Android (operating system)wikipedia
Android is a mobile operating system developed by Google, based on a modified version of the Linux kernel and other open source software and designed primarily for touchscreen mobile devices such as smartphones and tablets.
AndroidAndroid operating systemAndroid OSGoogle AndroidDroidAndroid appAndroid devicesAndroid phonesAndroid-basedAndroid platform

Android TV

televisionTV
In addition, Google has further developed Android TV for televisions, Android Auto for cars, and Wear OS for wrist watches, each with a specialized user interface.
Android TV is a version of the Android operating system designed for digital media players.

Wear OS

smartwatchWear OS By GoogleWear
In addition, Google has further developed Android TV for televisions, Android Auto for cars, and Wear OS for wrist watches, each with a specialized user interface.
Wear OS, formally known as Wear OS by Google, and previously known as Android Wear, is a version of Google's Android operating system designed for smartwatches and other wearables.

Android Auto

android autocarAuto
In addition, Google has further developed Android TV for televisions, Android Auto for cars, and Wear OS for wrist watches, each with a specialized user interface.
Android Auto (stylised androidauto) is a mobile app developed by Google to mirror features from an Android device (e.g., smartphone) to a car's compatible in-dash information and entertainment head unit or to a dashcam.

Fire OS

Android OS (customized)FireOSFire OS 5 "Bellini
These apps are licensed by manufacturers of Android devices certified under standards imposed by Google, but AOSP has been used as the basis of competing Android ecosystems, such as Amazon.com's Fire OS, which use their own equivalents to the Google Mobile Services.
Amazon Fire OS is an Android-based mobile operating system produced by Amazon for its Fire Phone and Kindle Fire range of tablets, Echo and Echo Dot, and other content delivery devices like Fire TV; the tablet versions of the Kindle e-readers are the Fire range.

Linux kernel

LinuxkernelLinux kernel
Android is a mobile operating system developed by Google, based on a modified version of the Linux kernel and other open source software and designed primarily for touchscreen mobile devices such as smartphones and tablets.
The Android operating system for tablet computers, smartphones, and smartwatches uses services provided by the Linux kernel to implement its functionality.

HTC Dream

G1first commercial Android deviceDream
Initially developed by Android Inc., which Google bought in 2005, Android was unveiled in 2007, with the first commercial Android device launched in September 2008.
First released in September 2008, the Dream was the first commercially released device to use the Linux-based Android operating system, which was purchased and further developed by Google and the Open Handset Alliance to create an open competitor to other major smartphone platforms of the time, such as Symbian operating system, BlackBerry OS, and iPhone OS.

Google

GoogleGoogle Inc.Google, Inc.
Android is a mobile operating system developed by Google, based on a modified version of the Linux kernel and other open source software and designed primarily for touchscreen mobile devices such as smartphones and tablets.
The company leads the development of the Android mobile operating system, the Google Chrome web browser, and Chrome OS, a lightweight operating system based on the Chrome browser.

App store

app storeapplication storeapp stores
Android is also associated with a suite of proprietary software developed by Google, including core apps for services such as Gmail and Google Search, as well as the application store and digital distribution platform Google Play, and associated development platform.
Apps are designed to run on specific devices, and are written for a specific operating system (such as iOS, macOS, Windows, or Android).

Windows Mobile

Windows MobileMobileWindows Mobile 6
The company then decided that the market for cameras was not large enough for its goals, and by five months later it had diverted its efforts and was pitching Android as a handset operating system that would rival Symbian and Microsoft Windows Mobile.
By 2007, it was a moderately successful OS on mobile device in the U.S., but this initial popularity faded rapidly, in the following years, and by February 2010, facing competition from rival mobile OSs, including Apple's iOS and Android, Microsoft announced Windows Phone to supersede Windows Mobile.

BlackBerry

BlackBerryCrackberryBlackBerry OS
An early prototype had a close resemblance to a BlackBerry phone, with no touchscreen and a physical QWERTY keyboard, but the arrival of 2007's Apple iPhone meant that Android "had to go back to the drawing board".
However, BlackBerry has since lost its dominant position in the market due to the success of the Android and iOS platforms; the same numbers had fallen to 23 million in March 2016.

Mobile operating system

mobile operating systemmobile platformsmobile OS
Android is a mobile operating system developed by Google, based on a modified version of the Linux kernel and other open source software and designed primarily for touchscreen mobile devices such as smartphones and tablets.
By Q1 2018, over 383 million smartphones were sold with 85.9 percent running Android, 14.1 percent running iOS and other OSes negligible.

Android Pie

9.0 "PieAndroid 9.0 "PieAndroid 9.0
The operating system has since gone through multiple major releases, with the current version being 9.0 "Pie", released in August 2018.
Android "Pie" (codenamed Android P during development) is the ninth major update and the 16th version of the Android operating system.

