If people told me that I was sophisticated, I'd know they were lying! :)))))))))))))))))))))))))

It is a very nice compliment. It means : having a good understanding of the way people behave and/or a good knowledge of culture and fashion http://dictionary.cambridge.org/dictionary/british/sophisticated?q=sophisticated

It is definitely a compliment. It means that you are aware of complex and subtle issues and are capable of understanding them. If I say a person is has a sophisticated knowledge of English, it means they have an understanding of the fine points, not just the basic grammar and vocabulary.

Hi Rainbow , yes, this word " sophisticated" is positive in English and different from Chinese. Very interesting , right ?

It's quite different from Chinese.