(1) (android)  A mechanical device that more or less resembles a human being.  Androids date back to the 7th century where legends of clay and metal statues came to life.  The myriad industrial robots in the world are by no means androids.  They can have any shape, any number of articulating limbs and are by no means anything to cuddle up to.  See 
robot, 
robotoid, 
humanoid robot and 
industrial robot.
(2) An operating system for smartphones and tablets from the Google-sponsored Open Handset Alliance.  With myriad models to choose from, Android is the leading mobile platform worldwide (see 
Android market share).
Android is a Linux OS, and apps are programmed in Java, as well as Kotlin.  Users download applications from Google's Play Store, the Amazon Appstore and other online sources.  See 
Kotlin, 
Google Play and 
Amazon Appstore.
The first Android smartphone debuted in 2008 and quickly became a major competitor to the iPhone due to its availability from multiple carriers and numerous handset manufacturers.  In addition, Androids could multitask, whereas iPhones initially could not.  By 2011, Android outsold every other smartphone.  See 
Android market share.
Like Windows vs. Mac
Like Windows computers, Android hardware is offered by several manufacturers, and they can add their own apps and interface features to their devices (see 
app launcher).
In contrast, like the Mac, the iPhone and iPad are made only by Apple.  There are far fewer current models than Android and all have a standard interface.  See 
iPhone vs. Android, 
how to select a mobile device, 
Open Handset Alliance, 
AOSP, 
Android fragmentation, 
mobile compatibility and 
mobile device vendor control.
The Google Phone
In 2005, Google acquired Android, Inc. and two years later unveiled smartphone specifications for third-party manufacturers.  In 2010, Google began to offer "pure Android" versions, devoid of vendor add-ons (see 
Google Nexus and 
Pixel phone).  When it acquired Motorola Mobility in 2012, Google became a phone manufacturer itself.  However, in less than two years, Google sold the company to Lenovo while retaining numerous patents.  See 
Android camera, 
Android rooting, 
Android laptop, 
Android antivirus program, 
Chromecast, 
Google TV, 
Galaxy S, 
HTC G1 and 
smartphone.
Early Android Smartphones
After T-Mobile introduced the first Android phone in 2008, other carriers and vendors followed, eventually introducing more than a thousand models.  See 
GSM and 
CDMA.
In 2009, the ARCHOS "Internet tablet" (top) and Barnes & Noble e-book reader (bottom) were early tablet-style Androids.  Soon after, myriad Android tablets were introduced.  See 
e-book.  
(Images courtesy of ARCHOS and Barnesandnoble.com)In 2025, this Android phone from China-based Unihertz has a 3" screen and essential hardware, including Wi-Fi, Bluetooth, GPS, fingerprint/facial recognition and even an FM radio.  See 
mini phone.  
(Image courtesy of Unihertz.)