What does nani o shite dayo mean?

"Nani o shite dayo" is a Japanese phrase that translates to "What are you doing?" in English. It is often used informally in conversations to inquire about someone's current activity or to express curiOSity about their actions. The phrase combines "nani" (what), "o" (object marker), "shite" (doing), and "dayo" (a casual way to assert or confirm).