Hi-fi & internal mobile phone; What does smart mean?

Hi-Fi is the abbreviation of English High-Fidelity, which literally translates as "hi-fi", meaning a reproduced sound that is highly similar to the original sound.

Intelligence is intelligent somatosensory operation.

Extended reading:

Hi-fi system can be divided into integrated, packaged and combined.

(1) Integrated sound system is to assemble all kinds of functional equipment and speakers in a box, which cannot be disassembled at will. This kind of machine is generally low-grade and popular.

② The packaging sound system is designed by the manufacturer, with various equipment and detachable units.

(3) Sound combination is to choose various types of equipment according to personal hobbies and freely combine them.

Intelligent somatosensory device is a machine connected to the game host, which receives the player's action or voice information through sensors, thus completing the game conversion. Somatosensory devices break through the traditional game mode, making players lose the game control handle, that is, they can interact without direct contact.