Compare Mobile SIM Plans in Australia
Live offers across tracked providers in Australia — updated daily from the Giraffy database.
Live offers
- Offer: 50% off mobile plan fees for first six months
- Offer: Bundling discount
- Plug and play or configure your own modem
- 500 GB Circles.Life
- Circles Core 500GB $8/mth
What is a mobile SIM plan in Australia?
A mobile SIM plan gives you calls, texts and mobile data on one of Australia's networks. Most Australians now choose a SIM-only plan, keeping their existing handset and paying month to month rather than locking into a long device contract. Plans come as prepaid, where you pay in advance and top up, or postpaid, where you are billed after each period. Both physical SIMs and eSIMs are widely supported, and switching between providers has become quick and largely paperless.
How the Australian market works
Australia has three mobile networks: Telstra, Optus and the TPG Telecom (Vodafone) network. Almost every other brand is a mobile virtual network operator (MVNO) that resells access to one of these three. This matters because coverage depends on the underlying network, not the brand, so a budget MVNO on the Telstra wholesale network can reach the same towers as Telstra itself, often at a much lower price. Some MVNO plans, however, are capped at slower speeds or exclude the most remote coverage footprint, so the fine print is worth reading.
Benefits of a SIM-only plan
Lower monthly cost — Separating your plan from your handset usually cuts your bill and lets you upgrade phones on your own schedule rather than the carrier's.
Flexibility — Most plans are contract-free, so you can switch providers while keeping your number through the porting process, which pressures providers to stay competitive.
Large data allowances — Competition has pushed generous data inclusions, with many plans bundling unlimited standard national calls and texts and some offering data banking or bonus data for the first few recharges.
How to choose a plan
Start with coverage: check which of the three networks a provider uses against where you live, work and travel. Then weigh your monthly data needs, whether you want prepaid or postpaid billing, and any perks such as data rollover or international minutes. Look at the expiry terms on prepaid recharges, whether the headline price is an introductory rate that later rises, and confirm the plan supports eSIM if you want instant activation.
Leading providers in Australia
The brief features challengers including Dodo, Circles.Life, TPG, SpinTel, Moose Mobile, Pivotel, amaysim and Vodafone. Vodafone and TPG run on their own network, while Dodo, SpinTel and amaysim are Optus-network MVNOs and others draw on Telstra wholesale. Pivotel specialises in satellite and remote-area connectivity for rural users. The right choice balances the network that covers your area against the price, data inclusions and any contract terms.
What it costs
Plans in this comparison span roughly A$5 to A 99 per 30-day period. Entry-level small-data SIMs sit at the low end, mid-range plans with tens of gigabytes cluster in the A$20 to A$45 range, and premium large-data or long-expiry prepaid bundles reach the top. Many providers run introductory discounts for the first few recharges, so always check the ongoing price rather than the first-month figure, and note that annual prepaid packs can lower the effective monthly cost.
Protections and regulation
The Australian Communications and Media Authority (ACMA) regulates telecommunications, and the Telecommunications Consumer Protections (TCP) Code sets rules on advertising, billing and complaint handling. Disputes that a provider cannot resolve can go to the Telecommunications Industry Ombudsman (TIO) free of charge. Number portability is a legal right, so you can keep your mobile number when you switch, usually within hours.
Common questions
Can I keep my number? — Yes. You port your number to the new provider during sign-up, and it usually completes within hours without any break in service.
Does a cheaper brand mean worse coverage? — Not necessarily. An MVNO uses the same towers as the network it resells, though some plans exclude the very fastest speeds or the most remote roaming areas.
The cheapest Mobile SIM Plans in Australia is A$5 /month from TPG.
Mobile SIM Plans in Australia — FAQ
What is the cheapest SIM-only deal in Australia right now?
Giraffy tracks 5 live SIM plans across TPG,Dodo,Circles.Life AU networks in Australia. The lowest tracked price is A$5 /month. Sort by lowest price to see the cheapest options for your data needs.
Which network has the best coverage in Australia?
Coverage quality varies by area and carrier. Check each network's official coverage map before switching — indoor coverage, rural reach, and 5G availability differ significantly between operators in Australia.
What is eSIM and do I need a physical SIM card?
An eSIM is a digital SIM embedded in your device — you activate a plan without swapping a physical card. Most flagship and mid-range phones released after 2020 support eSIM. Check your device settings or ask the carrier to confirm compatibility before you switch.
Is 5G worth it on a SIM-only plan?
5G delivers significantly faster download speeds and lower latency than 4G — typically 100–500 Mbps versus 20–50 Mbps. It's worth it if your handset is 5G-capable and you're in a coverage area. Most 5G plans are now priced similarly to 4G equivalents.
Can I keep my phone number when switching networks?
Yes. In most markets you can port your number to a new network within one working day by requesting a PAC or porting code from your current provider. The switch happens automatically once you activate the new SIM.
What is the difference between prepaid and pay-monthly SIM plans?
Prepaid (pay-as-you-go) plans require no contract — you top up credit and use what you pay for. Pay-monthly plans bill you at the end of each month and typically offer more data for the same price, but require a credit check and a rolling or fixed-term commitment.
Do I need to unlock my phone before switching networks?
If your handset was purchased directly from a carrier, it may be network-locked and need unlocking before accepting a different SIM. Phones bought from manufacturers or retailers are usually unlocked. Contact your current carrier to check — unlocking is often free or available for a small fee.