3G Network

Boost Mobile uses the full coverage of the Telstra mobile network. On 31 August 2024, Telstra is closing the oldest mobile technology, 3G, and repurposing it to expand the faster 5G network.

In areas that currently only have a 3G signal, the Telstra mobile network will be extended to provide 4G coverage before the closure of the 3G network.
If we contacted you about this, it means your device might be impacted. Without taking action, you may not be able to connect to a network after 31 August 2024.

If you received an email or SMS from us, then select your device type from the last below and follow the steps to get all set up.

Follow these steps to check your device compatibility:

Check for VoLTE

Voice calls on 4G need a VoLTE capable device on 700 MHz (Band 28). Check the user manual or manufacturer's website.

Check your 4G or 5G settings

Check your device network is set to ‘automatic’

Check VoLTE settings

Check VoLTE is enabled by following these steps.

Apple devices

  1. Go to Settings. Select Mobile
  2. Go to Mobile Data Options
  3. Go to Voice and Data and select Automatic. If automatic isn’t an option, select 4G.

Android devices

  1. Go to Settings. Select Network and internet
  2. Go to Mobile Network
  3. For the Preferred network type, select Automatic. If automatic isn’t an option, select 4G.

Need a new phone?

If your device only shows ‘3G’, or it's not VoLTE-capable, you need to replace it to stay connected. Check out our range of refurb devices.

3G Internet of Things (IoT) devices will no longer connect to the Telstra mobile network from 31 August 2024.

These systems include security equipment like CCTV, EFTPOS terminals, scanners and industrial routers.

We urge you to replace those devices now, well in advance of the closure date. Our recommendation is to choose models that have been certified on the Telstra Network. Learn more about Telstra IoT/M2M Certified Embedded Modules and Integrated Devices (PDF, 394KB)

Please encourage your device manufacturer or IoT service provider to have their portfolio Telstra Network-certified by contacting Telstra at

Once the 3G network closes, any device that is only able to connect to a 3G network will no longer be able to send a signal, initiate a data session, voice call or send an SMS.

This means that if an elderly person falls down and presses their alert button and this button relies on a mobile network, the alert signal will not be transmitted. This could result in severe injury not being detected and a delay in emergency responders being able to react.

If your device supports 4G, in most cases it will continue to work. However, should your device or service, support voice - you may have an in-home unit that allows you to make voice calls to and from it – you will also need to; check with the supplier you purchased it from whether it supports Voice over LTE (VoLTE).

Some older devices that supported both 3G and 4G, do not support voice over the 4G network (LTE). If you do have a 3G-only device or one that does not support VoLTE; changing the SIM does not alter the device’s ability to access the 4G network.

We recommend you contact your supplier as soon as possible to upgrade.

Frequently asked questions

It's about providing a better experience for Boost Mobile and Telstra customers.

When 3G launched in 2006, we used our mobile devices for calls, texting and accessing basic information online. Since then, technology and the way we use our phones has significantly changed and, as a result, traffic on Telstra’s 3G network has declined significantly.

Closing the 3G network allows Telstra to repurpose spectrum expand the faster 5G network and open the door to more digital opportunities.

No, 3G-only mobile devices will not work on Telstra’s 4G network. Contact us for help with any concerns about changing devices or technology types.

No, as the Telstra mobile network will no longer have 3G mobile coverage from 31st August 2024.

Mobile devices have special roaming capabilities when calling Triple Zero (000). In instances where another carrier has 3G coverage, you may still be able to make a 000 call. However, it’s important to note that other carriers are also closing their 3G network in 2024.

It’s crucial for everyone to ensure they have a 4G/5G VoLTE capable and compatible device before 31st August 2024. We also have more information about enabling VoLTE (Voice over LTE) on your mobile phone.

Some 4G devices, particularly devices originally sourced from overseas markets, are not compatible with all of Telstra’s 4G frequencies. It’s important to make sure you select a device that is compatible with Telstra’s 4G/5G network.

If you use your device to make and receive voice calls, from 31 August 2024 it must support VoLTE, and have VoLTE enabled in the settings.

Find out more about VoLTE, including what it is, what devices are compatible, and how to check or enable VoLTE on your phone.

Voice over LTE (VoLTE) lets you make phone calls over the Telstra 4G (LTE) network.

Your mobile device will use 4G to make and receive these calls in areas where 4G (LTE) is available. When the 3G network closes on 31 August 2024, VoLTE will be required to make or receive phone calls on the Telstra mobile network. It’s important to note that:

  • 3G phones do not have VoLTE; and
  • not all 4G phones have VoLTE and/or are compatible with the Telstra network.

If you have a 3G mobile device, you must upgrade to a 4G/5G mobile device that is VoLTE capable and compatible prior to 31 August 2024.

If you already have a 4G mobile device, we strongly recommend that you check that your device is VoLTE capable and compatible. Find out
how to check and enable VoLTE

Your network experience should improve, and in most cases you’ll notice a substantial improvement in speeds when you move from 3G-only coverage to 4G coverage.

The Telstra 4G service includes greater bandwidth and is more efficient than 3G, leading to higher end-user speeds.

The speed you experience is determined by a range of factors including how close you are to a tower, how much traffic the site is carrying, if there’s any obstructions impeding the network (i.e. buildings, hills, vegetation etc.) and what sort of device you’re using.

In areas that currently only have a 3G signal, the Telstra mobile network will be extended to provide 4G coverage before the closure of the 3G network.

Telstra have been rapidly rolling out and adjusting the 4G and 5G networks over the past few years to ensure there is equivalent coverage available ahead of the 3G closure. This involves upgrading all existing 3G sites with 4G technology, adding new 4G sites, and optimising others to create equivalent 4G coverage in areas that 3G coverage exists today.      

To access the 4G network, you need to be using compatible devices.

Recycle your old device

There are several options available to help you recycle old mobiles, chargers, and accessories.

  • Use the mobile muster website to find your nearest collection point
  • Mail your old device to mobile muster for recycling. Satchels are available from your local Australia Post office or JB Hi-Fi store.