Open NEW Suncorp Bank Account with a linked Visa Debit card between 1st Dec 2018 and 31st Jan 2019.
Took me about a minute to open account with online verification.

Use Apple pay on 5 separate transactions by 31st March 2019 with the linked Visa debit card, to get a $50 cashback.

T&Cs: https://www.suncorp.com.au/banking/help-support/ways-to-bank…

Note
– Does not say new customers, just new bank account. List of eligible bank accounts below
– No code to enter just click through and satisfy the conditions (I guess!)
– Update – After about 10 minutes from Bank account opening, I was able to register for Suncorp App (Benefits – for egiftcard deals). Also as per this comment https://www.ozbargain.com.au/node/422878#comment-6691569, using the browser on computer I can add the Woolworths $500 egiftcard and get to checkout/payment page.

Eligible Transaction Account includes the following Suncorp Bank accounts:
Everyday Options Account
Everyday Basics Account
Everyday Essentials Account
55 Plus Account
Cash Management Account
Wealth Cash Management Account
Freedom Access Account
Access Equity Account
Business Everyday Account
Business Premium Account

The “Everyday Basics/Options” transaction accounts are probably the most common types to open, Basic is $0/month fees, stand alone everyday transaction account. Everyday Options is currently also $0/month if you open before 28/2/2019. You can add interest-earning sub accounts to this Account.