Best SIM-only plans in Australia (November 2024) | Compare the top 7 plans

Young woman using smartphone in Sydney
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The best SIM-only plans in Australia combine a low price with great inclusions, but with so many providers on the market, each offering different perks across three phone networks, it can be difficult to gauge what good value actually looks like.

That’s why we’re here. We’ve weighed up the best prepaid plans and the best postpaid plans, and we’ve selected seven options to consider, depending on your budget and needs. Between all of these, keep in mind that you’ll need to bring your own handset, so you may also want to read up on the best phones as well.

If you’re the type to gravitate towards bigger-name telcos like Telstra, Optus and Vodafone, you may also want to consider SIM-only options from smaller telcos, as they’ll usually offer cheaper plans, albeit utilising the networks operated by the aforementioned big three. Small telcos like Moose Mobile, Dodo and Tangerine are what we call mobile virtual network providers (MVNOs), and could offer a great way of cutting down on your monthly spending.

Let’s dive in. Here are seven of the best SIM plans in Australia.

Jump to:
Best SIM-only plan for most people – TPG 25GB data for AU$12.50 per 28-day renewal (first six renewals, then AU$25 per renewal)

Best cheap SIM-only plan – TPG 25GB data for AU$12.50 per 28-day renewal (first six renewals, then AU$25 per renewal)
Best high data plan – Circles.life 120GB data for AU$40p/m (first six months, then 50GB per month)
Best 5G SIM-only plan – iiNet 50GB data for AU$17.50 per 28-day renewal (first 6 renewals, then AU$35 per renewal)
Best SIM-only plan on the Telstra network – Belong 25GB data for AU$30p/m
Best SIM-only plan on the Optus network – Southern Phone 20GB data for AU$19p/m (first 6 months, then AU$24p/m)
Best SIM-only plan on the Vodafone network – TPG 50GB data for AU$17.50 per 28-day renewal (first six renewals, then AU$35 per renewal)

Noteworthy SIM-only deals for November 2024

We’ll get into the most noteworthy plans below, but before we get stuck in, we just wanted to bring to your attention some of the best deals currently on offer.

Best SIM-only plans: our picks

Best SIM-only plan for most people

TPG | 25GB data | 1-month expiry | AU$12.50 per 28-day renewal (first six renewals, then AU$25 per renewal)

TPG | 25GB data | 1-month expiry | AU$12.50 per 28-day renewal (first six renewals, then AU$25 per renewal)

This TPG prepaid plan is 50% off for your first six renewals, so you’ll initially pay just AU$12.50 for 25GB of data. Once that discount ends, you’ll be paying AU$25 for each 28-day renewal. TPG’s prepaid plans auto-renew every month until you cancel and they operate under Vodafone’s 4G network.

Total minimum cost is AU$12.50 | Total cost for first year: AU$225 | Yearly cost after discount: AU$300

Best cheap SIM-only plan

TPG | 25GB data | 1-month expiry | AU$12.50 per 28-day renewal (first six renewals, then AU$25 per renewal)

TPG | 25GB data | 1-month expiry | AU$12.50 per 28-day renewal (first six renewals, then AU$25 per renewal)

The best SIM-only plan is the same as the best cheap SIM-only plan? Shocker. This TPG prepaid plan is 50% off for your first six renewals, so you’ll initially pay just AU$12.50 for 25GB of data. Once that discount ends, you’ll be paying AU$25 for each 28-day renewal. TPG’s prepaid plans auto-renew every month until you cancel and they operate under Vodafone’s 4G network.

Total minimum cost is AU$12.50 | Total cost for first year: AU$225 | Yearly cost after discount: AU$300

Best high-data plan

Circles.Life | 120GB data (first six months, then 50GB) | No lock-in contract | AU$40p/m

Circles.Life | 120GB data (first six months, then 50GB) | No lock-in contract | AU$40p/m

Circles.Life usually has some really good deals running across its plans, and this big data offer is hard to look past. For the first six months of your plan, you’ll get a bonus 70GB of data per month on top of a standard 50GB allowance, coming to a total of 120GB for the first six months. After this period, the monthly data allowance will revert to 50GB, but you’ll still get up to 500GB of data rollover. Remember to use the promo code 2024WOOCT120GB at the checkout. This plan utilises the Optus 4G network.

