Set yourself free with the most popular unlimited data mobile plans from our database of more than 30 mobile providers.
The best unlimited data mobile plans (June 2025)
6 min readIn this guide to the best unlimited data mobile plans in Australia:
Our relationships with telcos
We have commercial agreements with some providers in our database. When you click a 'Go to Site' button, we receive a small payment from that brand – this is how we can afford to keep comparing internet and mobile plans. But we still compare and highlight plans we receive no payments for because we believe this helps you find one that best suits your needs.
Every unlimited data mobile plans in Australia comes with a catch. Even so, these mobile plans are a good way to avoid excess fees or being cut off entirely if you accidentally go over.
Once you hit your monthly data cap, your internet is merely slowed, instead of you being charged for additional usage. You can theoretically download as much as you want, albeit at a hobbled rate. These types of plans aren’t comparatively cost-prohibitive either and are available through a number of different Australian mobile providers.
Let's take a look at the best unlimited data mobile plans available in Australia.
Best unlimited data mobile plan
Reasons to buy
- Truly unlimited data
- Unlimited national talk and text
- 5G access (still useful for coverage and congestions, despite the speed cap)
- Supports eSIM
- WiFi calling
Reasons to avoid
- Speeds always capped at 20Mbps
- International calls cost extra
- Light on special perks
- Limited Vodafone 5G network reach
Felix Mobile is the only consistently unlimited mobile data plan in Australia, albeit with a 24/7 speed cap of 20Mbps. Despite the speed cap, 20Mbps is still fit for purpose for pretty much every mobile task, including HD video streaming.
As long as you live, work and play within the Vodafone network footprint (which you probably do), this Felix Mobile plan is worth considering – especially given it’s the only truly unlimited data mobile plan in our database of more than 30 mobile providers.
Cheap unlimited data mobile plans
Felix and Vodafone are the only two telcos that offer prepaid mobile plans with speed-capped unlimited data. Outside of the Felix Mobile Unlimited Mobile Data Plan, all of the other prepaid plans from Felix and Vodafone drop to 1.5Mbps after the data allocation runs out.
Vodafone also offers speed-capped unlimited data mobile plans alongside Belong, Dodo, Optus and Telstra. Check out the cheapest unlimited data mobile plans in our database from these telcos.
These are the cheapest unlimited data plans from each unlimited data provider:
✓ How we chose these unlimited data plans
The widget above offers a snapshot of prepaid and postpaid mobile plans with unlimited calls and text and any amount of excess-charge free data allowance. These results are sorted by price and pulled from by our database of over 30 mobile providers.
Which providers offer unlimited data plans?
As mentioned above, the mobile providers in our database with unlimited data mobile plans are Belong (postpaid), Dodo (postpaid), Felix Mobile (prepaid), Optus (postpaid), Telstra (postpaid) and Vodafone (prepaid and postpaid).
They all have their own benefits and drawbacks, so we'll go over each provider's plans in more detail. But first, here's a quick summary of the broader points:
Expert Advice
In Australia, unlimited data typically means no excess charges. You’ll still get a data allowance, and then after you go through that, you can keep using your plan at much slower speeds. While an unlimited data plan is a great way to prevent bill shock, make sure you still choose a data allowance that meets your needs to avoid being stuck on very slow internet.”
WhistleOut Managing Editor
Optus unlimited data plans
Optus offers unlimited mobile plans that are more expensive but come with plenty of perks
Reasons to buy
- Endless data
- Optus 5G network access
- Data sharing
- International talk/text for most plans
- Fast reported download speeds
- Uncapped 5G speeds while within data allowance
Reasons to avoid
- Pricey starting point
- Not all plans have international talk/text
- No data rollover or banking
Unlimited mobile data with Optus SIM-only plans drops to 1.5Mbps from up to max 5G speeds. While fast enough for web browsing, online banking, instant messaging and text-based social media, 1.5Mbps is a noticeable decline in Optus 4G or 5G speeds.
All Optus SIM-only mobile plans come with unlimited national talk and text, plus data sharing for eligible plans under a single account. The pricier picks also included unlimited standard talk and text to selected dialling destinations.
Vodafone unlimited data plans
Vodafone isn't the only provider of unlimited data plans but it's still one of the cheapest
Reasons to buy
- Endless data for prepaid and SIM-only plans
- Most plans include international calls
- SIM-only network guarantee
- Prepaid data banking
Reasons to avoid
- Limited Vodafone 5G network reach (4G is almost identical to Optus)
- Not all plans include international calls
- No SIM-only data bank
Whether you’re buying a Vodafone prepaid starter pack or prepaid recharge, once the data limit is exhausted, speeds drop to 1.5Mbps. For Vodafone SIM-only (postpaid) plans, the post-data cap speeds are marginally better at 2Mbps.
