How different between "How about you?" and "What about you?" ....?
How different between "How about you?" and "What about you?"

or it's same?

thank you.

Question

How different between "How about you?" and "What about you?"   ....?
How different between "How about you?" and "What about you?"

or it's same?

thank you.

Answer

Would come to be the same.
Just change
"how"  "What"

^    ^

Answer

Your question is: Is there a difference between How about you? and What about you? or are they the same?    The answer is yes, they are interchangable, yet 'How about you?' is the formal one of the two. I suggest you choose one and always use it in your learning process.

Kind Regards

Answer

I am not finding a time when these are not Interchangeable.  I am givving the green light on that.

Answer

It's the same meaning.