Total minimum cost is AU$40 | Total cost for first year: AU$480

Best 5G SIM-only plan

iiNet | 50GB data | No lock-in contract | AU$17.50 per 28 day renewal (first six renewals, then AU$35 per renewal)

iiNet | 50GB data | No lock-in contract | AU$17.50 per 28 day renewal (first six renewals, then AU$35 per renewal)

iiNet and its parent company TPG have been offering tremendous value lately when it comes to prepaid phone plans, and this 50GB deal is no exception. Enjoy a huge 50GB data allowance every renewal at a low price of AU$17.50 per renewal for the first six renewals, after which the price reverts to AU$35. This plan utilises the Vodafone 5G and 4G networks with no speed cap and includes unlimited standard calls to 31 selected countries.

Total minimum cost is AU$17.50 | Total cost for first year: AU$315 | Yearly cost after discount: AU$420

Best SIM-only plan on the Telstra network

Belong | 25GB data | No lock-in contract | AU$30

Belong | 25GB data | No lock-in contract | AU$30

Telstra’s budget telco subsidiary offers some pretty great value if you want to give 5G a go. The smallest plan on offer includes 25GB of monthly data, 5G access with a 150Mbps speedcap and unlimited data rollover. It’s worth considering if you want a sensible data allowance every month and if you don’t want to spend too much on a Telstra network plan.

Total minimum cost: AU$30 | Total cost for the first year: AU$360

• Not the right plan for you? Check out our comparison of the best Telstra mobile plans.

Best SIM-only plan on the Optus network

Southern Phone | 20GB data | No lock-in contract | AU$19p/m (first six months, then AU$24p/m)

Southern Phone | 20GB data | No lock-in contract | AU$19p/m (first six months, then AU$24p/m)

Operating on the Optus 5G and 4G networks (with a 100Mbps speedcap), Southern Phone’s small 20GB data plan is an attractive option if you want to give the Optus network a go. You’ll get 20GB of data every month along with AU$50 of international call credit. The price is also discounted to AU$19 for the first six months, and will revert to AU$24 after this period.

Total minimum cost: AU$19 | Total cost for the first year: AU$258 | Yearly cost after discount: AU$288

Best SIM-only plan on the Vodafone network

TPG | 50GB data | 1-month expiry | AU$17.50 per 28-day renewal (first six renewals, then AU$35 per renewal)

TPG | 50GB data | 1-month expiry | AU$17.50 per 28-day renewal (first six renewals, then AU$35 per renewal)

TPG is offering some of the best deals among SIM-only options right now – and a six renewal discount on its 50GB prepaid plan is no exception. After blasting through the first six months, you’ll be paying what is still a fairly competitive price at AU$35 per renewal.l If you don’t feel like you need 50GB of data every month, then I direct you to the best plan at the top of this list – which is also TPG!

Total minimum cost is AU$17.50 | Total cost for first year: AU$315 | Yearly cost after discount: AU$420

Not what you want? We’ve also got a full comparison of all the best Vodafone mobile plans.

How we judge the best SIM-only phone plan

Finding the best SIM-only phone plan is a bit tricky, but our experts consider the following aspects:

Data-to-cost ratio: The two most important things when it comes to analysing a phone plan are the price and the data inclusions. In our analysis we tend to weigh telcos that offer quite a reasonable amount of data per dollar favourably, while those that offer costs and data allowances that aren’t particularly competitive don’t typically make the shortlist. This being said, as you’ll read below, we immediately consider other points when looking at plans across the Australian market.

Perks and inclusions: Often when the data inclusion is fairly low and the price high, there’ll usually be some ulterior reason: such as with Telstra, Optus and Vodafone. These ‘big three’ telcos include unlimited data structures with their postpaid deals, along with other perks like streaming service inclusions and access to the full 5G network. Data banking is also commonly offered by smaller telcos and, depending on the plan, you’ll often come across bundled-in international minutes. Once upon a time, included national calls and SMS would have also been a priority consideration, but these are typically a back of mind thing now, as unlimited calls and SMS within Australia are now very much a standard with phone plans.

Deals and special offers: Everybody loves a bargain and we’re no different. Worthwhile discounts and special offers on their monthly or renewable plans typically rank quite highly in our wrap-ups. A popular discount structure you’ll see is set out over a monthly time period, say three or six months. These discounts are great, because you don’t pay the full price and they give you an opportunity to try a telco out without committing too much money.

Network access: While 5G is currently being rolled out by Telstra, Optus and Vodafone, the incoming standard of mobile connectivity is not currently available on all phone plans. While 5G isn’t a must-have for many Australians (its primary benefit is an improvement in data speeds, with 4G still being fairly competent for on-the-go use) we do bring it into consideration if your plan has access to 5G signals.

Should I go SIM-only?

There is a flexibility benefit to going SIM-only with your phone plan. Going SIM-only allows you to save money on a month-to-month basis,cuts off your ties to a lengthy contract and may be your option of choice if you want to continue to use your current phone. Give it some thought if you want to consider a cheaper MVNO that doesn’t offer phones on a plan, too.

