As technology advances, the usage of 3G is declining, and hence, we are repurposing 3G to enhance the 4G network and accelerate the 5G rollout.

Starting from September 2024, the Optus 3G network will no longer be available. We will contact you directly in the upcoming weeks if your device will be impacted.

Starting from June 2024, in case you are in an area that is not covered by the Optus 3G network, you won't be able to make emergency calls to Triple Zero (000).

Additionally, from September, if your device doesn't work with our 4G network or relies on the 3G network for emergency calls, then you won't be able to make an emergency call to Triple Zero (000).

To ensure that you still have access to emergency services, we strongly recommend that you upgrade your device if you have been contacted by us.

Also, please note that it is important not to make a Triple Zero (000) call to test your device unless it is a legitimate emergency.

VoLTE technology allows voice calls to be made over a 4G network.

We'll be getting in touch with customers who may have a device that's impacted by this change. If you receive an email or SMS from us, we strongly suggest that you upgrade your device to ensure everything runs smoothly.

Of course, if you have any questions or concerns, our customer support team is always here to help. So feel free to reach out to us anytime for more information.

Many devices that rely on 3G networks use mini or micro SIM cards while the majority of 4G devices require a nano SIM. Yomojo SIM cards are triple-punched for easy conversion to nano SIM.

However, if you have an older SIM card, you can order a new one from your Dashboard by clicking the 'Get a SIM' link or through our customer service.

If you are currently using a personal medical or security device that operates on the 3G network, it will cease to function from September 2024. We strongly recommend that you reach out to the device manufacturer as soon as possible to verify if your device is affected and upgrade it to a newer version. This will ensure uninterrupted service and the continued functioning of your device.

Major Australian telcos are phasing out their 3G technologies to make way for more advanced 4G and 5G network services.

If you're thinking of switching to another mobile network, we recommend checking if they still support 3G.

And if you're not ready to upgrade your device and it relies on 3G, please note that by September 2024, you may not be able to make calls, send texts, dial triple zero (000), or browse the internet on the Optus network. It is best to contact your phone manufacturer to check if your handset supports 4G 700MHz and Voice-over-LTE.

If you have an embedded network device, it's best to reach out to the manufacturer to check if it supports 4G 700 MHz.