networks.
Shutting down 3G provides more room for 4G and 5G networks, bringing with it increased consumer benefits, ranging from faster internet speeds, improved call quality, and faster media-rich data activities like video streaming. 3G technology was first introduced in NZ in 2006 and while it has been a reliable technology, closing these networks will free up radio spectrum that will be used to increase the availability of more highly capable 4G and 5G services, especially in rural areas.
When is the 3G shutdown happening?
All three mobile operators will be turning off their 3G networks in late 2025:
- 2degrees will close its 3G service in late 2025.
- One NZ will close its 3G service by 31 December 2025.
- Spark NZ will close its 3G service in late 2025.
What does this mean for customers?
Most customers won’t need to do anything as they are already using more recent 4G and 5G capable devices. Customers who are still using 3G-reliant phones may need to either upgrade their phone to a newer device or make changes to their software or settings to make sure their device continues to connect.
After the 3G shutdown devices that are 3G reliant in any way will simply no longer connect, so calls will not go through. This includes calls to the 111-emergency number. It is important that you check with your provider directly if you are unsure whether your mobile device is affected.
Some business customers also have other 3G devices that will also be affected, including lifts, vehicle trackers, alarms and other systems which may use 3G to connect. These customers should contact their suppliers to discuss whether they are affected and how they plan to upgrade them. Specific device information is available on all mobile providers’ websites, or you can contact your mobile provider directly if you have any questions or concerns.
Will I still be able to make emergency calls on older devices?
Once the 3G network is shut down, phones that are 3G reliant for data or calling will no longer connect. This will affect consumers ability to call 111 emergency services so it is important that consumer upgrade their devices.
If you are unsure if your device is 4G capable, contact your mobile provider directly for more information.
How can I check if my device is 4G ready?
Affected models vary but customers can find a list of compatible devices on your mobile provider’s website, including those models which are 3G only.
To check your mobile device is 4G-ready visit:
OTHER FAQS:
What if I didn’t purchase my phone from my mobile provider?
Some phones purchased overseas or from local importers have different specifications and may not be compatible on your mobile service provider’s network. Customers with these devices may need to change the settings to use 4G or 5G for voice. More information about this can be found :
Will my mobile work for international roaming?
Operators around the world are shutting down their 3G networks so you will need a 4G or 5G phone for mobile roaming services. For 4G or 5G voice calling when overseas, you will need to ensure that your phone supports both VoLTE (voice over 4G) and VoLTE roaming. Check on your mobile provider’s website to confirm that your 4G or 5G phone supports VoLTE and VoLTE roaming.
Find out more about international roaming here.
Do I need to change my SIM card when I upgrade to a new phone?
This may depend on the type of SIM card you have and the type of device you are upgrading to. If your old SIM card fits into the new devices’ SIM card slot, then you are sorted.
Can I recycle my old 3G device?
Yes, you can donate your old device easily and for free via the TCF phone recycling scheme RE:MOBILE, with mailing or physical drop off options which are easily accessible.
Drop your old device into any mobile store, or one of 480+other drop off locations across New Zealand, where they will be passed onto RE:MOBILE to make sure all reusable parts are recycled.
Find out more at remobile.org.nz
More information:
More information about the shutdown can be found on each providers website here:
If you are interested in further resources about the 3G shutdown, please contact the TCF via email here.