After two decades, the 3G mobile phone and data network in Australia is reaching the end of its life-cycle. The major telcos, Vodafone, Telstra, and Optus, will be switching off their 3G networks starting from December. While most people have already upgraded to 5G or 4G handsets, those still using early-2000s model phones may be wondering what this change means for them.
Let’s start with a brief explanation of what 3G is. It is the third generation of global telecommunications networks and was introduced after 1G and 2G. Over time, newer generations like 4G and 5G have replaced 3G. These networks differ in their data transfer rates, with 3G transferring information at a rate of at least 144 kilobits-per-second (kbit/s), 4G at 30 megabits-per-second (Mbit/s), and 5G at 50 Mbit/s. Although 6G technology is still in its infancy, 5G has been rolling out since 2019.
As new technologies emerge, older networks are repurposed through a process called ‘re-farming.’ In this case, the telcos are shutting down their 3G networks to support the newer networks. It is estimated that there are still between two million and three million devices reliant on the 3G network in Australia. These devices include flood monitoring systems, GPS systems on ambulances, care home dongles, and even traffic signal systems. Businesses and individuals using these devices will need to transition to newer technology before their chosen telco shuts off the 3G network.
Concerns arise for those with extremely old phones that may not even connect to 4G, let alone 5G. It is advised that owners of such devices contact the manufacturer directly to determine if their phone will be affected. The shutdown is also a significant risk for those using medical devices that rely on the 3G network. It is possible that even devices sold five years ago may lack 4G capabilities. It is crucial for those with connected medical devices to reach out to the manufacturer for information and potential alternatives.
Vodafone will be the first telco to shut down their 3G network, followed by Telstra and Optus in 2024. Vodafone has a page on their website that provides information for customers and assures them that previous shutdowns, such as the 2G network, have been successful. Telstra plans to repurpose the 850MHz spectrum currently used for 3G coverage to support their 5G rollout. However, they acknowledge that some wearable devices may experience a reduction in service areas. Optus will also shut down their 3G network and is proactive in contacting customers they believe will be affected.
Overall, if you have purchased a phone in the last five years, you likely do not need to worry as your device should connect to 4G or 5G. However, it is essential to assess the compatibility of older devices and seek assistance from your telco or manufacturer if needed. Transitioning away from 3G may be as simple as changing settings on your device for some users.
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