Young man using smartphone with green screen close-up. Guy holding mobile phone, surfing the internet, watching video.
Music school student using tablet as music sheet with notes, learning how to play on line. Guitar player, man using ipad. People sitting on sofa, playing musical instrument. Green screen, monitor
Student using smartphone with green screen in colonnade hallway. Close up person browsing internet on mobile phone with chroma key. Businessperson working on cellphone.