Cash is still king outside Metro Manila. Download GCash before you go but always carry pesos as a backup. English is widely spoken, so language apps are optional, but navigation apps are a must given Manila's notoriously unpredictable traffic.
The Philippines' leading mobile wallet, accepted at convenience stores, markets, and restaurants via QR code.
These apps need data
Guac eSIM covers Philippines with plans from $1.50 per GB. Install it before you land and activate instantly.