The Optus Unlimited Data Day add-on is aimed especially at people who sometimes need a data boost to satisfy their streaming video demands.

“Our offer calls on all lovers of data, giving them 24 hours of data to do as much of the things they love as they can. This may involve bingeing Netflix on high definition for 24 hours, which would normally go through 72GB of data," said Optus managing director of marketing and revenue Matt Williams.

“We know our customers want great value and for the price they would typically pay for their morning coffee- our new Unlimited Data Day opens up infinite possibilities.”

The $5 add-on is available on the Optus Choice, Optus One, Optus Family and Optus Kids postpaid plans, and on the prepaid Epic Data plan with a minimum $30 recharge. It can only be used on mobile phone devices in Australia, and data sharing is not allowed.

The add-on covers 3G, 4G and 5G data, and is normally activated within 15 minutes of purchasing it through the My Optus app.