All Vodafone plans included unlimited calls and texts in Australia. Vodafone prepaid plans have international inclusions, which may cover call minutes, texts or both, while most Vodafone SIM-only plans include unlimited call minutes to selected destinations.
Here's a look at Vodafone's SIM-only postpaid plans:
And here's a look at Vodafone's prepaid plans:
Telstra unlimited data plans
Telstra throws in unlimited data and a larger network at a cost.
Reasons to buy
- Uncapped Telstra 5G speeds
- Endless data
- Telstra network reach
- International talk and text
- Data sharing
Reasons to avoid
- Comparatively expensive plans
- Only 30 minutes of international calls
Telstra SIM-only plans include unrestricted 5G speeds in eligible areas with supported mobile phones, but once the data cap is exhausted, speeds slow to 1.5Mbps for the rest of the billing month.
All Telstra SIM-only mobile plans offer unlimited standard text and talk in Australia, plus unlimited texts to international numbers. International calls are restricted to 30 minutes per month, though. Telstra SIM-only plans offer data sharing, plus they also support eSIM and WiFi calling.
Belong unlimited data plans
Belong offers a budget-friendly take on unlimited data on the Telstra network
Reasons to buy
- Unlimited data banking
- Data gifting
- WiFi calling supported
- Affordable pricing
- Add unlimited international calls and text to 30 destinations for $5/mth
Reasons to avoid
- Incredibly slow 256Kbps post-cap speeds
- 5G plans are speed capped
- Middling international roaming – 3GB data, unlimited SMS, and 150 mins of calls for $30, with 15 day expiry
Belong is Telstra's budget brand whose post-data cap download speeds drop to 1Mbps, which is even slower than Optus, Vodafone and Telstra. But Belong users who don’t use all their data can at least store unlimited amounts of data with no expiry.
Alternatively, excess data can be gifted to other Belong users. All Belong mobile plans include unlimited national calls and texts. Belong plans use the Telstra wholesale network, which is slightly smaller than the main Telstra network.
Dodo unlimited data plans
Dodo offers discounted unlimited data plans with a speed limit
Reasons to buy
- All plans have international call credit
- Generous data banking
- WiFi calling supported
- Affordable pricing
Reasons to avoid
- Incredibly slow 256Kbps post-cap speeds
- Cheapest plans are 4G only
- 5G plans are speed capped
- PAYG credit international roaming
- No data sharing
All Dodo SIM-only mobile plans have unlimited data, but post-data cap speeds slow to a sluggish 256Kbps for the duration of your billing cycle. That’s only really fast enough for basic web browsing and online banking, but that’s about it.
As is the trend, Dodo plans also included unlimited calls and texts in Australia, plus they also have international call credit: the pricier the plan, the more credit you get. Dodo SIM-only plans also include data banking to store unused gigabytes.
"Endless" or "unlimited" mobile data?
Unlimited data mobile plans are also be referred to as “endless data” plans to indicate throttled speeds kick in after a max-speed or faster-speed data cap is exhausted. In the past, the ACCC has cracked down on mobile providers using “unlimited data” in reference to plans that only have unlimited data temporarily, but you can still see it from time to time.
Felix unlimited data plans
Felix has a different take on unlimited data plans that might work for you
In addition to its truly endless mobile plan, Felix Mobile also two other Vodafone 5G prepaid plans with data caps and 150Mbps typical caps. Go over the data allowance with either plan, and you’re capped at 1.5Mbps until the next recharge.
Take a look at the widget below for a snapshot of how they compare to the provider's other unlimited mobile plans.
Reasons to buy
- Truly unlimited data
- Unlimited national talk and text
- 5G access (still useful for coverage and congestions, despite the speed cap)
- Supports eSIM
- WiFi calling
Reasons to avoid
- Incredibly slow 256Kbps post-cap speeds
- 5G plans are speed capped
- Middling international roaming – 3GB data, unlimited SMS, and 150 mins of calls for $30, with 15 day expiry
Do I need an unlimited data mobile plan?
Is an unlimited mobile plan worth it?
Although the heaviest of gigabyte-guzzlers might be better served by a prepaid or SIM only mobile with a larger data allowance, unlimited data mobile plans are a great everyday option for those who want the peace of mind that comes with knowing you won't be kicked offline at in an inopportune moment.
