Australia Post FlexiSIM


Australia Post FlexiSIM


FlexiSIM is a mobile SIM that offers you the flexibility of a no lock-in contract, three great plans to choose from and the option to share^ or gift+ data with family and friends also on FlexiSIM. Enjoy the convenience of unlimited talk and text within Australia. With one SIM for three sizes, it’s the flexible SIM that works for you.

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Out of stock
  • Standard delivery availableStandard
  • International delivery not availableInternational
  • Express delivery not availableExpress
Please note: This product is temporarily out of stock online.

Looking for a flexible mobile phone SIM that works for you?
FlexiSIM provides you with the flexibility of a no lock-in contract, coupled with three great plans to choose from. With FlexiSIM, you can choose to migrate your own number across# and activate within just a few hours.

Pick a monthly plan that suits you:

Plan 1 - $19, 8GB included data
Plan 2 - $25, 20GB included data (Top value!)
Plan 3 - $35, 25GB included data

What’s great about our new mobile FlexiSIM?

  • Unlimited talk and text.
  • Receive unlimited calls and SMS nationally in Australia.
  • Monthly plan, no lock-in contracts.
  • Enjoy the freedom of monthly plans that you can change if you need to.
  • Keep your number or get a new one#.
  • Share data with family or friends who are also on FlexiSIM^.
  • Gift data with your mates on FlexiSIM+.
  • Support right here in Australia: 
    • 7am - 7pm Monday to Friday (AEST). Call 1300 196 916
    • Saturday and Sunday - closed
  • 4G network.
  • FlexiSIM operates on the Optus 4G network . Make the most of full network coverage.

For FlexiSIM to work, the device must be unlocked and have the ability to operate on a 3G/4G network. 
The FlexiSIM service is provided by TravelSIM Australia Pty Ltd on the Optus network.
For full terms and conditions, rates, plans and charges visit

*Receive $4 discount off your first month plan. Usage subject to Fair Go Policy.
# There may be costs from your existing provider to keep your existing number.
+Data Gifting
This plan allows data to be gifted between Australia Post Mobile FlexiSIM users within Australia for use on domestic plans.  The recipient of the gifted data does not need to be on the same billing account.
You may gift data in increments of 1GB up to a maximum of 5GB per billing period.  You may only gift data which is available in your current billing period. If you have less than 1.5GB remaining of your included data, you may not gift that data.
If your plan allows data sharing, you must be the primary account holder to gift data.
When you gift data your included data allowance will be reduced for that billing period only.  For example, if your included data allowance is 5GB and you gift 1GB, you data allowance for that billing period will be 4GB. 
Gifted data will be available for use once the recipient has used all their included data, bonus data or data packs.  Unused gifted data will expire at the end of the recipient’s billing period. 
Once you gift data, this cannot be reversed.  There is no fee to gift data.
^Data Sharing
This plan allows data sharing between users on the same billing account within Australia.
If your billing account has multiple data sharing plans, all plans will be pooled together and shared across all users on the billing account.  If you wish to stop sharing data, users will need to transfer to separate billing accounts.
If you are the primary account holder, you will have the ability to set data limits for each user on the billing account.
Any unused data expires at the end of each billing period.
Data is counted in kilobytes, and includes uploads and downloads.
Start using your Australia Post FlexiSIM

1. Buy

Go to a participating Post Office or buy online to receive free shipping. Your SIM card includes AUD$4 discount+ off your first month plan.

2. Activate it

Activate online at or call 1300 196 916 to activate over the phone with our Australia based customer service team:

  • 7am - 7pm Monday to Friday (AEST)
  • Saturday and Sunday – closed

3. Add credit

Download the Australia Post FlexiSIM app. Check your usage, change plans and more, all in one place.
Australia Post will aim to dispatch your order within 1-2 working days (excludes weekends and Public Holidays) of receiving your order.

Standard Domestic Delivery Timeframes (within Australia): Australia Post will endeavour to deliver an order within 3-10 business days from order dispatch. Where You have specified a Parcel Locker or Parcel Collect point as the delivery address, You will receive an email notification once your order is ready to collect.

Express Domestic Delivery Timeframes (within Australia): Australia Post will endeavour to deliver an order within 1-3 business days (depending on the delivery post code). Not all products will be available for express delivery.*

*Express Post guarantee temporarily suspended:

Express Post is still available and will continue to be prioritised as the fastest option for customers but may not always meet the next business day delivery standard.

> Read more

International Delivery Timeframes: The delivery time for international orders is typically 10+ business days. Estimated delivery times are between metro areas of major cities. Excludes any time in customs and delays due to reasons outside of Australia Post’s control. Country specific delivery times are available online at** Not all products will be available for international delivery.

**Coronavirus: International updates

Australia Post is experiencing international delivery delays in all destinations due to limited airline capacity and government restrictions as a result of COVID-19. All postal services to some destinations are suspended

> Read more

For our full terms and conditions including returns please refer to our terms and conditions at: shop terms conditions

If you need assistance with a product or to understand our terms and conditions please contact the Australia Post Call Centre on 13 POST (13 76 78).

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*Some products can't be delivered to a Parcel Locker or directly to a Post Office for collection. Available collection options and locations will be shown in the 'Delivery details' section at checkout.