How to view the SMS of the associated mobile phone on the tablet?

At present, only Apple can. Both devices must log in to the same appleID and open icloud at the same time.

Tablet computer (Pad) is a small portable personal computer, with touch screen as the basic input device. Its touch-screen capacitive screen (also known as tablet technology) allows users to do their homework with a stylus or digital pen instead of a traditional keyboard or mouse. Users can enter text through the built-in handwriting recognition, on-screen soft keyboard, voice recognition or real keyboard (if the model is equipped).