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Glossary: S – Z

Wirefly Learn » Resources » Glossary

April 15th, 2009



Service Charge – The fixed amount a wireless customer agrees to pay each month for wireless service.

Service Plan – The monthly plan selected by a wireless subscriber that usually includes an allotted number of minutes, and may include other services such as text messaging.

Short Messaging Service (SMS) – The ability to send and receive short alphanumeric text messages on a mobile device.

SIM Card – A small, usually rectangular chip that is associated with a wireless subscriber’s account and phone number. Inserted into a device to associate it with a subscriber, and allow for incoming and outgoing calls, as well as data access.

Sleep Mode – The mode a device automatically enters to conserve battery life after a specified period of inactivity. In most cases, pressing any button on a device’s keypad will “wake” the device.

Smartphone – A term used to refer to any device that offers advanced abilities to handle data beyond just voice. Smartphones often have a keyboard or large touch screen, and usually provide access to email and other data.

Standby Time – The amount of time a mobile device can remain in an on and active state where it is able to receive calls before the device must be recharged.

Subscriber Identity Module (SIM) – See ‘SIM Card.’

Sync – See ‘PC Sync.’

T9 – See ‘Predictive Text Entry.’

Talk Time – The amount of time a mobile device can be talked on before it must be recharged.

Text Messaging – See ‘Short Messaging Service (SMS).’

Third Generation (3G) – See ’3G.’

Unlocked Device – Usually refers to a device that is capable of operating on any compatible wireless network. Also see ‘Locked Device.’

Usage charge – A fee additional to monthly service charges that accounts for usage overages or the use of services not subscribed to. Minutes used beyond a monthly allotment, for example, will be assessed usage charges.

Voice Activation & Voice Calling The ability to make a phone call or activate a particular feature or application by speaking a name or command.

Voice Memo – The ability to record a short voice message that can be played back at any time. Often used to record a reminder or grocery list, for example.

VoIP (Voice over Internet Protocol) – A data transmission technology that allows standard voice calls to be transmitted over the internet or other-packet based network.

Wireless Application Protocol (WAP) – A set of standards that enables mobile devices to access and display web pages or other online resources.

Wi-Fi – Refers to a wireless local area network. The technology used to access a network, notably the internet, wirelessly if in range of a wireless router.

Windows Mobile – An operating system developed by Microsoft specifically for mobile devices.

Wireline – See ‘Landline.’

World Phone – Usually refers to a mobile device that supports four bands or frequencies. Able to connect to varying wireless networks around the world.

Related posts:

  1. Glossary: C – G
  2. Glossary: H – N
  3. Glossary: O – R
  4. Glossary: 0 – B

One Response to “Glossary: S – Z”

  • Thomas Dixon
    September 28, 2010

    Need help to obtain a sim card to get service through AT and T.

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