We compared over 200 SIM-only plans to help you snap up the best deals this month.
Top pick: Light use
25GB
$12.50
per
month
$12.50/mth for first 6 months, then $25/mth. T&Cs apply.
Top pick: Everyday users
60GB
$15
per
month
Black Friday offer: $15/mth for first 6 months, then $30/mth (ends 14 Dec 2025) + double data offer (60GB/mth for first 6 months). Ends 3 Feb 2026. T&Cs apply.
Top pick: Unlimited data
Unlimited Data
At speeds up to 40Mbps
$20
per
month
Black Friday offer: $20/mth for first 4 months, then $40/mth. Use promo code UNL4. Ends 14 Dec 2025. T&Cs apply.
Top pick: 365-day
290GB
$250
per
12 months
290GB for $250 on activation, then 240GB for $300/recharge. Ends 22 Dec 2025. T&Cs apply.
Top pick: International calls
55GB
$30
per
28 days expiry
55GB for $12 for first recharge, 55GB for $30 on next 2 recharges, then 32GB for $30. Ends 17 Dec 2025. T&Cs apply.
Our team of mobile plan experts have compared 301 SIM-only mobile plans from 46 mobile providers in Australia. We've curated 6 top picks based on price, network and expert analysis. Not every SIM-only plan will suit your needs so make sure you compare your options before choosing the right one for you.
Best SIM-only plans for December 2025
Best SIM-only plan for light use: TPG Small
Best SIM-only plan for everyday users: Tangerine 30GB 5G SIM
Best SIM-only plan for power users: Tangerine 100GB 5G SIM
Best 365-day SIM-only plan: Boost $300 SIM
Best SIM-only plan with unlimited data: felix Subscription Unlimited
Best SIM-only plan for international calls: amaysim 32GB Plan
This offer from TPG will save you $75 over 6 months.
The plan also includes 100 international minutes and as many texts to 31 selected countries.
Option to sign up via an eSIM if you have a compatible handset. This takes the hassle of waiting for a physical SIM card to be delivered.
The monthly data allowance might be more than you'd need for light use, but it's still a great value plan. Some other offers may be a dollar or two cheaper, but they usually come with way less data.
The price reverts to $25 a month after 6 months. However, it still stacks up well against our $1 per GB benchmark.
Mobile network: Vodafone 4G network
Total cost over first 12 months: $225
Why we chose it
To find the best cheap SIM only plan for light use, we looked at plans that cost $25 per month or less. We then gave each plan a value score by assigning weights to a number of factors including cost per data over 12 months (including promotional offers), network coverage, international call inclusions, data rollover and Wi-Fi calling. Our top pick was chosen based on the plan with the highest value score from a Finder partner.
Best SIM-only plan for everyday users
Tangerine 30GB 5G SIM
Unlimited Calls & Text
60GB
$15 per
month
Black Friday offer: $15/mth for first 6 months, then $30/mth (ends 14 Dec 2025) + double data offer (60GB/mth for first 6 months). Ends 3 Feb 2026. T&Cs apply.
Tangerine’s latest offer will save you $90 and give you double the data over 6 months.
You can bank up to 1000GB of unused data.
Option to sign up via an eSIM if you have a compatible handset.
Includes unlimited international calls to 15 selected countries. You can also add on travel packs when heading overseas.
Save 10% off mobile plan costs each month when you bundle with Tangerine’s NBN plan.
The price and data allowance will revert to $30 for 30GB a month after 6 months.
Download speeds are capped at 150Mbps. However, this is fast enough for online activities on your phone, such as streaming and gaming.
There’s a $3.50 non-direct debit fee.
Mobile network: Wholesale Telstra 4G/5G network
Total cost over first 12 months: $270
Why we chose it
We looked at mobile plans on Finder with at least 15GB of data, which is around the average Aussies use, according to the ACCC. We’ve also capped the data allowance at 40GB to keep the monthly cost budget-friendly. We then gave each plan a value score by weighting different factors including cost per data over 12 months (including promotional offers), network coverage, international call inclusions, data rollover and Wi-Fi calling. Our top pick was chosen based on the plan with the highest value score from a Finder partner.
Best SIM-only plan for power users
Tangerine 100GB 5G SIM
Unlimited Calls & Text
200GB
$24 per
month
Black Friday offer: $24/mth for first 6 months, then $48/mth (ends 14 Dec 2025) + double data offer (200GB/mth for first 6 months). Ends 3 Feb 2026. T&Cs apply.
You’ll save $144 over 6 months with Tangerine’s latest offer. The first 6 months also come with double the data.
Option to bank up to 1000GB of unused data.
You can sign up via an eSIM if you have a compatible handset.
Includes unlimited international calls to 15 selected countries. You can also add on travel packs when heading overseas.
Bundle NBN and mobile to save 10% off SIM-only plan costs.
The price and data allowance will revert to $48 for 100GB a month after 6 months.
Download speeds are capped at 150Mbps. However, this is fast enough for online activities on your phone, such as streaming and gaming.
