Plan Billing Explained

Learn the in's and out's of Australia Post FlexiSIM month-to-month billing.

How does billing work for month-to-month plans?

Get 30 days of coverage from each payment date, or if the previously paid 30 days isn't complete, enjoy an additional 30 days when it does.

Frequently Asked Questions


How do I pay my bill each month?

During activation, you'll either save a credit card or pay using a voucher from an Australia Post Office. At the end of the 30 day billing period, your saved credit card will be automatically charged for the next month. If you paid with a voucher, you'll need to purchase a new voucher and redeem it in the account area before the end of the current billing period.

What happens if I don't have a credit card saved?

We highly recommend that you have a credit card saved in your account to ensure you don't lose coverage, or your phone number. Once your 30 day billing period has ended, your service will be suspended and you won't be able to send or receive calls, sms or use mobile data. 4 days after your account is suspended and you haven't recharged your account with a voucher or started a new plan with a credit card, your SIM will be barred and you will lose the associated phone number. At this point, to resume a FlexiSIM plan, you will need to order a new SIM card which will come with a brand new phone number. 

What if I use up all my data?

When your data limit has been reached, you'll have the opportunity to add 1GB of data for $10 or you can choose a new plan with a higher data limit. The 30 day billing period will be reset if a new plan is selected.

How do I change my plan?

Log into your account and select 'change plan'. Plans with higher data allowances will start immediately giving you access to your new data allowance straight away, while switching to a plan with a lower allowance will switch when your current billing month (30 day billing period) has ended.

Can I have more than one SIM on my account?

Yes, you can have additional SIMs on your account by logging in to that account during activation. While additional SIMs can be used by other people, all SIMs will be use the same billing method.

How do I change my address or phone details?

How do I change my email address?

What are the charges for international calls, text and data?

By default, international usage of a FlexiSIM is unavailable. To use your SIM overseas, you will need to purchase Overseas Credit and Data Packs. Once Overseas Credit is used up, your SIM will be barred for international use until additional credit is purchased. When you return to Australia, your usual local plan will be available again.

I have used my all my international credit - how do I get more?

You can purchase international credit in My Account

*Terms and conditions:
For Australia Post Mobile FlexiSIM to work, the device must be unlocked and have the ability to operate on a 3G network. For full terms and conditions, rates, plans, and charges visit auspostmobile.com.au. Usage subject to Fair Go Policy. If you choose to keep your exisiting number, early termination fees may apply from your current provider.

How to get started with FlexiSIM

Unlimited talk and text, plus mobile data you can use, share4 and gift.5


Get a FlexiSIM

Buy a $4 FlexiSIM
online or at a participating
Post Office.3

Choose a plan

When you have your
SIM, activate and
select a plan.

Enjoy your FlexiSIM

Enjoy unlimited talk and text and the ability to gift5 or share4 your data with friends and family on FlexiSIM.