A smartphone is a portable personal computer with a mobile operating system with features useful for handheld use. Smartphones, which are typically pocket-sized (as opposed to tablets, which are much larger than a pocket), have the ability to place and receive voice/video calls and create and receive text messages, have virtual assistants (such as Siri, Google Assistant, Alexa, Cortana, Bixby), a note-taking application, an event calendar, a media player, video games, GPS navigation, digital ...