What is a data only SIM plan?
A data only SIM plan is used with devices like tablets, pocket Wi-Fi modems, or laptops. As the name suggests, it only contains data. This means you cannot make standard calls or send SMS with this type of plan.
It works just like mobile broadband, with the main difference being that you don’t buy the plan bundled with a new modem or pocket Wi-Fi. It is therefore a great option if you want mobile broadband but prefer to Bring Your Own (BYO) device.
How to choose the right data only SIM plan
Check coverage in your area
Since data only SIM plans run on mobile networks, it’s important that your chosen provider offers good reception where you live (or where you intend to use the service). Most providers have a coverage map on their website where you can enter your postcode to check the signal strength in your area.
Find out how much data you need
There are many different data inclusions to choose from, ranging from a few gigabytes to unlimited data. How much you need depends on how you plan to use the service.
If you plan to use it frequently – perhaps even as a replacement for fixed home internet (like the NBN) – you will need a large data inclusion or an unlimited plan. However, if you only need to connect occasionally, a smaller data allowance will likely be enough. If your usage is going to be very low, a prepaid data only SIM might offer the best value.
Decide on the contract length
Most data only SIM plans in Australia are now “month-to-month”, meaning there is no lock-in contract. This gives you the flexibility to switch providers or cancel the service whenever you wish without penalty. Some providers may still offer 12 or 24-month contracts, usually if you are purchasing a device (like a 5G modem) alongside the plan.
While less common for SIM-only deals, committing to a longer term might sometimes secure you a discount or bonus data
Compare plans
If you have followed the steps above, you should now have a few options that suit your needs. In the table at the top of the page, you can filter the results based on provider, data inclusion, and contract type. This makes it easy to compare prices and choose the best value data only SIM plan for you.
Which data only SIM plan is the cheapest?
CMobile Red 1 GB is the cheapest SIM only plan right now (checked on 21/10/26). The cost is $10.00/month when you sign a 0-month contract.
Frequently asked questions about data only SIM
A data only SIM is designed specifically for devices like tablets, iPads, mobile hotspots (dongles), and laptops. Unlike a standard prepaid or postpaid mobile plan, these SIMs don’t include a dedicated phone number for traditional calls or SMS. They are purely for getting your device online, making them a cost-effective choice if you only need internet access on the go.
While “truly” unlimited data-only SIMs are rarer in Australia than mobile plans, several providers offer “infinite” data options. Typically, you’ll get a set amount of high-speed 5G/4G data, and once that’s used up, your speeds will be capped (usually between 1.5 Mbps and 20 Mbps depending on the provider). This ensures you stay connected without hitting “bill shock” from excess data charges.
Yes, several Australian telcos offer 365 day prepaid data plans specifically for mobile broadband devices. Instead of worrying about monthly recharges, you pay an upfront fee for a large “data bank” (often ranging from 60 GB to 200 GB+) that you can use over a full year. This is a highly cost-effective “set and forget” solution, making it a popular choice for students, grey nomads, or anyone needing a reliable backup prepaid plan for an iPad or portable Wi-Fi hotspot while travelling across Australia
Yes, most data only SIM plans now include 5G access as standard, provided you have a 5G-capable device. However, some budget providers might still cap speeds or offer 4G-only plans at a lower price point. Always check the Critical Information Summary to see if 5G is included in your specific prepaid or monthly data plan. Also, keep in mind that while 5G is expanding, checking the coverage map for your specific area is still essential, especially if you’re heading regional.
Most modern tablets and laptops now support eSIM technology. Choosing an eSIM allows you to download your plan and get connected almost instantly without waiting for a physical SIM card to arrive in the mail via AusPost. If you have an older device or a standard mobile broadband dongle, you’ll likely still need a physical nano-SIM.
Technically, yes. You can put a data only SIM into a phone, and your apps (like WhatsApp, Maps, and Spotify) will work perfectly. However, keep in mind that you won’t be able to make traditional cellular calls or send standard texts. You’ll have to rely on data-based services like FaceTime, Messenger, or Skype for communication.
