Cheapest 20GB Mobile Plans — Any Network

What's the cheapest mobile plan?

The cheapest 20GB mobile plan across all networks is 30GB Mobile by tangerine at $15.00/mo.

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20 Plans — sorted by price

Showing plans with 20–30GB data across all networks. Postpaid and prepaid only.

Prices validated: 5 Nov 2026

CarrierPlanDataType5GeSIM$/moActions
tangerine
30GB Mobile30GBPostpaidYesYes$15.00
Switch — $25
tangerine
30GB30GBPostpaidYesYes$15.00
Switch — $25
moose-mobile
30GB Mobile Plan30GBPostpaidNoYes$23.00
Switch — $25
spintel
25GB SIM Only25GBPostpaidYesYes$23.00
Switch — $25
kogan-mobile
Small (Monthly)25GBPrepaidNoYes$23.00
Visit kogan-mobile
yomojo
Starter29GBPrepaidNoYes$23.90
Visit yomojo
southern-phone
20GB 5G SIM Plan20GBPostpaidYes—$24.00
Switch — $25
yomojo
Starter29GBPrepaidNoYes$24.90
Visit yomojo
swoop
30GB SIM Only30GBPostpaidYesYes$25.00
Switch — $25
catch-connect
22GB 28 Day Plan22GBPostpaidYes—$26.79
Switch — $25
catch-connect
$12.50 first 6 recharges 28 Days Plan22GBPrepaidYes—$26.79
Visit catch-connect
catch-connect
28 Days Plan $12.50 22GB22GBPrepaidYes—$26.79
Visit catch-connect
catch-connect
28 Days Plan 22GB22GBPrepaidYes—$26.79
Visit catch-connect
flip
25GB25GBPostpaidNo—$29.90
Switch — $25
iinet
Small Plan30GBPostpaidYesYes$30.00
Switch — $25
iprimus
5G Small30GBPostpaidYes—$30.00
Switch — $25
tpg
Small 30GB30GBPostpaidYesYes$30.00
Switch — $25
bendigo-telco
Lifestyle Mobile - Starter30GBPostpaidYesYes$30.00
Switch — $25
tangerine
30GB30GBPostpaidNoYes$30.00
Switch — $25
aussie-broadband
Saver 20GB20GBPostpaidYesYes$30.00
Switch — $25

Bill Hero is an independent comparison service. We are paid by subscribers and concierge fees, not by carriers or retailers.

Frequently Asked Questions

What is the cheapest 20GB mobile plan across all networks?
30GB Mobile by tangerine at $15.00/mo is currently the cheapest 20GB plan across all networks. Prices are updated daily.
Should I choose postpaid or prepaid for a 20GB plan?
Postpaid plans typically include handset financing options and are billed monthly. Prepaid plans are pay-as-you-go — better for flexibility and no credit checks. Both are shown in the table above.
How often are mobile plan prices updated?
Bill Hero checks mobile plan data daily. All plans shown were validated within the last 24 hours. See the "Prices validated" date above the table for the most recent check.
Can I switch mobile plans without changing my number?
Yes. Mobile number portability (MNP) lets you keep your number when switching carriers or networks. The process usually takes 1–2 business days.

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