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Compare 20GB Mobile Data Plans Background

Compare 20GB Mobile Data Plans

If you’re an average data user, a 20GB plan provides plenty of gigabytes for as little as $20 per month. The table below shows the prepaid and postpaid plans with a minimum 20GB of data on our database. You can change the default settings to show plans that provide a different data minimum.

Josh Filosi
Josh Filosi
Data Insights Analyst
Tara Donnelly
Tara Donnelly
Utilities Editor
Updated 4 May, 2024
Fact checked

Instantly compare 200+ Canstar Blue expert rated products based on these selections

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TPG | T4G Large Plan
SIM-Only prepaid | 30.417 days renewal period
min. total cost $15.00 spend over 30.417 day expiry
Go to site search-icon

PROMOTED
TPG logo
star star star empty empty
Brand Satisfaction Glossary
50% off mobile plan fees for first 6 months when you stay connected to your selected plan. New connections only. Available until withdrawn. T&C's Apply
  • icon Network provider: Vodafone Glossary
  • icon Network technology: 4G enabled Glossary
Value Rank Glossary
out of 10 Glossary
45GB Glossary
$15 Glossary
for six recharges then $30.00/expiry Glossary
Vodafone | $45 Prepaid Plus Starter Pack
SIM-Only prepaid | 28 days renewal period
min. total cost $45.00 spend over 28 day expiry
Go to site search-icon

PROMOTED
Vodafone logo
star star star empty empty
Brand Satisfaction Glossary
Get 30GB bonus data on first 6 recharges within 180 days of activation. Activate by 10/11/24. Plus save $5 each month when you opt-in to Auto Recharge. T&Cs Apply
  • icon Network provider: Vodafone Glossary
  • icon Network technology: 5G enabled Glossary
Value Rank Glossary
out of 10 Glossary
65GB Glossary
65GB for 3 months, then 35GB/mth Glossary
$45 Glossary
iiNet | $29.99 Mobile Voice SIM Only
SIM-Only prepaid | 30.417 days renewal period
min. total cost $15.00 spend over 30.417 day expiry
Go to site search-icon

PROMOTED
iiNet logo
star star star empty empty
Brand Satisfaction Glossary
Half Price! $15/mth for the first 6 months, then $29.99/mth. T&Cs Apply
Plus a bonus 80GB data when you bundle this Mobile SIM with any active iiNet internet plan.
  • icon Network provider: Vodafone Glossary
  • icon Network technology: 4G enabled Glossary
Value Rank Glossary
out of 10 Glossary
40GB Glossary
$15 Glossary
for six recharges then $29.99/expiry Glossary
Amaysim | UNLIMITED 32GB Prepaid
SIM-Only prepaid | 28 days renewal period
min. total cost $10.00 spend over 28 day expiry
Go to site search-icon

