How do you say Hey in Philippines?

Answer 1

Hey is acceptable since we also speak English. "Hoy!" is informal and could be disrespectful if don't know the person personally. "Oy!" which is shortened version of "Hoy" is much more acceptable but still informal. It depends on how loud you will say it, really.

Answer 2

In the Philippines, you can say "Hi" or "Hello" to greet someone informally. If you want to address someone respectfully, especially an older person, you can say "Po" or "Opo" along with your greeting.