Samsung Galaxy S4

Galaxy S4S4Galaxy S4 Accessories
At its developer conference in May 2013, Google announced a special version of the Samsung Galaxy S4, where, instead of using Samsung's own Android customization, the phone ran "stock Android" and was promised to receive new system updates fast.
The Samsung Galaxy S4 is an Android smartphone produced by Samsung Electronics and was first shown publicly on March 14, 2013 at Samsung Mobile Unpacked in New York City.

Symbian

SymbianSymbian OSSymbian^3
The company then decided that the market for cameras was not large enough for its goals, and by five months later it had diverted its efforts and was pitching Android as a handset operating system that would rival Symbian and Microsoft Windows Mobile.
As a pioneer that established the smartphone industry, it was the most popular smartphone OS on a worldwide average until the end of 2010 at a time when smartphones were in limited use, when it was overtaken by Android, as Google and its partners achieved wide adoption.

Linux

GNU/LinuxLinuxLin
Within a year, the Open Handset Alliance faced two other open source competitors, the Symbian Foundation and the LiMo Foundation, the latter also developing a Linux-based mobile operating system like Google.
Because of the dominance of the Linux kernel-based Android OS on smartphones, Linux has the largest installed base of all general-purpose operating systems.

Andy Rubin

Andy Rubin
Android Inc. was founded in Palo Alto, California, in October 2003 by Andy Rubin, Rich Miner, Nick Sears, and Chris White.
He is the co-founder and former CEO of both Danger Inc. and Android Inc. Andy and his wife, Rie, also own and operate Voyageur du Temps, a bakery in Los Altos, California.

HTC One (M7)

HTC OneOne (M7)HTC One (M7)
The device would become the start of the Google Play edition program, and was followed by other devices, including the HTC One Google Play edition, and Moto G Google Play edition.
The HTC One (codenamed and retroactively called M7) is a touchscreen-based Android smartphone designed, developed, and manufactured by HTC.

Android KitKat

KitKatAndroid 4.4 "KitKatAndroid 4.4.4 "KitKat
During its announcement of Android KitKat in 2013, Google explained that "Since these devices make our lives so sweet, each Android version is named after a dessert", although a Google spokesperson told CNN in an interview that "It’s kind of like an internal team thing, and we prefer to be a little bit — how should I say — a bit inscrutable in the matter, I’ll say".
Android "KitKat" is a codename for the Android mobile operating system and the eleventh version of Android.

Google Nexus

NexusGoogleNexus 7
In 2010, Google launched its Nexus series of devices, a lineup in which Google partnered with different device manufacturers to produce new devices and introduce new Android versions.
Google Nexus is a line of consumer electronic devices that run the Android operating system.

Android version history

Android 4.4.2 KitkatAndroid 2.3Ice Cream Sandwich
Since 2008, Android has seen numerous updates which have incrementally improved the operating system, adding new features and fixing bugs in previous releases.
The version history of the Android mobile operating system began with the public release of the Android beta on November 5, 2007.

Moto G (1st generation)

Moto GMotorola Moto Goriginal Moto G
The device would become the start of the Google Play edition program, and was followed by other devices, including the HTC One Google Play edition, and Moto G Google Play edition.
The Moto G is an Android smartphone developed and manufactured by Motorola Mobility.

Android One

EvercossAndroid One smartphonesOne
In June 2014, Google announced Android One, a set of "hardware reference models" that would "allow [device makers] to easily create high-quality phones at low costs", designed for consumers in developing countries.
Android One is a series of smartphones that run the unmodified Android operating system.

Pixel (smartphone)

PixelGoogle PixelPixel and Pixel XL
Google introduced the Pixel and Pixel XL smartphones in October 2016, marketed as being the first phones made by Google, and exclusively featured certain software features, such as the Google Assistant, before wider rollout.
Pixel and Pixel XL are Android smartphones designed, developed and marketed by Google.

Gmail

Gmailgmail.comGoogle Mail
Android is also associated with a suite of proprietary software developed by Google, including core apps for services such as Gmail and Google Search, as well as the application store and digital distribution platform Google Play, and associated development platform.
By February 2016, Gmail had one billion active users worldwide, and was the first app on the Google Play Store to hit one billion installations on Android devices.

HTC

HTCHTC CorporationHTC Corportion
On November 5, 2007, the Open Handset Alliance, a consortium of technology companies including Google, device manufacturers such as HTC, Motorola and Samsung, wireless carriers such as Sprint and T-Mobile, and chipset makers such as Qualcomm and Texas Instruments, unveiled itself, with a goal to develop "the first truly open and comprehensive platform for mobile devices".
After initially making smartphones based mostly on Windows Mobile, HTC became a co-founding member of the Open Handset Alliance, a group of handset manufacturers and mobile network operators dedicated to the development of the Android mobile operating system.