Unlimited Data Day is available on selected month-to-month SIM plans, Data plans and Prepaid services. For use on mobile phones and tablet devices in Australia only. Fair Go policy applies. Check out our full terms and conditions for more information.

Month-to-month SIM plans:

Automatic Payment plans, Optus Choice, Optus One, Optus Family, Optus Kids and Optus Choice Data plans.

Prepaid Mobile:

Customers on the Optus Flex Plus, Optus Flex Plus Casual, Optus Epic Data, Optus Epic Value and Optus Flex Plus Traveller plan options.

For month-to-month SIM and Data plans

Unlimited Data Day is a $6 Add-on that will give you unlimited data to use for a 24-hour period from activation. Add-on usually activates within 15 minutes of purchase.

You can add as many $6 Add-ons as you want in the month. Keep in mind, that there can only be one Add-on per service at any time. You can purchase an additional pack once your last pack has expired. Additional packs can only be ordered after the first ends.

The data cannot be shared with the other services on the account.

For Prepaid Mobile

Unlimited Data Day is a $6 Add On that will give you unlimited data to use within a day from purchase.

You can add as many $6 Add Ons as you want in the month, as long as you're within an active recharge expiry period.

Keep in mind, that there can only be one Add On per service at any time. You can purchase an additional pack once your last pack has expired. Purchasing an additional Add On will not offer any benefit until an existing one expires.

How to add Unlimited Data Day Add-on in the My Optus app.

For month-to-month SIM and Data plans:

1. Open the My Optus app
2. Tap the Service Tab on the bottom of the screen
3. Tap Add-ons
   
4. Tap Data
   
5. Read summary and view terms and conditions
   
6. Tap Buy Now 
   
   

For Prepaid:

9999 SMS

Text the word MENU to 9999 from your Optus Prepaid Mobile Phone and follow the prompts.

My Optus App

1. Open the My Optus app
2. Tap the Recharge Tab on the bottom of the screen
3. Tap Add Ons
   
4. Tap Buy Add on in the Unlimited Data Day banner
   
5. Tap Okay
   
6. Tap Pay
7. A confirmation of purchase will be displayed

Yes, this can only be used for domestic data and can't be used when roaming.

Yes, this covers 3G, 4G and 5G data. 5G is available in selected areas (excl. NT) and on selected plans. 5G capable devices and plan required to access 5G (where available). 

All data used from the service within this 24 hour period won't count towards your regular data share.

No, unlimited data add-on is only for the eligible service. Other services on your account will continue to use your account shared data or excess data tiers (charged at $10 per $1GB). Prepaid isn't eligible for data sharing. 

For month-to-month SIM and Data plans, an order confirmation and expiry notification will be sent to the Account Holder. On activation, a notification will be sent to the service user. If other services on the account reach 50, 85 or 100% of their data share or excess tiers, these messages will still be sent.

Prepaid services won't receive notification alerts, however, can check expiry at any time via My Optus app, or by texting BAL to 9999.

For Postpaid, yes, it will give you unlimited data to use for a 24-hour period from activation. When the 24 hours has completed, you'll go back to a maximum speed of 1.5Mbps. Unless you start a new payment cycle, you'll go back to using your included data.


For Prepaid, you must be within your active recharge expiry period to purchase this add-on.

For mobile and tablet usage only. 

Yes, you must be within an active recharge expiry period to purchase an Unlimited Data Day Add-on.

You can't add multiple Unlimited Data Day Add-ons. The pack will need to expire before you can purchase again.