What about and how about

Hello sir,
what is the meaning of this two phrases ‘what about’ and ‘how about’? Is there any difference of meaning between them? A:how’re you? B: I’m fine. Thank you. What about you? Here could I use, how about you? Sir, please give some example to use of them. Please correct me if I’m wrong. Because I’m very poor in english. Thanks


You have the right idea about these expressions and I wouldn’t say you are at all poor in English.

Here are two examples:

A I’m going to the dance tonight. How about you? (Are you going?)

A I am going to vote for the radical party next week. What about you? (How are you going to vote?)

The meanings are really the same.