At Ultimate Security we are committed to bringing the latest security technology to your home and business. In the past our systems would communicate using a 3G sim card however the 3G network is being phased out, meaning all security systems must move to a 4G sim card. The 4G sim card ensures that the communication between the security alarm system and the monitoring centre is reliable and secure. It also enables the security alarm system to be monitored remotely, providing peace of mind to the property owner. This shut down is happening with all 3G services in Australia between December 2023 and September 2024.


We are dedicated to providing you with the highest level of security services, and that’s why we’re excited to introduce our 4G Upgrade initiative. As technology evolves, so do the tools we use to protect your home or business. Upgrading your alarm system from 3G to 4G is a crucial step to ensure that your security remains top-notch and uninterrupted.

Why Upgrade to 4G?

The 4G network offers a range of benefits that significantly enhance your security system’s performance and reliability:

  1. Faster Communication:4G technology provides quicker data transfer, ensuring that your alarm signals reach our monitoring centre promptly.
  2. Enhanced Reliability: With improved network stability, you can have peace of mind knowing that your security system is always connected and ready to respond.
  3. Future-Proof Security:As 3G networks are gradually being phased out, upgrading to 4G ensures that your security system remains up-to-date and compatible with the latest advancements.
  4. Advanced Features:4G enables the use of advanced security features and remote access capabilities, empowering you to stay connected and in control.


To upgrade from your current 3G alarm system to 4G, all you need to do is visit our upgrade page:


At Ultimate Security we have taken a proactive approach, putting together a complete guide to the options available to upgrade you to 4G.

It is important to start the process as soon as possible as we move closer to the shutdown period.  If you have any additional questions one of our Ultimate Security representatives can assist, simply call us on 1300 850 591.