Optus was first out of the blocks, with a pre-order offer that will give the proud new owners of a Galaxy S6 or Galaxy S6 edge as much as 6GB of data a month.
The 6GB offer applies to pre-orders of the 32GB Galaxy S6 on a 24 month $80 My Plan Plus contract, and of the 32GB Galaxy S6 edge on a 24 month $80 My Plan Plus contract with an extra $5 a month handset repayment.
The 64GB models are included in the offer, but the 64GB Galaxy S6 attracts a $5 handset repayment each month on top of the plan price. The repayment on the 64GB Samsung Galaxy edge is $12 a month.
"We have packed our plans to the brim with data giving customers plenty of freedom to enjoy their new phone however they like," said Optus vice president of mobile marketing Ben White.
"Streaming your favourite band's latest songs, sharing your holiday snaps on social media or getting your daily cat video fix; it's all possible with 6GB."
Get in quick, as the offer is available until 7 April.
Even if you don't want to spend $80 a month, Optus has another sweetener for Galaxy S6 and Galaxy S6 edge buyers, as well as other new and re-contracting customers.
Two-year contracts on $60 (or more) a month plans get six months of Netflix access for free, although any data usage comes out of the plans' inclusions.
Optus pre-orders open at 5pm today via the company's web site and from 9am tomorrow (31 March) via Optus stores and telesales.
The Samsung Galaxy S6 and Galaxy S6 edge go on sale at Optus on 10 April.