Google services work fine in Hong Kong (unlike Mainland China), so Maps and Chrome are reliable. An Octopus card is non-negotiable for getting around. Pick one up at the airport or use the Octopus app on iPhone. Cash is still widely accepted but contactless payments are growing fast.
Hong Kong's stored value card in app form. Add Octopus to Apple Wallet, top up with your home Visa, Mastercard or UnionPay, and tap for the MTR, buses and convenience stores.
Hong Kong's most used QR wallet, accepted in taxis, wet markets, cha chaan tengs and on buses. It runs separately from mainland China's Alipay app.
These apps need data
Guac eSIM covers Hong Kong with plans from $1.50 per GB. Install it before you land and activate instantly.