Smart means being intelligent(理解力强的、聪明的) and having the ability to apply knowledge to real situations.
Generally, a smart person is an person who has a lot of knowledge. The knowledge may come from education or experience.
The reason why Smartphone is called “smart” is because it provides right information when you need them.
Smart can also describe a person who looks clean and well dressed.
Jim always gives team very smart answers.
You look very smart today.
Clever means the ability to take the knowledge and experience and use it meaningfully(有意义的) and effectively(有效率的).
A clever person is an person who may not have the required knowledge, but he/she learns things quickly and is able to quickly find solutions to particular problems. Clever implies high creativity and originality of a person.
For example, one leg of the table is broken and i found there is a broken broom(扫帚) nearby, so I fastened(固定) the broom handle(把手) into the table leg. In this case, I am clever to find a solution to my problem.
Jacey is the only person who gave the solution to our problem in my class. She is very clever.
What a so clever idea!
My brother is very clever with his hands.