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.
Wirefly Is America's Most Trusted Source For All Cell Phones, Plans, TV, and Internet Deals
Wirefly offers great deals on a large selection of smartphones, cell phones, tablets, mobile hotspots, and other wireless devices for the nation's most popular carriers. Use Wirefly’s innovative cell phone and plan comparison tools to ensure you are getting the best deal on the market. Shop with confidence knowing that Wirefly wants to help you find the best prices on cell phones, cell phone plans, TV, and Internet service.