The phrase "What about you" in Hindi can be translated as:

• "और तुम?" (Aur tum?)
• "और आप?" (Aur aap?) - more formal
• "तुम्हारा क्या?" (Tumhara kya?)
• "आपका क्या?" (Aapka kya?) - more formal

These are commonly used to ask someone about their opinion, feelings, or situation after sharing your own. If you want a full sentence example:

• "मैं ठीक हूँ, और तुम?"
  (Main theek hoon, aur tum?)

  • "I am fine, what about you?"

Let me know if you want usage examples or more formal/informal variations!