Cheapest Mobile Phone Plans in Australia 2026

Mobile plans are one of the most overpaid expenses in Australian households. Australians on Telstra, Optus or Vodafone pay an average of $63–$99 per month for SIM-only plans, while equivalent coverage is available from smaller providers — called MVNOs — for as little as $14–$25 per month. The difference is up to $1,020 per year, for the same or nearly identical network coverage.

What Is an MVNO and Is It Safe to Switch?

An MVNO (Mobile Virtual Network Operator) is a phone provider that resells access to one of the three major networks — Telstra, Optus or Vodafone. They don't own towers; they lease capacity. This means you're often on the same physical network as a major carrier, at a fraction of the price.

Well-known Australian MVNOs include Aldi Mobile, Boost Mobile, Moose Mobile, SpinTel, Amaysim, Dodo, TPG, and many others. They are fully legitimate, ACMA-registered providers. The main trade-off: they don't sell phones on a plan, so you need to bring your own device.

The Three Networks Explained

Every Australian mobile provider runs on one of three networks:

• Telstra: Widest coverage in Australia, especially regional and rural areas. Full Telstra network access is only available through Telstra directly or Boost Mobile. Other Telstra MVNOs (like Aldi Mobile) use the Telstra Wholesale network, which has very similar 4G coverage but a smaller 5G footprint.
• Optus: Strong in major cities. Optus and Vodafone have a network sharing agreement as of 2025 that has improved regional coverage for both. MVNOs like Moose Mobile and SpinTel use the full Optus 5G network.
• Vodafone: Covers 98.5% of Australians. MVNOs get full Vodafone network access.

For metro Australians: any of the three networks will work well. For regional and rural Australians: Telstra coverage is often the only reliable option — prioritise Boost Mobile or Aldi Mobile over cheaper Optus/Vodafone MVNOs.

Cheapest Mobile Plans in Australia — May 2026

Prices verified May 2026. Mobile plan pricing changes frequently — always check the provider's website for current rates before signing up.

Best Intro Deals (Cheapest First 6 Months)

Provider	Intro Price	Ongoing Price	Data	Network
Moose Mobile	$12.40/mth (6 months)	$24.80/mth	30GB	Optus 5G
SpinTel	$14/mth (6 months)	$22/mth	25GB	Optus 5G
Dodo	50% off for 4 months	$30/mth	50GB	Optus
Amaysim	$12 first renewal	$25/mth	30GB	Optus 5G

Best Long-Term Value (Cheapest Ongoing Price)

Provider	Ongoing Price	Data	Network
SpinTel	$22/mth	25GB	Optus 5G
Moose Mobile	$24.80/mth	30GB	Optus 5G
Tangerine	$25/mth	14GB rolling	Telstra Wholesale
Aldi Mobile	$29/mth	29GB	Telstra Wholesale
Boost Mobile	$26/28 days	7GB (30GB first)	Full Telstra 5G
Felix Mobile	$40/mth	Unlimited (20Mbps cap)	Optus

The Big Three vs MVNOs: Real Cost Comparison

Provider Type	Average Monthly Cost	Annual Cost
Telstra, Optus or Vodafone (direct)	$63–$99	$756–$1,188
MVNO (average)	$27–$36	$324–$432
Cheapest MVNO (intro deal)	$12.40–$14	~$200 first year

Switching from Telstra at $65/month to SpinTel at $22/month saves $516 per year — on the same Optus 5G network.

The 28-Day Trap: Prepaid vs Postpaid

Many prepaid plans operate on 28-day cycles rather than monthly. This means you pay for 13 billing periods per year instead of 12 — effectively adding one extra month's cost annually. A $25 prepaid plan on a 28-day cycle costs $325/year, not $300. Check whether your plan is 28-day or monthly before committing.

How Much Data Do You Actually Need?

The ACCC found the average Australian uses around 14GB of mobile data per month — far less than the 40GB most people choose. If you're mostly on Wi-Fi at home and work, you can likely get by with a 15–25GB plan and save significantly. Check your current usage in your phone's settings (Settings → Mobile Data on iPhone, or Settings → Network on Android) before choosing a plan.

The Cheapest Strategy: Hop Between Intro Deals

Since most cheap plans have no lock-in contracts, some Australians switch providers every 6 months to stay on introductory pricing permanently. The process takes about 20 minutes — you request a port of your existing number to the new provider, and it transfers within a few hours. Done twice a year, this can keep your effective monthly cost under $15 indefinitely.

This approach works best for city residents on the Optus or Vodafone network. Regional users on Telstra have fewer MVNO options and less flexibility to switch.

Can You Keep Your Phone Number?

Yes — always. When signing up with a new provider, request a "number port" during the sign-up process. Your existing number transfers within 1–4 hours. You do not need to notify your current provider in advance for a postpaid-to-postpaid transfer; the new provider handles it.

How to Switch in 5 Steps

1. Check your current data usage (phone settings) — pick a plan with at least that much data
2. Check coverage in your area at the new provider's website — especially if you're regional
3. Sign up online with the new provider, requesting a number port
4. Wait for your number to transfer (usually same day)
5. Cancel your old plan — you're done

And if you're signing up online, check TopCashback Australia first — some mobile providers offer sign-up cashback that can effectively make your first month free.

Bottom Line

Most Australians can cut their mobile phone bill by $300–$800 per year by switching from a major carrier to an MVNO on the same network. The coverage difference is minimal for metro users, and the process takes less than 30 minutes. It's one of the highest-return bill reductions available right now.