China Unicorn Asia SIM. Roams to all of: 4G network - Hong Kong, Macau, Taiwan, Japan, South Korea, Singapore, Thailand, Malaysia, Indonesia, Philippines & Cambodia 3G network - Laos SIM card …
Go to https://www.cuniq.com/ and change your country to HK then go to this link for the sim. I've confirmed with customer service that orders from their HK page can be shipped to Australia. …