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===Interface===
Android's user interface is based on [[Direct manipulation interface|direct manipulation]],<ref name="touch">{{cite web|url=http://source.android.com/tech/input/touch-devices.html |title=Touch Devices | Android Open Source |publisher=Source.android.com |date=|accessdate=2012-09-15}}</ref> using touch inputs that loosely correspond to real-world actions, like swiping, tapping, pinching and reverse pinching to manipulate on-screen objects.<ref name="touch" /> The response to user input is designed to be immediate and provides a fluid touch interface, often using the vibration capabilities of the device to provide [[haptic feedback]] to the user. Internal hardware such as [[accelerometer]]s, [[gyroscope]]s and [[proximity sensor]]s are used by some applications to respond to additional user actions, for example adjusting the screen from portrait to landscape depending on how the device is oriented, or allowing the user to steer a vehicle in a racing game by rotating the device, simulating control of a [[steering wheel]].<ref>{{cite web|url=http://phandroid.com/2011/12/22/real-racing-2-speeds-into-the-android-market-leaves-part-1-in-the-dust/ |title=Real Racing 2 Speeds Into The Android Market – Leaves Part 1 In The Dust |publisher=Phandroid.com |date=2011-12-22 |accessdate=2012-09-15}}</ref>
Android devices boot to the homescreen, the primary navigation and information point on the device, which is similar to the [[Desktop metaphor|desktop]] found on PCs. Android homescreens are typically made up of app icons and [[Software widget|widget]]s; app icons launch the associated app, whereas widgets display live, auto-updating content such as the weather forecast, the user's email inbox, or a [[news ticker]] directly on the homescreen.<ref>{{cite web|url=http://developer.android.com/design/patterns/widgets.html |title=Widgets | Android Developers |publisher=Developer.android.com |date=|accessdate=2012-09-15}}</ref> A homescreen may be made up of several pages that the user can swipe back and forth between, though Android's homescreen interface is heavily customisable, allowing the user to adjust the look and feel of the device to their tastes. Third party apps available on [[Google Play]] and other app stores can extensively re-[[Theme (computing)|theme]] the homescreen, and even mimic the look of other operating systems, such as [[Windows Phone]].<ref>{{cite web|url=http://lifehacker.com/5804091/launcher-7-brings-windows-phones-simple-attractive-interface-to-android |title=Launcher 7 Brings Windows Phone's Simple, Attractive Interface to Android |publisher=Lifehacker.com |date=2011-05-20 |accessdate=2012-11-24}}</ref> Most manufacturers, and some [[Mobile phone operator|wireless carriers]], customise the look and feel of their Android devices to differentiate themselves from their competitors.<ref>{{cite book|last1=Begun |first1=Daniel A. |title=Amazing Android Apps |url=http://www.dummies.com/store/product/Amazing-Android-Apps-For-Dummies.productCd-0470936290.html |archiveurl=|archivedate=|accessdate=2013-05-22 |type=|edition=|series=[[For Dummies]] |volume=|year=2011 |month=March |origyear=2011 |publisher=[[John Wiley & Sons|Wiley]] |isbn=978-0-470-93629-0 |oclc=|doi=|id=|page=7 |chapter=Dealing with fragmentation on Android devices |chapterurl=http://www.dummies.com/how-to/content/looking-at-the-android-operating-system0.html |quote=|ref=|bibcode=}}</ref>
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