Should I use an eSIM?

Using an eSIM cuts out the need to remove and reinsert the SIM card tray in your smartphone, effectively minimising what is often a headache when getting a new phone. eSIMs are basically virtual SIM cards that operate within your phone – no card required – but your phone will need the functionality and your plan will need to offer eSIM access as an inclusion. Check with your telco if you can get an eSIM and check your phone model to see if it’s compatible with an eSIM.

What is an MVNO?

A mobile virtual network operator (MVNO) is a telco that does not own the network which it uses to provide mobile services to its customers. Many SIM-only providers are MVNOs, meaning they resell access to the Telstra, Optus or Vodafone networks – usually at much lower prices than the big three will offer themselves.

For this reason, you’ll find that we frequently recommend MVNOs for some of the best SIM-only plans in Australia. Some of the major MVNO brands are Amaysim (Optus), Belong (Telstra), Circles.Life (Optus) and Everyday Mobile (Telstra).

What SIM card size do I need?

There are three sizes of SIM card that you can get for your phone, and the one you need will depend on your handset. It’s been a while since the traditional, so-called standard SIM (15 x 25mm) has genuinely been the staple in new phones.

Instead, any phone you’ve bought within the last five or so years is much more likely to require a micro (12 x 15mm) or nano (8.8 x 12.3mm) SIM – the iPhone 5 was Apple’s first mobile with a nano SIM, while Samsung began using the smallest size in its Galaxy S6.

Before you purchase your new SIM, double-check the manufacturer’s website to see what size you require. And if you’re simply not sure, most networks now send out a triple SIM, so you'll get one of each size.

How much data do I need?

Because most SIM-only plans come on a lock-in contract, and you can change your plan up more easily than you could on a lengthier 24- or 36-month contract, it’s less crucial to get your data requirements perfect from the start. But if you’re considering a contract of any kind, or just put a personal pride on getting things right the first time, we’ll help you find the data sweet spot.

Firstly, check your phone to see how much data you’ve been using to date, and whether you have the tendency to use more than your current allowance every month, or less. This should provide a good estimate of how much a new plan needs, but if you’re still unsure, here's some general data-use guidance:

0-5GB: Tiny amounts of data on SIM-only plans could be a blessing or a curse. If you’re aiming for a SIM to put in a rarely used phone that will scarcely be away from Wi-Fi then this amount makes some sense. But if you end up with a plan that only has 5GB or less because your head’s turned by the incredible price, you could ultimately end up paying more if you continually go over your allowance.

5-15GB: If your phone is almost always connected to a Wi-Fi network at home, and you’re a fairly light data user during the times you’re out and about, then a data plan between 5-15GB could work for you. If you just use Google Maps, occasionally stream music and check social media, plans in this bracket will give you enough freedom to safely scroll while you’re away from Wi-Fi.

15-50GB: A report published in December 2023 by the Australian Competition and Consumer Commission (ACCC) found that the average mobile user in Australia uses 15.9GB of data a month, so phone plans in this bracket will be best for most people. If you like to stream music or videos and download podcasts when you’re on 4G or 5G, or you use map apps on a daily basis and generally have a data-intensive lifestyle, this is likely to be the cap you should be looking at. Keeping under 50GB can keep your costs affordable too.

50-100GB: You’re going to have to be a real data-drainer for more than 50GB a month to be necessary. This amount will be helpful if you download apps or other large files on the go, stream in HD, frequently use your phone as a hotspot or work from somewhere that doesn’t have Wi-Fi.

100GB-unlimited: 100GB+ plans are for the truly heavy users; let’s be frank – if you’re using this much per month, you’ve either got a serious YouTube/TikTok addiction, or you’re tethering to your phone as your only internet connection. Unlimited data plans aren’t particularly common, with the small MVNO Felix being the only telco to offer a truly unlimited mobile data plan. Felix caps its speeds at 20Mbps, which is still good for streaming video and music. But for most people, unlimited data simply isn’t necessary.

The SIM-only plans on this page are checked regularly, so make sure you visit often if you want to get the most up-to-date information on the plans that are currently available.

Zachariah Kelly
Staff Writer

Zac has been in the tech writing game for six years, having previously written for Gizmodo Australia, Canstar Blue, and The Daily Mail Australia (with articles on Nine, Junkee, Kotaku Australia and Lifehacker Australia). He’s a huge nerd with a deep passion for technology. While his main focus at TechRadar Australia is phones, monitors and peripherals, he also has a deep interest in the growing Australian EV landscape. Outside of Techradar, Zac’s a Headspace (a youth mental health organization) volunteer and an avid gamer. 

With contributions from