Not a typo: 100GB phone plan for $28 per month

Nope. You didn't misread the headline. One of Australia's newest telcos, Circles.Life, is currently offering a 100GB mobile plan for just $28 per month. 

100GB. For $28. 

Wow. 

If that seems too good to be true, you'll be pleased to know there are two catches. You have to be a new customer, and you only get a 100GB allowance for your first 12 months. After that, the plan will return to Circles' standard pricing of $28 for 20GB. The plan is no-contract however, so you can leave any time either before or after promo pricing ends.

If you're after a similarly large allowance, the next closest option comes from Vodafone, where $65 per month gets you 120GB on a 12-month contract.

Mobile Phone Plans

#1	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
#2	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
#3	SpinTel	SpinTel $35 Mobile Plan 100GB data at download speeds up to 150Mbps Optus 5G in selected areas with 5G devices ex. NT $35.00/mth Min. cost $35 Go to Site	$35.00/mth Min. cost $35	Go to Site
#4	Optus	Optus $60 Optus Choice Plus Plan 100GB data Optus 5G in selected areas (exc NT) with a 5G device Deal: $39/mth and 100GB/mth for first 12 months, then 60GB/mth and $60/mth or as notified. New services. Ends 12.11.26. Terms apply. $39.00/mth Min. cost $39 Go to Site	$39.00/mth Min. cost $39	Go to Site
#5	Coles Mobile	Coles Mobile $45 Mobile Plan 200GB data at download speeds up to 100Mbps Optus 5G in selected areas (exc NT) with a 5G device Deal: Get 100GB bonus data for the first 3 months. Offer ends 02.02.27 $45.00/mth Min. cost $45 Link not supplied	$45.00/mth Min. cost $45	Link not supplied
#6	Belong	Belong 100GB Mobile Plan 200GB data at download speeds up to 150Mbps Uses parts of Telstra’s 5G and 4G mobile networks Deal: Includes 100GB monthly bonus data for first 12 months when you activate your new service by 30.11.26. T&Cs apply. $49.00/mth Min. cost $49 Link not supplied	$49.00/mth Min. cost $49	Link not supplied
#7	Vodafone	Vodafone $68 Medium SIM Only Plan 220GB data Vodafone 5G Network in selected areas with 5G devices Deal: Includes $18/mth off plan fees for first 12 months when you stay connected to this plan. Ends 16.11.26. T&Cs apply. $50.00/mth Min. cost $50 Link not supplied	$50.00/mth Min. cost $50	Link not supplied
#8	Everyday Mobile	Everyday Mobile $50 SIM Only 110GB data at download speeds up to 150Mbps Uses parts of Telstra’s 5G and 4G mobile networks Deal: Get 10% off an eligible Woolworths shop in store every month when you link your Everyday Rewards card. T&Cs apply $50.00/mth Min. cost $50 Link not supplied	$50.00/mth Min. cost $50	Link not supplied
#9	Aussie Broadband	Aussie Broadband Essential 5G SIM Plan 100GB data at download speeds up to 150Mbps Optus 5G in selected areas with 5G devices ex. NT $50.00/mth Min. cost $50 Link not supplied	$50.00/mth Min. cost $50	Link not supplied
#10	Tangerine Telecom	Tangerine Telecom 160GB 5G Mobile SIM 160GB data at download speeds up to 250Mbps Uses parts of Telstra’s 5G and 4G mobile networks Deal: Bundle your mobile and nbn plans on the same account to get 10% off your mobile SIM-only plan fees. T&Cs apply. $60.00/mth Min. cost $60 Go to Site	$60.00/mth Min. cost $60	Go to Site

Sorted by price

See More Plans ~ Last Updated 6/11/2026

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To get this deal, you'll need to sign up with Circles.Life by November 14 using the promo code 100GBFOR28 and activate your SIM card by December 31.

If you don't need quite as much data, Circles also has a slightly cheaper deal that gets you 20GB for $18 per month. Once again, the discount is only valid for your first 12 months.

This offer runs until November 30. To get it, you'll need to use the promo code 10FOR12.

Both plans also include 3GB of "bill shock protection data", which kicks in after you burn through your allowance. If you manage to use this data too, you'll get billed at $0.01 per MB unless you purchase an add-on. These start at 3GB for $6, which is pretty good when you consider the standard rate is $10 per GB. 

Be aware that Circles.Life starts all customer billing periods on the 1st of the month, which means that, if you signed up today, you'd pay approximately $18 for somewhere around 66GB, which will last you until the end of the month. Then on December 1 you'll be billed the full $28 for the full 100GB.

Circles is powered by the Optus network.

Thinking of switching to Circles.Life? See our guide on how to keep your current phone number.

Alex Choros

Managing Editor + Group Telco Editor | X | Instagram | Threads | LinkedIn

Alex Choros is the Managing Editor of WhistleOut Australia and an award-winning journalist. He's been writing about consumer technology for over a decade and is an expert on the Australian telco sector, to the point where he knows far too many phone and internet plans by heart. In addition to leading the WhistleOut editorial team, Alex is responsible for ruining the office Sonos with his troubled taste in music.

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