How we choose the best unlimited data plans
There are a number of considerations when we look at the best plans with unlimited or endless data. Price is a key factor, we want to make sure we're displaying plans that offer value for money. However, it's not the only thing we consider.
We also look at what the capped speed will be, as well as how much data is included at the max speed. There's no use having an unlimited data allowance if it's too slow to stream video content or play games with low-latency and it never hurts to understand the fine print before you sign up.
Another aspect we consider when it comes to unlimited data mobile plans is network coverage. Even if the gap between Australia's big three mobile networks is smaller than its ever been when it comes to 4G, the same isn't the case for 5G. In addition, having more places to tap into your unlimited data allowance is usually better than the alternative.
Last but not least, we take a look at other inclusions like international calls, eSIM support and perks like data-banking. If you're in the market for a mobile plan with unlimited data in Australia, these aren't likely to be your primary consideration. However, with more and more providers adopting the same approach when comes to this kind of mobile plan those smaller differences can add up quickly.
Unlimited mobile data plans FAQs
Can I use unlimited mobile data if I'm overseas?
You can't use unlimited data while overseas. Instead, you'll need to purchase an international roaming pack from your provider, if they offer one.
Are there unlimited mobile broadband plans?
Unlimited mobile broadband plans (that is, data-only SIM plans) are less common than unlimited data mobile plans. Of the mobile broadband plans we track in our database, only Optus and Telstra offer unlimited data, both slowing to 1.5Mbps once a plan data cap is exhausted.
How much do unlimited data mobile plans cost?
Felix Mobile’s Unlimited Mobile Plan is a good starting point for comparisons, as it tends to hang around its $40 monthly cost. Expect unlimited data mobile plans to start at around $25 per month for a smaller data cap. For SIM-only plans, that number can stretch up to $100, while long-expiry prepaid plans can cost $300+ for a full year.
How slow is 1.5Mbps exactly?
With a 1.5Mbps speed cap, you’ll be able to carry out basic internet and social media browsing, music service streaming and potentially streaming videos in standard definition. You’ll probably find that pages will take significantly longer to load and you might have to wait for videos to buffer. In comparison, the a standard uncapped download speed on 4G is probably between 40Mbps and 50Mbps.
Does Optus have an unlimited data plan?
Yes, all Optus postpaid mobile plans come with an inclusion that the provider calls “endless data”. This works the same as the “no excess data charge” offering found with Vodafone and others.
Your mobile plan comes with a set data allowance and once that’s used up, you’ll get unlimited data at slower 1.5Mbps speeds.
Does Telstra have an unlimited data plan?
Yes, all of Telstra’s postpaid (or “Upfront”) mobile plans are free of excess data charges. Once you go over your primary data allowance, you’ll be able to keep using the plan with unlimited data but at slower 1.5Mbps speeds.
Does Belong have an unlimited data plan?
Yes, Belong has unlimited data for all of its postpaid mobile plans. Once the data cap is exhausted, speeds slow to 1Mbps for the duration of the billing cycle.
Does Vodafone have an unlimited data plan?
Yes, Vodafone prepaid and postpaid mobile plans include unlimited data. Vodafone prepaid plans drop to 1.5Mbps speeds after the data cap is exhausted, while Vodafone postpaid plans slow to 2Mbps.
Can I share my unlimited data on a data-sharing or family plan?
Sort of. It depends on your provider. For example, Vodafone will allow you to share your data allowance with other unlimited data mobile plans attached to the same account. If that's the case, then you won't be speed-capped until the entire data pool is exhausted rather than just your part of it. Telstra and Optus' data sharing setups work pretty similarly, though some of the details differ.
Can I use my unlimited data overseas?
There's only one mobile provider that lets you use unlimited mobile data while overseas and that's Vodafone. This provider's postpaid mobile plans include $5 per day roaming. If you activate this feature, you'll have access to the same data allowance you use in Australia whenever you're abroad.
Other providers, such as Telstra and Optus, use a different roaming setup that involves paying for a "block" of data and calls that comes with a more shelf life. Even if you take advantage of these roaming offers, you're technically not accessing or utilising the unlimited data part of your mobile plan.
Is there a catch to unlimited data?
There isn't a single unlimited data mobile plan in Australia that comes entirely free of caveats. The most common one is that while the amount of data you can download won't be artifically limited, the same can't be said for the speed of your connection. Felix Mobile offers the highest speed cap of 20Mbps while many other unlimited data mobile providers sit between 1.5Mbps and 2Mbps.
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