The 1GB Bonus Data Deal runs from today 13 January - 28 February, but the 1GB bonus is for the life of the mobile plan.
The move was prompted by customer feedback which showed the importance of Internet allowances and data rates, a spokesperson said.
Mobiles on offer on Virgin's $40 and over plans include iPhone 5s, Samsung Galaxy S3 4G and Sony Xperia Z1. The deal also includes BYO plans.
Virgin are also plugging the Samsung S3, available for $0 upfront on the $40 plan over 2 years.
Customers signing up for the 1GB Bonus Data Deal on a $40 Plan will receive: $450 calls, texts & 1.5 GB data per month, including 1GB bonus.
Additional Internet data costs 20.5c per MB.