Cheapest Optus SIM-only plans include big subscription discounts

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Everything costs more at the moment, so it’s important to check that you’re not paying too much for the services you need. Fortunately, your phone bill is one of the easiest things to save money on. Optus, one of the big three Australian telcos, has several good deals on SIM-only plans that are worth a look.

Reaching 98.5% of Australians, Optus has the second-largest network coverage, just behind Telstra’s 99.5%. While Telstra plans usually cost a bit extra, Optus competes strongly with various affordable plans alongside the likes of Vodafone. Of course, before signing up for any plan, you should always check the coverage map to ensure your location is covered.

Aside from going with Optus directly, several mobile virtual network operators (MVNOs) use the telco’s network to provide even cheaper services. Check out the cheapest Optus SIM-only plans below, including those offered by MVNOs, with all including at least 28-day expiries. You can also browse the cheapest plans from Telstra, find Vodafone’s best deals, and compare the overall cheapest SIM plans in Australia.


Cheapest prepaid Optus SIM-only plans

At the time of writing, the cheapest Optus cheapest SIM-only prepaid plan costs $35 on a 28-day recharge cycle. It includes 40GB of data in the first three months, before dropping down to a standard 20GB allocation. Any unused data rolls over with each renewal. If you’re a new customer, you can currently pick up the SIM for just $12.

This tier gets you 5G access where supported, although download speeds are limited to 150Mbps, unless you fork out for the pricier $55 plan. Other than unlimited calls and text messages, these prepaid plans include international calls starting from 400 minutes to 20 countries including New Zealand, the UK, and the US.

Compared to rival telcos, it’s a pretty decent offer. Telstra’s cheapest prepaid SIM plan costs $35 with a standard 15 GB data allowance, so Optus includes more data even outside of promotional bonuses. In terms of cost, Vodafone is on par, offering a $35 Prepaid Plus plan with 25 GB of data. You can also get a $5 discount by enabling automatic recharges.

Cheapest postpaid Optus SIM-only plans

Optus postpaid SIM-only plans start at $49 a month and 30GB of data for the cheapest option. If you opt for the $59 plan, you also get unlimited standard talk and text to 35 countries.

Want more data? The Optus Plus Promo plan is down to $69 per month for the first year, down from $89, along with a generous 500 GB monthly data allocation and credit towards subscriptions like Netflix and Amazon Prime. Its closest competitor among the big three is Vodafone, with its $69 SIM-only plan including 360 GB of data.

Postpaid Optus customers also benefit from discounted streaming subscriptions via SubHub. This includes a big discount on Optus Sport, costing $6.99 a month instead of the standard $24.99 rate. Not a bad deal for soccer die-hards.

Best MVNO using the Optus network

Although Optus has several high-data plans, here’s where you can save the most money. Given that most Australians aren’t big mobile data users, MVNO SIM-only plans using the Optus network are by far the cheapest option. It starts with Dodo, with a plan that costs just $10 per month. You only get 2 GB in return, which suits anyone who doesn’t download much or is usually connected to Wi-Fi.

Circles Life is the standout deal, offering 30GB for just $11 a month over six months. Moose Mobile isn’t far off either, providing an affordable 5G entry point at $11.80. That particular discount, down from $24.80, lasts for eight months. Even after the promo, it’s a good-value 5G plan.

On the prepaid side of things, there are fewer choices. Yomojo’s Big Kids Plan costs $14.90 per 30-day renewal, accompanied by 6 GB of data. It’s followed by Catch Connect, offering 10 GB of data with its $17 plan.

Cheapest long expiry 365-day SIM plans

A long expiry SIM plan is an easy way to save money on your phone bill. Available in various increments, you can purchase a 365-day SIM that lasts the entire year, which is great if you know what you need ahead of time. Like other SIM plans, these long-term offerings include unlimited local talk and text, with one main difference. Instead of receiving a new data allocation each month, you get it all upfront.

Catch Connect currently has the cheapest long expiry SIM plan using the Optus network. However, its 60GB data allocation isn’t much, so only infrequent internet users need apply.

If you want more data, and 5G access, Optus has a decent deal on its long expiry SIM plan. Normally $320, you can buy the 365-day SIM plan for $260 accompanied by 260GB of data. At nearly the equivalent of $22 per month, it’s not the cheapest plan around but the included data is nice.

Why choose a SIM plan?

A SIM-only plan is also a good, low-commitment way to test a different telco. There are no lock-in contracts or costly fees involved, making it an ideal money-saving choice. Each plan includes unlimited calls and messages within the country, along with mobile internet data allocations to suit all budgets. For added convenience, most telcos now offer eSIMs for compatible phones, meaning you can sign up online and get connected without needing to visit a store.

It’s also easy to find a plan that suits your exact needs. More often than not, we pay for more data than we actually need. Research from the Australian Competition and Consumer Commission (ACCC) shows that Australians only average 12.8GB of mobile data usage every month. With this in mind, and monitoring your own usage, you can choose a SIM plan that’ll likely save you money in the long run.

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