I used Cambodia’s first ride-hailing service, “Pass App” on this trip. It looks like a small tuk-tuk. The feature is that the body color is white. Users can call the driver anytime, anywhere by putting the app on their smartphone. The system is exactly Uber in Cambodia.
[pass app] : https://www.softbank.jp/en/mobile/service/app-pass/
To be honest, the Pass App tuk-tuk was available without the app. The PassApp driver was very hospitality and waited in my sight near the exit of a crowded tourist destination, but he didn’t ask for a tip.