There’s a $3.50 non-direct debit fee.
Mobile network: Wholesale Telstra 4G/5G network
Total cost over first 12 months: $432
Why we chose it
We looked at mobile plans on Finder with over 40GB of monthly data. We then gave each plan a value score by weighting different factors including cost per data over 12 months (including promotional offers), network coverage, international call inclusions, data rollover and Wi-Fi calling. Our top pick was chosen based on the plan with the highest value score from a Finder partner.
Best 365-day SIM-only plan
Boost $300 SIM
Unlimited Calls & Text
290GB
$250 per
12 months
290GB for $250 on activation, then 240GB for $300/recharge. Ends 22 Dec 2025. T&Cs apply.
You’re essentially paying $21 a month for 24GB, which stacks up well against our $1 per GB benchmark.
There are plenty of international inclusions such as unlimited calls to 20 countries, 3600 minutes of standard calls to 30 selected countries and 3600 standard texts to any country.
It's the only small provider with access to the full Telstra network. This will make a difference if you live in or are visiting regional and rural areas of Australia.
You can buy an international roaming pack to use in selected countries.
The price and data allowance will revert to $300 for 240GB from the second recharge.
Download speeds are capped at 150Mbps, though this is fast enough for online activities on your phone.
Mobile network: Telstra 4G/5G network
Total cost over first 12 months: $250
Why we chose it
We compared mobile plans on Finder that cost $400 or less with an expiry period of 12 months or 365 days. We then gave each plan a value score by weighting different factors including cost per data over 12 months (including promotional offers), network coverage, international call inclusions, data rollover and Wi-Fi calling. Our top pick was chosen based on the plan with the highest value score from a Finder partner.
Best SIM-only plan with unlimited data
felix Subscription Unlimited
Unlimited Calls & Text
Unlimited Data At speeds up to 40Mbps
$20 per
month
Black Friday offer: $20/mth for first 4 months, then $40/mth. Use promo code UNL4. Ends 14 Dec 2025. T&Cs apply.
You’ll save $80 over 4 months with felix's latest offer.
At the moment, felix is the only provider that comes close to offering a truly unlimited data mobile plan in Australia as there are no data caps.
You can easily sign up via an eSIM if you have a compatible handset.
felix's plans are certified carbon neutral. It also plants a tree monthly for every active subscription.
Your download speeds will be capped at 40Mbps throughout. However, this is good enough for streaming Netflix in HD, scrolling through social media, browsing and more.
The price of the plan will revert to $40 a month after 4 months.
Mobile network: Vodafone 4G/5G network
Total cost over first 12 months: $400
Why we chose it
To select the best unlimited data SIM-only plan, we looked at mobile plans on Finder with no data limit. There is currently only 1 plan with no imposed limit on data so it defaulted to being the winner for this category.
Best SIM-only plan for international calls
amaysim 32GB Plan
Unlimited Calls & Text
55GB
$30 per
28 days
55GB for $12 for first recharge, 55GB for $30 on next 2 recharges, then 32GB for $30. Ends 17 Dec 2025. T&Cs apply.
This plan includes unlimited international calls and texts to 28 selected countries such as Canada, France, Germany, India, Indonesia, Singapore, New Zealand, Japan, the UK and the USA.
You’ll pay just $12 when you first sign up and get 55GB on each of the first 3 renewals.
You can bank all your unused data for future use.
Bundle mobile and internet with amaysim and save $10 a month on broadband.
Option to sign up via an eSIM if you have a compatible handset.
It won the Legendary Service award for mobile providers in the 2025 Finder Customer Satisfaction Awards.
The price will revert to $30 from the second renewal and the data allowance will drop to 32GB from the fourth renewal.
5G download speeds are capped at 150Mbps, but this is fast enough for online activities on your phone.
A 28-day expiry period means you’ll end up paying 13 bills over the year instead of 12.
Mobile network: Optus 4G/5G network
Total cost over first 12 months: $342
Why we chose it
We looked at SIM-only plans on Finder that cost under $40 per month and came with unlimited international calls to a select number of destinations. We then gave each shortlisted plan a value score by assigning weights to a number of factors, including cost per data over 12 months (including promotional offers), network coverage, data rollover and Wi-Fi calling. Our top pick was chosen based on the plan with the highest value score from a Finder partner.
We looked over 290 SIM-only plans in our database and attached a value score to each plan we compared for each category, looking at factors such as price, daily cost per gigabyte, network coverage and any applicable download speed caps, with the provider having the highest score coming out as the winner. Keep in mind, we only looked at Finder partners but they were still chosen for our best guide keep a rigid methodology in mind. Here’s a rundown of exactly how our value-scoring system works:
Cost per gigabyte. This is calculated by taking the price of the plan over 12 months divided by the amount of data (GB). The price includes any promotional offers.
Network coverage. We awarded scores depending on how wide the network coverage is across Australia.
Data rollover. We weight providers that offer data rollover higher than those that don't have this feature.
