Coverage map


All amaysim mobile and data-only plans are powered by the superfast Optus 5G and 4G Plus network. The Optus Network covers 98.5% of Aussies.

Yes! All amaysim mobile and data-only plans are powered by the Optus 4G Plus Network.

Currently the Optus 4G Plus network is a data-only network. The 3G network is still used to make and receive calls so you’ll drop back to 3G signal whenever you make calls.

The Optus Mobile Network uses multiple frequencies (LTE 700 / 1800 / 2100 / 2300 / 2600 MHz) to provide coverage. Your device will need to be unlocked and compatible with at least the 2100MHz, 2600MHz or 900MHz frequencies to be used with an amaysim SIM card.

To get the best possible 4G data speeds, you’ll want a mobile device that supports the 700MHz frequency.

To make things super simple, we’ve compiled a list of some of the most popular mobile phones and tablets available in Australia that are 4G compatible.

Check out the full list of 4G compatible devices.

5G stands for "fifth generation," and it's the latest and greatest technology for mobile networks. Just like 3G and 4G before it, 5G is designed to improve your overall network experience and give you faster, more reliable internet.

Find out more about 5G here

Download speed caps are the maximum potential speed for data to download to your device. We can’t guarantee your download speed, as it will change with every use, influenced by your location, the device you're using, and network outages.

We cap our download speed so that we can give our customers access to a great network at a price they can afford.

From July 3rd 2023, new and existing customers on amaysim's $30, $40, and $50 Unlimited Mobile Plans will automatically receive 5G network access included in their mobile plan at no extra cost. There will be no change to your existing plan cycle or plan cost - but please note that download speed caps apply. You don't need to do anything, the changes will apply from your next renewal after 3rd July.

No need to worry, you'll continue to access the 4G network as normal if your device doesn't support 5G or you're not in a 5G coverage area.

If you're interested in owning a device that is 5G-compatible, check out our device store.

The short answer is "yes".

Australia's Chief Medical Officer has confirmed the safety of 5G in Australia. 

This position is supported by authorities in Australia – such as the Australian Radiation Protection and Nuclear Safety Agency (ARPANSA) – and around the world, such as the World Health Organization (WHO).

You can read the official statement here:

Also, you can find the ARPANSA website here:

And the WHO website is here:

You can control this via your mobile handset. The process may vary depending on the device you have and the operating system you're using. 

Consult your phone manufacturer website for specific instructions.

Two popular operating systems:



1. Open Settings.

2. Tap "Mobile Data Options

3. Tap "Voice and Data"

4. Tap "Voice and data"

5.You will see three options - 5G, 5G (Auto) and 4G

6. Select "4G" to turn off 5G access.



1. Navigate to Settings > Connections > Mobile networks.

2. Select Network mode.

3. You should see different network modes here. Select LTE/3G/2G (auto connect) from the list.

4. This will disable 5G connectivity on your Galaxy S21, S22, or S23 and limit connectivity to 4G LTE or lower networks.

5. You can also set your Galaxy smartphone to only connect to 4G networks. Select the LTE only option from the network menu.


1. Open the Settings app.

2. Tap SIM Card & Mobile Data.

3. Tap your SIM.

4. Tap Preferred Network Type.

5. Select 4G/3G/2G (Auto)