It is last post more than 15 months ago, good time to post again.
Double Data (1st month only)
Do not port/activate on these dates 4th, 12th, 20th, 28th. These are the start of new payment cycles, they are the same every month.
One month worth of data is credited on activation, and another on your first payment date, 1-8 days later. So you effectively get double data for the first monthly payment at no extra cost.
So you will get 3GB data to use in 2 months as per @Arthur Dunger this no longer valid but you still will get a free sim
From the Previous deal:
Follow the deal link to order a FREE Belong Mobile SIM. While you fill in the form, remember to enter a referral code in the Promo code section (get a referral code from OzBargain's randomiser below). When you activate the SIM, you will get a FREE $20 credit to use on any mobile plans (e.g. free 2 months on 1GB plan).
I can also confirm that you can transfer your number from Boost or Telstra to Belong directly.
Traditionally, you had to buy a SIM starter pack to get the $20 referral but with this method, it will cost you nothing.
For everyone's piece of mind, I sent a support request regarding referral credit and this is the reply I got
Original post: https://www.ozbargain.com.au/node/445538