Best SIM Plans in Australia 2026: 8 Carriers, 25 Plans Compared

TL;DR: Top 3 Picks for Australia

Compare All 25 Australian Plans on SimFinder →

Below, we break down the entire market using real plan data.

Table of Contents

• The Australian Mobile Landscape
• Price Breakdown: What Every Carrier Charges
• Best Value Plans by Use Case
• 5G and eSIM: What’s Available
• Data Rollover: The Hidden Advantage
• What Users Say
• Frequently Asked Questions
• Key Takeaways

Australia’s mobile market is dominated by three networks — Telstra, Optus, and Vodafone — but the real value often comes from the carriers that resell their networks at a fraction of the price.

SimFinder’s database tracks 8 carriers and 25 plans in Australia. Every single plan is contract-free, eSIM-compatible, and includes unlimited calls. Prices range from AUD $23/month to $99/month, with dramatic differences in what you get for your money.

This guide breaks down the entire Australian SIM market using actual plan data, network quality scores, and pricing analysis.

The Australian Mobile Landscape: Who Owns What

Understanding Australia’s mobile market starts with one key fact: there are only three physical networks. Every carrier runs on one of these.

Quality data: OpenSignal 2025, measured June 2025

Telstra’s network dominance is clear: 5 out of 8 carriers run on it. With a coverage score of 97/100, Telstra is the only carrier that reliably works across Australia’s vast rural and regional areas. This matters — Australia is roughly the same size as the contiguous United States, but with just 26 million people.

Optus leads in raw download speed (145.2 Mbps vs Telstra’s 97.4 Mbps) and has the best latency (20ms). It’s a strong choice in metro areas but has gaps in regional coverage.

Vodafone offers the most data per dollar but has the weakest coverage at just 73/100. Unless you live exclusively in a major city, this is a significant trade-off.

Price Breakdown: What Every Carrier Charges

All 25 plans include unlimited voice calls, eSIM support, no contracts, and no cancellation fees. The key variables are price, data, 5G access, and data rollover.

MNO Plans (Telstra, Optus, Vodafone)

Budget Carriers (Sub-brand + MVNOs)

A clear pattern: budget carriers undercut MNOs by 30-55% for comparable data. Belong offers 100GB on Telstra’s 5G network for $49 — Telstra’s own 50GB plan costs $74.

Best Value Plans by Use Case

Lightest Use (Under $30/month)

ALDI Mobile $23 12GB — The cheapest plan in Australia. Runs on Telstra’s network, includes data rollover, and supports eSIM. No 5G, but at this price point that’s a reasonable trade-off. For anyone who mainly uses WiFi and needs a basic mobile plan, this is hard to beat.

Everyday Mobile $25 22GB — Just $2 more than ALDI, with almost double the data. Also on Telstra’s network with data rollover. No 5G.

Best Balance of Price and Features

amaysim $30 15GB — Runs on the Optus network (145.2 Mbps download, 88/100 overall), with 5G, eSIM, and data rollover included. Its continuing data allowance dropped to 15GB once the introductory promo ended, so ALDI Mobile’s 5G 29GB at $29 now offers more data for less — amaysim is worth it mainly if you specifically want Optus’s faster network over Telstra’s coverage.

Belong $39 40GB — If you need Telstra’s coverage (97/100), Belong is the way in. 5G, eSIM, and data rollover included. Belong is Telstra’s own sub-brand, so you’re getting the same network for almost half the price.

Heavy Data Users

Belong $59 160GB — 160GB on Telstra’s 5G network for $59 is exceptional value. That’s still less than Telstra’s own Basic 50GB plan ($74). Data rollover means unused gigabytes carry over to the next month.

Vodafone Large $78 420GB — The best raw data-per-dollar ratio in the market at 5.38 GB per dollar. If you’re in a metro area where Vodafone’s coverage is strong, 420GB at $78 is nearly impossible to match.