PROMOTED
Amaysim logo
star star star star star
Brand Satisfaction Glossary
It's MAYhem, get up to 65% off! 50GB for $10 (was $30), incl 18GB bonus data. First renewal only, ongoing is 32GB/$30 for 28 days. Offer ends 14/05/24, T&Cs apply.
  • icon Network provider: Optus Glossary
  • icon Network technology: 5G enabled Glossary
Value Rank Glossary
out of 10 Glossary
50GB Glossary
50GB for 1 month, then 32GB/mth Glossary
$10 Glossary
for one recharge then $30.00/expiry Glossary
Kogan | $25 Medium Plan
SIM-Only prepaid | 30 days renewal period
min. total cost $10.00 spend over 30 day expiry
Go to site search-icon
Kogan logo
star star star star empty
Brand Satisfaction Glossary
  • icon Network provider: Vodafone Glossary
  • icon Network technology: 4G enabled Glossary
Value Rank Glossary
out of 10 Glossary
40GB Glossary
$10 Glossary
for one recharge then $25.00/expiry Glossary
Amaysim | UNLIMITED 32GB Prepaid
SIM-Only prepaid | 28 days renewal period
min. total cost $10.00 spend over 28 day expiry
Go to site search-icon
Amaysim logo
star star star star star
Brand Satisfaction Glossary
  • icon Network provider: Optus Glossary
  • icon Network technology: 5G enabled Glossary
Value Rank Glossary
out of 10 Glossary
50GB Glossary
50GB for 1 month, then 32GB/mth Glossary
$10 Glossary
for one recharge then $30.00/expiry Glossary
Amaysim | UNLIMITED 10GB Prepaid
SIM-Only prepaid | 7 days renewal period
min. total cost $10.00 spend over 7 day expiry
Go to site search-icon
Amaysim logo
star star star star star
Brand Satisfaction Glossary
  • icon Network provider: Optus Glossary
  • icon Network technology: 5G enabled Glossary
Value Rank Glossary
out of 10 Glossary
10GB Glossary
$10 Glossary
Moose Mobile | Moose 25GB SIM Only
SIM-Only postpaid | No lock-in contract
Award icon Outstanding Value - SIM Only Post-paid Glossary
min. total cost $11.80 over 1 month period
Go to site search-icon
Moose Mobile logo
star star star star empty
Brand Satisfaction Glossary
  • icon Network provider: Optus Glossary
  • icon Network technology: 5G enabled Glossary
  • icon Data Banking of 200GB Glossary
Value Rank Glossary
out of 10 Glossary
25GB Glossary
$11.80 Glossary
for the first 8 months, then $24.80 Glossary
Boost Mobile | $12 Prepaid
SIM-Only prepaid | 7 days renewal period
min. total cost $12.00 spend over 7 day expiry
Go to site search-icon
Boost Mobile logo
star star star star empty
Brand Satisfaction Glossary
  • icon Network provider: Telstra Glossary
  • icon Network technology: 5G enabled Glossary
Value Rank Glossary
out of 10 Glossary
5GB Glossary
$12 Glossary
TPG | T4G Medium Plan
SIM-Only prepaid | 30.417 days renewal period
Award icon Outstanding Value - SIM Only Pre-Paid Glossary
min. total cost $12.50 spend over 30.417 day expiry
Go to site search-icon
TPG logo
star star star empty empty
Brand Satisfaction Glossary
  • icon Network provider: Vodafone Glossary
  • icon Network technology: 4G enabled Glossary
Value Rank Glossary
out of 10 Glossary
25GB Glossary
$12.50 Glossary
for six recharges then $25.00/expiry Glossary
DODO | $25 Sim Only
SIM-Only postpaid | No lock-in contract
min. total cost $12.50 over 1 month period
Go to site search-icon
DODO logo
star star star empty empty
Brand Satisfaction Glossary
  • icon Network provider: Optus Glossary
  • icon Network technology: 4G enabled Glossary
Value Rank Glossary
out of 10 Glossary
25GB Glossary
$12.50 Glossary
for the first 3 months, then $25.00 Glossary
TPG | T4G Large Plan
SIM-Only prepaid | 30.417 days renewal period
Award icon Outstanding Value - SIM Only Pre-Paid Glossary
min. total cost $15.00 spend over 30.417 day expiry
Go to site search-icon
TPG logo
star star star empty empty
Brand Satisfaction Glossary
  • icon Network provider: Vodafone Glossary
  • icon Network technology: 4G enabled Glossary
Value Rank Glossary
out of 10 Glossary
45GB Glossary
$15 Glossary
for six recharges then $30.00/expiry Glossary
iiNet | $29.99 Mobile Voice SIM Only
SIM-Only prepaid | 30.417 days renewal period
min. total cost $15.00 spend over 30.417 day expiry
Go to site search-icon
iiNet logo
star star star empty empty
Brand Satisfaction Glossary
  • icon Network provider: Vodafone Glossary
  • icon Network technology: 4G enabled Glossary
Value Rank Glossary
out of 10 Glossary
40GB Glossary
$15 Glossary
for six recharges then $29.99/expiry Glossary
Kogan | $40 Large Plan
SIM-Only prepaid | 30 days renewal period
min. total cost $15.00 spend over 30 day expiry
Go to site search-icon
Kogan logo
star star star star empty
Brand Satisfaction Glossary
  • icon Network provider: Vodafone Glossary
  • icon Network technology: 4G enabled Glossary
Value Rank Glossary
out of 10 Glossary
80GB Glossary
$15 Glossary
for one recharge then $40.00/expiry Glossary
AGL Energy Limited | 5G Small Mobile Sim
SIM-Only postpaid | No lock-in contract
min. total cost $35.00 over 1 month period
Go to site search-icon