International calls. We weight providers that offer data rollover higher than those that don't have this feature. This includes those that offer unlimited calls or credit/minutes for international purposes.
Wi-Fi calling. We give weights to providers that offer Wi-Fi calling higher than those that don't have this feature.
We then assigned a weight to each of the factors in order to calculate a value score. Price and data are given the highest weighting.
2025 Finder Awards for the best SIM-only plans
As part of the 2025 Finder Awards, we selected the Best Prepaid and Postpaid Mobile Providers, based on value and data. The winners and finalists were chosen based on their cost per day, daily cost per gigabyte, network coverage and any applicable download speed caps.
Best Value Mobile Provider
Winner: Moose Mobile
Highly commended: SpinTel
Highly commended: TPG
Best Value SIM Only Mobile Provider
Winner: TPG
Highly commended: iiNet
Highly commended: Kogan Mobile
Best High Data Mobile Provider
Winner: Moose Mobile
Highly commended: Swoop
Highly commended: Belong Mobile
How do you find the best SIM only plan?
There's no one-size-fits-all approach to finding a SIM only plan. Your budget and data needs can vary depending on how you use your phone. Here are a few things to consider apart from price alone:
What network are you after?
There's no doubt Telstra's network reigns supreme in coverage. It reaches the most number of Aussies, especially if you're living outside the metro areas. That being said, if you're staying in the city, you could be better off with the lower price tags of plans on the Optus or Vodafone network.
How much data do you need?
Australians download around 14GB of data on average every month according to the ACCC. We recommend finding out how much data you use and matching a plan that fits the bill accordingly. You don't want to be paying more for data that's going to waste and to rack up any excess charges because you signed up to a much lower limit.
What plan length works best for you?
While most people are familiar with month-to-month mobile plans, long-expiry plans also exist that could help you save money by paying for your plan usage upfront. These plans last for 90–365 days but just remember you'll need to be happy to stick it out with that one provider for 3–12 months.
Do you want a no-frills plan or one packed with features?
The cheapest plans are usually those with just calls, texts and data. But if that's all you need anyway, you might as well grab these simple plans for a lower cost. If you're looking for more value, consider extra features such as international calls, data rollover or Wi-Fi calling.
Mariam Gabaji is a journalist with 13 years of experience, specialising in consumer topics like mobile services and energy costs. Her work appears in the ABC, Yahoo Finance, 9News, The Guardian, SBS, 7News, A Current Affair and Money Magazine. Mariam holds a Bachelor of Arts in Journalism and was a finalist for the 2024 and 2025 IT Journalism Award for Best Telecommunications Journalist.
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Hi, I would like to please request cheapest plan for my palliative
partner in hospital . She requires just a plan that she can receive/answer calls. Thank you for your advice.
Hi Finder, I have been treating myself with a new iphone 16 3 128g and a owatch SE 2nd Gen Cellular. I am a full time student and seeking a better mobile Esim only works for putting my iwatch and mobile phone Any recommendations, please, And thank you?
Finder
ChrisMay 6, 2025Finder
Hi Elizabeth, it sounds like you’re after an eSIM-compatible plan that can connect to both your iPhone and Apple Watch.
For our money, Southern Phone’s 20GB plan, which uses the Optus 4G/5G network, offers the best bang-for-buck.
You can currently get it for just $14 per month for the first 6 months, exclusively through Finder. The price then jumps to $24 per month but don’t stress – there’s no lock-in contract, meaning you can start shopping around before the deal ends.
The plan comes with 20GB data, unlimited calls & text and $50 international call credit. You can easily sign up for an eSIM via its website.
Check out which mobile phone providers Finder users are loving this month and the top plans they're choosing!
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Hi, I would like to please request cheapest plan for my palliative
partner in hospital . She requires just a plan that she can receive/answer calls. Thank you for your advice.
Hi Barb,
We’re very sorry to hear about your partner. You may want to consider a pre=paid plan? This is where you buy a certain amount of data/time, which could be ideal for your partner. You can get plans as low as $12.50 a month. If you’d prefer a post-paid account, you can get plans suitable for receiving calls for as low as $15 a month. Hope this helps!
Hi Finder, I have been treating myself with a new iphone 16 3 128g and a owatch SE 2nd Gen Cellular. I am a full time student and seeking a better mobile Esim only works for putting my iwatch and mobile phone Any recommendations, please, And thank you?
Hi Elizabeth, it sounds like you’re after an eSIM-compatible plan that can connect to both your iPhone and Apple Watch.
For our money, Southern Phone’s 20GB plan, which uses the Optus 4G/5G network, offers the best bang-for-buck.
You can currently get it for just $14 per month for the first 6 months, exclusively through Finder. The price then jumps to $24 per month but don’t stress – there’s no lock-in contract, meaning you can start shopping around before the deal ends.
The plan comes with 20GB data, unlimited calls & text and $50 international call credit. You can easily sign up for an eSIM via its website.