- Android is an open source software package and operating system for mobile devices like smartphones and tablets. It is developed by Google and other members of the Open Handset Alliance, primarily using the Java programming language. The goal is to create a successful product that improves the mobile experience for users. - Android has released several major versions with new features for both users and developers. Version 1.5 included an on-screen keyboard and Bluetooth support. Version 2.0-2.1 added support for near field communication and VoIP capabilities. Version 6.0 focused on improving the user experience and included new permissions and features like "Now on Tap". Version 7.0 introduced abilities like split-screen multitasking and inline replies to

2. • Androidis asoftwarepackageandLinux basedoperating
systemfor mobiledevicessuchastabletcomputersand
smartphones.
• It isdevelopedbyGoogleandlatertheOHA (Open
HandsetAlliance).Javalanguageismainlyusedtowrite
theandroidcodeeventhoughotherlanguagescanbeused.
• Thegoalofandroidprojectistocreateasuccessfulreal-
worldproductthatimprovesthemobileexperiencefor end
users.

6. • Android 1.5 Cupcake was the second Android
version developed by Google, a major platform
release deployable to Android-powered handsets
starting in May 2009. The release includes new
features for users and developers, as well as
changes in the Android framework API.
• Android 1.5 included new features such as an on-
screen keyboard and Bluetooth support as well as
improvements to existing features such as UI
changes for application management and several
Google apps.

8. Android 2.0–2.1 "Eclair" is a discontinued version
of the Android mobile operating system
developed by Google. Unveiled on October 26,
2009, Android 2.1 builds upon the significant
changes made by Android 1.6 "Donut".Two major
additions in Eclair were support for near field
communication (NFC) (used in mobile payment
solutions) and session initiation protocol (SIP)
(used in VoIP internet telephony).

15. LOLLIPOP

16. Android "Marshmallow"(codenamedM in-development)is the6th major
version of the Android operating system. First unveiled in May 2015 at
GoogleI/O, it wasofficiallyreleasedin October2015.
Marshmallowprimarilyfocusesonimprovingtheoverall userexperienceof
Lollipop, introducinganewpermissionsarchitecture,newAPIs for
contextualassistants(afeaturenotablyleveragedby"Now On Tap"—a
newcapabilityoftheGooglesearchingbycontextualizinganappintoa
simplerinterfacebyGoogle)Now,anewpowermanagementsystemthat
reducesbackgroundactivitywhenadeviceisnotbeingphysicallyhandled,
nativesupportfor fingerprint recognitionandUSB Type-C connectors,the
abilitytomigratedataandapplicationstoamicroSDcardanduseit as
primarystorage,andotherinternal changes

17. Android7.0 "
Nougat"istheseventhmajor versionof the
Androidoperatingsystem.First releasedasabetabuildon
March9, 2016,]it wasofficially releasedonAugust 22, 2016,
withNexusdevicesbeingthefirst toreceivetheupdate.
Nougatintroducesnotablechangestotheoperatingsystemand
its developmentplatform,includingtheabilitytodisplay
multipleappson-screenatoncein asplit-screen view,support
for inline repliestonotifications,aswell asan OpenJDK-based
Javaenvironmentand supportforthe Vulkan graphics
renderingAPI, and"seamless"systemupdatesonsupported
devices