What is the Finnish word for 'hello'?

Answer 1

There are several ways:

Terve

Hyvää päivää

Päivää

Moi

Hei

On the Telephone it's "Haloo"
Hei, moro, moi, terve (there are many more but those are very common)

On the phone: Haloo

Answer 2

Both of these mean the same thing: Moi, Hei.

Answer 3

Hei.