A person sitting and raising her hand in a circular icon.

Icon of Person Raising Hand

A front view of a smartphone or a tablet with a touchscreen and a button.

Smartphone

A circular icon containing a telephone symbol. 

A person sitting down, with his computer and headphones, participating in an online class, watching a movie or listening to music.

A smartphone with a touch screen and bezels.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.