TL;DR — Cheapest 5G Plans (May 2026)
5G is no longer a premium add-on in Australia — budget providers include it at no extra cost. Lyca Mobile offers the cheapest 5G plan at AUD 10/month for 5 GB on Telstra Wholesale. Boost Mobile provides the best 5G experience at AUD 12/month (intro) on full Telstra 5G — faster speeds and better coverage than any other budget option. Felix Mobile is the cheapest unlimited data plan with 5G at AUD 20/month (speed capped at 20 Mbps). Tangerine offers 5G at AUD 25/month on Optus. For most users, a AUD 10–25/month 5G prepaid or SIM-only plan replaces a AUD 49–69/month Telstra/Optus postpaid plan with near-identical real-world performance.
5G on a Budget — What You Actually Get
Budget 5G is not the same as premium 5G. Telstra and Optus prioritise their own postpaid customers on the 5G network. MVNO customers get 5G access but at lower priority during congestion. The practical difference: at 3am, both get 300+ Mbps. At 6pm in a busy CBD, the premium customer gets 200 Mbps and the budget customer gets 50–120 Mbps. For everyday use — streaming, browsing, video calls — the difference is imperceptible.
Coverage is the bigger differentiator. Telstra’s 5G covers more of Australia’s landmass than Optus or Vodafone. An MVNO on Telstra Wholesale 5G (Lyca, Woolworths, Belong) covers about 80% of Telstra’s full 5G footprint. Boost Mobile, with full Telstra access, covers 100% of Telstra’s 5G network — the only budget provider to do so.
Cheapest 5G Plans Compared
| Provider | Cheapest 5G Plan | Data | Network | Speed Cap | Contract |
|---|---|---|---|---|---|
| Lyca Mobile | AUD 10/mo | 5 GB | Telstra Wholesale 5G | Uncapped | Prepaid (28 days) |
| Boost Mobile | AUD 12/mo (first 3 months) | 40 GB | Telstra Full 5G | Uncapped | Prepaid (28 days) |
| Felix Mobile | AUD 20/mo | Unlimited | Vodafone 5G | 20 Mbps | Month-to-month |
| Amaysim | AUD 15/mo | 25 GB | Optus Full 5G | Uncapped | Prepaid (28 days) |
| Tangerine | AUD 25/mo | 22 GB (first 6 months: AUD 15) | Optus 5G | Uncapped | Month-to-month |
| More Telecom | AUD 25/mo (CBA: AUD 18, first 12 months) | 25 GB | Telstra Wholesale 5G | Uncapped | Month-to-month |
| Woolworths Mobile | AUD 25/mo | 22 GB | Telstra Wholesale 5G | Uncapped | Month-to-month |
| Belong | AUD 25/mo | 20 GB | Telstra Wholesale 5G | Uncapped | Month-to-month |
Prices as of May 2026. All providers support 5G at no extra cost on 5G-compatible plans.
1. Boost Mobile — Best 5G on a Budget
Boost is the only MVNO with access to Telstra’s full 5G network — not the restricted wholesale version. The full 5G network includes mmWave and mid-band spectrum that Telstra reserves for its own customers and Boost. The result: faster peak speeds (500+ Mbps in mmWave zones) and coverage in areas where Telstra Wholesale 5G does not reach.
The AUD 12/month intro offer on 40 GB with full Telstra 5G is unmatched at any price. After 3 months at AUD 49/month, the value proposition shifts — still the best 5G network, but no longer the cheapest. For users who value 5G performance and rural coverage, the premium over Lyca or Tangerine is justified.
2. Lyca Mobile — Cheapest 5G Entry Point
Lyca’s AUD 10/month for 5 GB with 5G access is the cheapest 5G plan in Australia. The 5G runs on Telstra Wholesale — coverage is slightly less than full Telstra, but in metro areas the difference is negligible. For a light user upgrading from a 4G plan, Lyca’s 5G at AUD 10/month costs the same as 4G plans from other providers — effectively a free upgrade.
3. Felix Mobile — Cheapest Unlimited 5G
Felix’s AUD 20/month for unlimited data on Vodafone 5G with a 20 Mbps speed cap is the cheapest unlimited plan in Australia. 20 Mbps is fast enough for HD video streaming, video calls, and general browsing — but not for 4K streaming or large file downloads. The speed cap is the trade-off for the price. For users who want unlimited data without counting gigabytes and can accept the speed limit, Felix is the best value 5G plan.
Frequently Asked Questions
Do I need a 5G phone for these plans?
Yes. Your phone must support 5G. Most phones released after 2020 support 5G. Check your phone’s specifications for 5G NR band support — Australian 5G uses n78 (3.5 GHz, the main band) and n258/n257 (mmWave, limited to city centres). All 5G phones sold in Australia support n78.
Will 5G drain my battery faster?
Yes, typically 10–20% more battery consumption compared to 4G. The difference is noticeable on phones more than 2 years old. Most phones have a setting to prefer 4G when battery is low.
Is 5G worth it if I am mostly on WiFi?
Probably not. If 90% of your mobile usage is on WiFi at home and work, 5G only matters for the remaining 10%. A cheaper 4G plan saves money with negligible real-world impact. For users who stream, tether, or work on mobile data regularly, 5G’s lower latency and higher speeds are worth the minor cost difference over 4G plans.
Can I try 5G before switching?
The provider offering the cheapest trial: Boost Mobile’s AUD 12 plan for the first month is effectively a 5G trial on the best network. Use it for a month and compare to your current plan’s experience.
Final Verdict
For the best 5G experience at the lowest price: Boost Mobile at AUD 12/month intro (full Telstra 5G). For the absolute cheapest 5G: Lyca Mobile at AUD 10/month (Telstra Wholesale 5G). For unlimited data on a budget: Felix Mobile at AUD 20/month (Vodafone 5G, 20 Mbps cap). All three plans cost less than the cheapest Telstra/Optus postpaid plan with 5G.
Disclosure: This article contains affiliate links. Plan details based on May 2026 pricing.