You can get 24 hours of unlimited mobile data in Japan for free with povo2.0's eSIM — just use code JAPANSIM24H. It's perfect for your first day: maps, messages, and finding your hotel. Sign up online before or after you land, verify with your Australian number, and pay with a credit card (required for sign-up). The eSIM works on the au network. Just note: you'll need an eSIM-compatible phone, it's data-only (no calls or SMS), and the code won't work if you already have an active unlimited plan. Speeds may slow during busy periods.
