Formal:
* Auhea ʻoe? (pronounced: ow-hey-ah oh-eh) - This is the most formal way to ask "Where are you?"
* Ma hea ʻoe? (pronounced: mah-hey-ah oh-eh) - This is a slightly less formal but still polite way to ask.
Informal:
* Auhea? (pronounced: ow-hey-ah) - This is a shortened version of "Auhea ʻoe?" and is used in casual conversation.
* Ma hea? (pronounced: mah-hey-ah) - This is a shortened version of "Ma hea ʻoe?" and is also used in casual conversation.
You could also use a phrase like ʻAuhea ʻoe e noho ana? (pronounced: ow-hey-ah oh-eh eh no-hoh ah-nah) which literally means "Where are you staying?". This is a polite way to ask someone where they are, especially if you are unsure of their location.
Remember that the "ʻokina" (the apostrophe) is a very important part of Hawaiian pronunciation, so make sure to include it when speaking the language.