The “Don’t Think About It” Option

Belong $49 100GB — For most people, 100GB is more than enough. On Telstra’s 5G network with data rollover, this plan hits the sweet spot of coverage, data, speed, and price. It’s the plan SimFinder’s data suggests works for the widest range of users.

5G and eSIM: What’s Available

eSIM

All 25 plans in Australia support eSIM — a 100% adoption rate. This is unusually high globally. If you’re arriving in Australia and your phone supports eSIM, you can activate a plan before you even land.

5G

18 of 25 plans (72%) include 5G access. The exceptions:

Boost Mobile’s lack of 5G on any plan is a significant disadvantage in 2026, especially given it runs on the same Telstra network that other MVNOs use with 5G enabled.

Data Rollover: The Hidden Advantage of Budget Carriers

One pattern stands out in the data: every budget carrier offers data rollover, but no MNO does.

If your data usage varies month to month, a plan with rollover can be worth significantly more than its sticker price. A $39 Belong 40GB plan with rollover could effectively give you 60-80GB in a heavy month if you had a light month before.

Boost Mobile is the exception among budget carriers — no rollover and no 5G, making it the weakest value among Telstra-network resellers.

Compare Plans on SimFinder

The data in this guide comes from SimFinder’s database, which tracks 25 Australian plans across 8 carriers. If you want to filter by price, data, 5G, or eSIM, use the comparison tool to find your best match.

Compare Australian SIM Plans →

What Users Say

Real experiences from people using Australian SIMs.

“How can I easily get an Australian phone number? SIM card when I land there? — Needed an Australian number for a Woolworths account, which was a catch-22 before arrival.” — @APurpleLifeBlog (original post)

Individual experiences may vary based on location and network conditions.

Frequently Asked Questions

Can I use an Australian SIM without a long-term contract?

Yes. All 25 plans tracked by SimFinder are contract-free with no cancellation fees. This is standard in Australia’s prepaid/SIM-only market. You can switch carriers at any time.

Which network should I choose for regional or rural areas?

Telstra, without question. Its coverage score of 97/100 is far ahead of Optus (88) and Vodafone (73). If you travel outside major cities, choose Telstra directly or a carrier on its network: Belong, ALDI Mobile, Boost Mobile, or Everyday Mobile.

Is 5G worth paying extra for in Australia?

In most cases, no — because the cheapest 5G plans are actually MVNOs. ALDI Mobile offers 5G 29GB for just $29/month, and amaysim offers 5G 15GB for $30. You don’t need to pay MNO prices for 5G access.

What’s the best SIM for a working holiday or backpacking trip?

For most backpackers, Belong $39 40GB offers the best combination: Telstra’s regional coverage (essential if you’re traveling beyond cities), 5G, eSIM, data rollover, and no contract. If you need less data, ALDI Mobile’s $23 12GB plan is the budget option with Telstra coverage.

Do all plans support eSIM?

Yes. Every plan in SimFinder’s Australian database supports eSIM. This is universal across all 8 carriers as of March 2026.

Key Takeaways

The Australian SIM market in 2026:

• 8 carriers, 25 plans, all contract-free with unlimited calls and eSIM support
• Three networks matter: Telstra (coverage king, 97/100), Optus (speed king, 145.2 Mbps), Vodafone (value king, but 73/100 coverage)
• Budget carriers save 30-55%: Belong 100GB on Telstra costs $49 vs Telstra’s own 50GB at $74
• Data rollover is exclusive to budget carriers — every MVNO and sub-brand offers it, no MNO does
• 5G is near-universal (72% of plans), with Boost Mobile as the notable exception
• Price range: $23/mo (ALDI 12GB) to $99/mo (Telstra Premium 300GB)

For most users, the best strategy is to pick the network you need first (Telstra for coverage, Optus for speed), then find the cheapest carrier on that network.

Find Your Best Australian SIM Plan →

Plan data is current as of July 2026. Prices and inclusions may change. Check carrier websites for the latest information.

Compare all plans side by side using SimFinder’s comparison tool.