PROMOTED
AGL Energy Limited logo
Not yet rated
Bundle Offer: $15 a month for the first 6 months, then $25 after that, when you have AGL energy. Ends 12/08/24. T&Cs apply.
  • icon Network provider: Optus Glossary
  • icon Network technology: 5G enabled Glossary
Value Rank Glossary
out of 10 Glossary
20GB Glossary
$35 Glossary
Vodafone | Small Plan
SIM-Only postpaid | No lock-in contract
min. total cost $49.00 over 1 month period
Go to site search-icon

PROMOTED
Vodafone logo
star star star empty empty
Brand Satisfaction Glossary
Students, save $9/mth off plan fees and get 50GB bonus data. New customers only, valid student ID and email required. Offers end 02/05/24. T&Cs apply.
  • icon Network provider: Vodafone Glossary
  • icon Network technology: 5G enabled Glossary
Value Rank Glossary
out of 10 Glossary
100GB Glossary
incl. 50GB bonus data Glossary
$49 Glossary
for the first 1 month, then $49.00 Glossary
FELIX | $40 Plan
SIM-Only prepaid | 30.417 days renewal period
min. total cost $40.00 spend over 30.417 day expiry
Go to site search-icon

PROMOTED
FELIX logo
Not yet rated
50% off first 3 months with code FELIX50. Unlimited data, calls & texts. Available until withdrawn. One tree planted every month you're with felix mobile! T&Cs Apply
  • icon Network provider: Vodafone Glossary
  • icon Network technology: 4G enabled Glossary
Value Rank Glossary
out of 10 Glossary
Unlimited Glossary
$40 Glossary

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Unsure of a term in the above table? View glossary

The initial results in the table above are sorted by Advertised Cost (Low-High) , then Value Rank (High-Low) , then Provider Name (Alphabetical) . Additional filters may have been applied, see top of table for details.

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Compare mobile plans with different data allowances

100gb Mobile Data Plans

80gb Mobile Data Plans

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40gb Mobile Data Plans

10gb Mobile Data Plans

5gb Mobile Data Plans

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About our phone experts

TaraTara Donnelly: Utilities Editor

As Canstar Blue’s Utilities Editor, Tara Donnelly covers the internet, mobile and energy sectors – topics she’s spent a decade focused on, alongside consumer technology, within the comparison industry. Her telco expertise has seen her appear in national media including 9 News, 7 News, Sunrise, the ABC and The Sydney Morning Herald. You can follow Tara on LinkedIn and Twitter.

Meet the Editorial Team

 

 

Josh Filosi: Data Insights Analyst

Josh Filosi is Canstar’s Data Insights Analyst, and helps develop and deliver the methodology for Canstar Blue’s Value Rankings and Awards for the telco industry. He holds a double-major in Economics and Behavioral Science, and enjoys interpreting complex data. Connect with Josh on LinkedIn.

Meet the Research Team

 
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To our knowledge, all information in articles on the Canstar Blue website was correct at the time of publication. This information may have changed over time. Refer to the product fact sheet (or relevant similar documentation) before making any purchase decision. Canstar Blue's website terms and conditions apply.