Good deal: 80GB for $40 from Optus

Optus today rolled out a 20% discount offer on its 80GB SIM-only plan and hot damn it's a good deal. The plan now offers 80GB for $40 per month if you sign a 12-month contract.

The plan comes with unlimited national talk and text, unlimited international calls to 35 countries and 4GB of monthly roaming data to use in "Zone 1" countries. (Optus Zone 1 covers most of Asia, Europe, North America and New Zealand. See the Optus website for details.) 

The plan also includes free subscriptions to Optus Sport and the National Geographic app as well as data-free streaming of Spotify, Google Play Music and iHeart Radio. The offer will last until May 5.

Optus' plan also allows you to add data-free SD streaming of Netflix, Stan and ABC iView for an extra $5 per month. But with 80GB, you probably don't need to.

Optus' deal is the cheapest SIM-only offer with 80GB on the market right now, although competitors aren't lagging too far behind. Jeenee Mobile is currently offering 82GB for $44.90 per month (with a $12.37 set-up fee) and Think Mobile is offering 80GB for only $48 per month. Both of these plans are offered on a 12-month contract.

Jeenee Mobile offers service on the Optus network. Think Mobile offers service on the Vodafone network.

See how these and other plans from our database of 28 providers compare to the Optus plan below:

Mobile Phone Plans

#1	felix mobile	felix mobile felix Unlimited Mobile Plan Unlimited data at download speeds up to 40Mbps On the Vodafone 5G/4G Mobile Network Deal: $20/mth for first 6 mths. Reverts to $40/month. Use promo code UNL40. Ends 30.11.26. T&Cs apply $20.00 Per 1 Month Renewal Go to Site	$20.00 Per 1 Month Renewal	Go to Site
#2	Lyca Mobile	Lyca Mobile Unlimited Plan M 120GB data at download speeds up to 100Mbps Vodafone 5G Network in selected areas with 5G devices Deal: $20 for first 6 renewals + includes 40GB bonus data on activation and first 11 renewals. Offer ends 31.12.26 $20.00 Per 28 Day Renewal Link not supplied	$20.00 Per 28 Day Renewal	Link not supplied
#3	Dodo	Dodo Large Mobile Plan 80GB data at download speeds up to 150Mbps Optus 5G in selected areas (exc NT) with a 5G device Deal: 50% off! Get the Large Mobile Plan for $20/mth for first 6 mths, then $40/mth. New and returning mobile customers only. Ends 08.12 $20.00/mth Min. cost $20 Go to Site	$20.00/mth Min. cost $20	Go to Site
#4	OnePass mobile	OnePass mobile 28 Day Plan - 80GB 80GB data at download speeds up to 150Mbps Optus 5G in selected areas with 5G devices ex. NT Deal: Save $20 - Get 80GB for only $20 for the first 6 recharges! Recharges $40/80GB. New customers only. T&Cs apply $20.00 Per 28 Day Renewal Link not supplied	$20.00 Per 28 Day Renewal	Link not supplied
#5	Moose Mobile	Moose Mobile Moose 100GB SIM Only 100GB data at download speeds up to 150Mbps Vodafone 5G Network in selected areas with 5G devices Deal: Get 100GB for $22– Includes $18 off for first 6 months, then reverts to $40. Offer ends 30.06.27 $22.00/mth Min. cost $22 Go to Site	$22.00/mth Min. cost $22	Go to Site
#6	iiNet	iiNet 100GB Large Plan 100GB data at download speeds up to 250Mbps Vodafone 5G Network in selected areas with 5G devices Deal: 50% off - $22.50/mth for first 6 months, then $45/mth ongoing. Available until withdrawn. T&Cs apply. $22.50 Per 1 Month Renewal Link not supplied	$22.50 Per 1 Month Renewal	Link not supplied
#7	TPG	TPG 100GB Large Plan 100GB data at download speeds up to 250Mbps Vodafone 5G Network in selected areas with 5G devices Deal: 50% off - $22.50/mth for first 6 months, then $45/mth ongoing. Available until withdrawn. T&Cs apply. $22.50 Per 1 Month Renewal Link not supplied	$22.50 Per 1 Month Renewal	Link not supplied
#8	Swoop	Swoop 120GB SIM Only 5G 120GB data at download speeds up to 150Mbps Vodafone 5G Network in selected areas with 5G devices Deal: Includes $10 off for first 6 months - $30/mth for first 6 months then $40/mth after that. Offer ends 30.06.27 $30.00/mth Min. cost $30 Go to Site	$30.00/mth Min. cost $30	Go to Site
#9	Yomojo	Yomojo Pro 105GB Plan 105GB data at download speeds up to 150Mbps On the Optus 4G Plus Mobile Network $34.90 Per 30 Day Renewal Link not supplied	$34.90 Per 30 Day Renewal	Link not supplied
#10	Lebara Mobile	Lebara Mobile $35 SIM Plan 110GB data at download speeds up to 150Mbps Vodafone 5G Network in selected areas with 5G devices Deal: $35 SIM for $10 online + Includes 55GB bonus data for first 3 recharges. Offer ends 03.12.26 $35.00 Per 28 Day Renewal Link not supplied	$35.00 Per 28 Day Renewal	Link not supplied

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See More Plans ~ Last Updated 6/11/2026

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Jacqui Dent

Editorial Strategist

Jacqui Dent is an Editorial Content Strategist at WhistleOut Australia, where she writes about mobile phone plans, NBN plans and everything in between. Over her ten-year career, she has worked to provide informed advice to the public, first in the sphere of writing and now in the world of consumer tech. Jacqui has also written about consumer telco products for Business Insider, Pedestrian and the 50Up Club.

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