S - Definitions

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  • S

    Samsung Galaxy

    Samsung Galaxy is a product line of Android smartphones, tablets and internet of things devices manufactured by Samsung Electronics.

  • satellite

    A satellite is any object that orbits something else, as, for example, the Earth orbits the sun.

  • service set identifier (SSID)

    A service set identifier (SSID) is a sequence of characters that uniquely names a Wi-Fi network.

  • Short Message Service (SMS)

    SMS (Short Message Service), commonly referred to as 'text messaging,' is a service for sending short messages of up to 160 characters (224 character limit if using a 5-bit mode) to mobile devices, including cellular phones, smartphones and tablets.

  • short message service center (SMSC)

    The short message service center (SMSC) is the portion of a mobile phone network that handles text message operations.

  • sideloading

    Sideloading is the installation of an application on a mobile device without using the device's official application distribution method.

  • SIM card

    A SIM card, also known as a subscriber identity module, is a smart card that stores identification information that pinpoints a smartphone to a specific mobile network.

  • Siri

    Siri is Apple's virtual assistant for iOS, macOS, tvOS and watchOS devices that uses voice recognition and is powered by artificial intelligence (AI).

  • smartphone

    A smartphone is a cellular telephone with an integrated computer and other features not originally associated with telephones, such as an operating system (OS), web browsing and the ability to run software applications.

  • smishing (SMS phishing)

    Smishing -- or Short Message Service (SMS) phishing -- is a social engineering tactic cybercriminals use to trick people into divulging sensitive information over text messages.

  • SMS gateway

    An SMS gateway is a website that allows users to send SMS messages from a web browser to people within the cell served by that gateway. An SMS gateway can also serve as an international gateway for users with roaming capability, allowing SMS communication away from the home network.

  • SMS spam (cell phone spam or short messaging service spam)

    SMS spam (sometimes called cell phone spam) is any junk message delivered to a mobile phone as text messaging through the Short Message Service (SMS). The practice is fairly rare in North America, but has been common in Japan for years. In 2001-2002, the systems at DoCoMo, the country's major service provider, were overcome by the volume of SMS spam, causing users' screens to freeze and spreading programs that caused the phones to dial emergency numbers.

  • Snapchat

    Snapchat is a mobile app that allows users to send and receive "self-destructing" photos and videos. Photos and videos taken with the app are called snaps.

  • spectrum efficiency

    Spectrum efficiency describes the amount of data transmitted over a given spectrum or bandwidth with minimum transmission errors.

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