Ch. 16 Terms
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| accelerometer | A type of gyroscope used in mobile devices to sense the physical position of the device.
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| Action Bar | On an Android device, an area at the bottom of the screen that can contain up to five custom software buttons, called Home touch buttons. The three default buttons are back, home, and overview.
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| AirDrop | A feature of iOS whereby iPhones and iPads can transfer files between nearby devices. The devices use Bluetooth to detect nearby devices and Wi-Fi to establish connectivity and transfer files.
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| Airplane mode | A setting within a mobile device that disables the cellular, Wi-Fi, and Bluetooth antennas so the device cannot transmit signals.
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| Android | An operating system used on mobile devices that is based on the Linux OS and supported by Google.
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| APK (Android Application Package) | The format used by Android apps for distributing the app in a package of files wrapped into one file with an .apk file extension.
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| App Store | The app on an Apple device (iPad, iPhone, or iPod touch) that can be used to download content from the iTunes Store website (itunes.apple.com).
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| Apple ID | A user account that uses a valid email address and password and is associated with a credit card number that allows you to download iOS updates and patches, apps, and multimedia content.
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| Apps Drawer | An Android app that lists and manages all apps installed on the device. By default, this app's icon is in the Favorites tray on an Android screen.
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| Bluetooth PIN code | A code that may be required to complete the Bluetooth connection in a pairing process.
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| closed source | Software owned by a vendor that requires a commercial license to install and use the software. Also called vendor-specific software or commercial license software.
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| emergency notifications | Government alerts, such as AMBER alerts, that are sent to mobile devices in an emergency.
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| factory default | To restore a mobile device or other computer to its state at the time of purchase. The operating system is reinstalled and all user data and settings are lost.
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| Favorites tray | On Android devices, the area above the Action bar that contains up to seven apps or groups of apps. These apps stay put as you move from home screen to home screen.
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| force stop | To abruptly end an app without allowing the app to go through its close process.
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| geotracking | A mobile device routinely reports its position to Apple, Google, or Microsoft at least twice a day, which makes it possible for these companies to track your device's whereabouts.
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| Gmail | An email service provided by Google at mail.google.com.
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| Google account | A user account, which is a valid email address, that is registered on the Google Play website (play.google.com) and is used to download content to an Android device.
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| Google Play | The official source for Android apps, also called the Android marketplace, at play.google.com.
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| GPS (Global Positioning System) | A receiver that uses the system of 24 or more satellites orbiting the Earth. The receiver locates four or more of these satellites, and from these four locations, calculates its own position in a process called triangulation.
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| gyroscope | A device that contains a disc that is free to move and can respond to gravity as the device is moved.
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| Handoff | A technique of devices and computers made by Apple that lets you start a task on one device, such as an iPad, then pick up that task on another device, such as a Mac desktop or laptop.
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| hard reset | For Android devices, a factory reset, which erases all data and settings and restores the device to its original factory default state.
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| hotspot | A small area that offers connectivity to a wireless network, such as a Wi-Fi network.
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| ICloud backup | A feature of an iPhone, iPad, or iPod touch whereby the device's content is backed up to the cloud at icloud.com.
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| iCloud Drive | Storage space at icloud.com that can be synced with files stored on any Apple mobile device or any personal computer, including an OS X or Windows computer.
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| IMEI (International Mobile Equipment Identity) | A unique number that identifies a mobile phone or tablet device worldwide. The number can usually be found imprinted on the device or reported in the About menu of the OS.
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| IMSI (International Mobile Subscriber Identity) | A unique number that identifies a cellular subscription for a device or subscriber, along with its home country and mobile network. Some carriers store the number on a SIM card installed in the device.
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| iOS | The operating system owned and developed by Apple and used for its various mobile devices.
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| iPad | A handheld tablet developed by Apple.
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| iPhone | A smart phone developed by Apple.
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| iPod touch | A multimedia recorder and player developed by Apple.
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| iTunes Store | Apple website itunes.apple.com where apps, music, TV shows, movies, books, podcasts, and iTunes U content can be purchased and downloaded to Apple devices
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| iTunes U | Content at the iTunes Store website (itunes.apple.com) that contains lectures and even complete courses from many schools, colleges, and universities.
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| jailbreaking | A process to break through the restrictions that only allow apps to an iOS device to be downloaded from the iTunes Store.
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| launcher | The Android graphical user interface (GUI) that includes multiple home screens, and supports windows, panes, and 3D graphics.
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| location data | Data that a device can routinely report to a website, which can be used to locate the device on a map.
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| Microsoft Exchange | A server application that can handle email, contacts, and calendars and is a popular application used by large corporations for employee email, contacts, and calendars.
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| Microsoft Store | The official source for Windows apps at microsoftstore.com.
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| Miracast | A wireless display-mirroring technology that requires a Miracast-capable screen or dongle in order to mirror a smart phone's display to a TV, a wireless monitor, or a wireless projector.
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| mobile payment service | An app that allows you to use your smart phone or other mobile device to pay for merchandise or services at a retail checkout counter.
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| notifications | Alerts and related information about apps and social media sent to mobile devices.
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| open source | Source code for an operating system or other software whereby the source code is available for free and anyone can modify and redistribute the source code.
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| pairing | The process of two Bluetooth devices establishing connectivity.
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| PRL (Preferred Roaming List) | A list of preferred service providers or radio frequencies your carrier wants a mobile device to use and is stored on a Removable User Identity Module (R-UIM) card installed in the device.
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| Product Release Instructions (PRI) | Information published by the manufacturer of an operating system that describes what to expect from a published update to the OS.
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| rooting | The process of obtaining root or administrator privileges to an Android device, which then gives you complete access to the entire file system and all commands and features.
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| screen orientation | The layout or orientation of the screen that is either portrait or landscape.
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| SDK (Software Development Kit) | A group of tools that developers use to write apps. For example, Android Studio is a free SDK that is released as open source.
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| S/MIME (Secure Multipurpose Internet Mail Extensions) | A protocol that encrypts an outgoing email message and includes a digital signature and is more secure than SMTP, which does not use encryption.
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| soft reset | For Android, to forcefully reboot the device (full shut down and cold boot) by pressing and holding the power button. For iOS, to put the device in hibernation and not clear memory by pressing the Wake/sleep button.
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| tethering | To connect a mobile device with a cellular connection to the Internet to a computer so that the computer can access the Internet by way of the mobile device.
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| virtual assistant | A mobile device app that responds to a user's voice commands with a personable, conversational interaction to perform tasks and retrieve information. Also called a personal assistant.
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| WiFi calling | On mobile devices, voice calls that use VoIP over a Wi-Fi connection to the Internet.
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| Windows Phone (WP) | An operating system by Microsoft (microsoft.com) that is based on Windows and is used on various smart phones (not on tablets).
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