The Optus and Telstra 3G mobile networks are closing

Mobile technology has changed a lot since the 3G network was first launched back in 2003. Optus and Telstra are now closing their 3G networks and repurposing them to provide greater speed, capacity and reliability for their 4G and 5G networks.

How 3G devices will be affected

After the 3G network closes on 28th October 2024 if you are on the Telstra network, or from September 2024 if you use the Optus network, 3G services will no longer be available.

If you have a 3G device, you’ll be unable to make calls (including 000 emergency calls), send texts or access the internet using the mobile network you are currently on.

Affected devices could include mobile phones, tablets and personal medical or security devices. You’ll need to upgrade to a 4G or 5G compatible device to stay connected.

The Telstra 3G Device Checker SMS

The 3G Device Checker SMS service is a complimentary tool that you can share with your customers to help you figure out if your mobile phone is affected by the 3G network shutdown.

To check if your mobile phone is affected by the 3G network shutdown, simply text '3G' to 3498.

Check if your device will be affected

Most devices won’t be affected and will still work on the 4G and 5G network. The network closure will affect devices that:

can only operate using the 3G network
don’t support Voice over LTE (VoLTE) calls.

See if your mobile phone or tablet is in our list of commonly affected 3G devices.

Commonly affected 3G devices

Mobile phones

Alcatel 2038
Alcatel OneTouch 2045
Apple iPhone 5
Apple iPhone 5C
Apple iPhone 5S
Aspera A42
Doro 6521
Doro PhoneEasy 623 OPTUS
Google Pixel 2 XL
Huawei E5251s-2
Huawei E5331
Huawei Y6 Prime
Nokia 301
OPPO A57 (2016)
OPPO F1s
OPPO F5 Youth
Optus X Smart
Samsung Galaxy J1 Mini
Samsung Galaxy S5
ZTE Blade A0605

Tablets
iPad Air
iPad Retina
iPad mini Retina
iPad mini

Note: Due to the large number of available brands and models, we can’t provide a comprehensive list of all devices that may be affected. If you’re not sure if your device can use 4G or 5G, check with the device’s user manual or manufacturer.

If you have a device that can use 4G but doesn’t support VoLTE, it will not be able to make or receive voice calls, including 000 emergency calls on the relevant network (after 28 October 2024 for Telstra; from September 2024 for Optus).

Check your device is compatible with the LTE 700 MHz (B28) spectrum

LTE 700 MHz is the low band 4G spectrum used by Optus and Telstra for optimal 4G coverage. Not all devices are compatible with this spectrum – even recent models purchased in Australia or overseas could be affected.

4G devices that are incompatible with L700 MHz will still be able to access the Optus or Telstra network, but there will be impacts to coverage.

If you’re not sure if your device is compatible with LTE 700 MHz, check with the device’s user manual or manufacturer.

Other devices that may be affected

Personal medical or security devices that completely rely on the 3G network will stop working after 28 October 2024 if you use the Telstra network, or from September 2024 if you use the Optus network. Check with the device’s manual or manufacturer to see if this affects you and upgrade any affected devices as soon as possible.

Some impacted devices may still work but will have reduced network coverage.

3G devices: what you need to know

If your device can only use 3G, you’ll need to upgrade to a 4G or 5G device before the 3G network closure commences from 28 October 2024 if you use the Telstra network or September 2024 if you use the Optus network.

You can buy a 4G or 5G compatible device or ask your family and friends if they have a spare one you could use. Be sure to check the device’s manual or manufacturer to make sure it’s compatible.

Do I need to upgrade my mobile SIM plan as well?

No, you do not need to change your mobile SIM plan. Your new device will work on the existing plan.

Will I need a new SIM card if I change devices?

Depending on what type of device you get, you may be able to keep using your current SIM card. If your current SIM card won’t fit in your new device or you’re not sure, contact us. You might be able to use an eSIM in your new device too. See the Southern Phone eSIM guide here.

Will 4G and 5G cover locations that currently have 3G coverage?

Check out the Optus or Telstra network coverage maps for your area.

What should I do with my old 3G phone?

We recommend you recycle your old 3G phone with MobileMuster. They accept all brands of mobile phones, chargers and accessories for recycling.

They have drop-off boxes in over 3,000 stores nationwide, or you can use their free post-back options.

Visit MobileMuster

What if I’m not actively using these devices?

We understand that many customers may have already upgraded to newer devices and are no longer using the ones listed above. However, our records indicate that this service is still associated with your account and incurring monthly charges.

If you would like to know more, contact us on 1300 001 513 .

Making phone calls using VoLTE

Voice over LTE (VoLTE) lets you make phone calls over the 4G (LTE) network. Your mobile device will use 4G to make and receive calls in areas where 4G (LTE) is available.

When the Optus and Telstra 3G networks closes, VoLTE will be required to make or receive phone calls on the Optus and Telstra mobile networks.

If you have a 3G mobile device, you must upgrade to a 4G or 5G mobile device that is VoLTE compatible before your network closes.

If you have a 4G compatible mobile device that doesn’t support VoLTE, after 28 October 2024 for Telstra network users and from September 2024 for Optus network users it will not be able to make or receive voice calls, including 000 emergency calls on the mobile network you are currently on. It will still be able to use mobile data.

Make sure your 4G device has VoLTE turned on

Most devices are already VoLTE enabled, but some older devices require you to enable VoLTE.

Check that your 4G device’s VoLTE setting is turned on so you can keep making voice calls after the 3G network closes.

Check your Apple iPhone’s VoLTE settings

Go to your phone’s Settings and select Mobile or Mobile Data.
Select Mobile Data Options > Voice & Data.
If you see 4G with a VoLTE setting, make sure it’s turned on.
If you see both 4G and 5G, you don’t need to do anything – VoLTE is already enabled.

Check other devices' VoLTE settings

Refer to your user manual to check that VoLTE is enabled, as instructions may vary for different device models and types.

The Optus and Telstra 3G mobile networks are closing

Related

The Optus and Telstra 3G mobile networks are closing

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Can I still call 000?