Android is an open source, Linux-based operating system developed by Google. It has several advantages including easily accessible apps on the Google Play Store, ability to multitask, and good notification handling. However, it also has disadvantages such as needing an internet connection, inviting hackers due to open source code, and potential for viruses. Android has gone through several versions from Cupcake to Oreo, with each release focusing on improvements to user experience, security, and new features.

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3. FEATURES OF ANDROID
• Open Source
• Larger Developer
• Increased Marketing
• Reduced Cost of Development
• Higher Success Ratio
• Rich Development Environment
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4. ADVANTAGES OF ANDROID
• Aplications are easily
obtainable on Google Play
Store.
• Android much like most
operating system on
phones allow you to multi
task.
• It is also good as dealing
with notifications.
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5. DISADVANTAGES OF ANDROID
• Need of Internet
Connection.
• Making source code
available invites the
attention of hackers.
• Many applications of
Android contains Virus.
• Consumes more battery.
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7. WHAT IS ANDROID OPERATING SYSTEM?
•It is a Linux-based platform for mobile phones.
•It was released under the Apache v2 open source
license.
•It was developed by Google.
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8. VERSIONS OF ANDROID
OPERATING SYSTEM
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9. ANDROID 1.5 ~ CUPCAKE
• Based on Linux Kernel
2.6.27 the official 1.5 was
released on 30 April ,2009.
• Soft Keyboard.
• Ability to record video.
• Animated screen
transitions.
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10. ANDROID 1.6 - DONUT
• Based on Linux Kernel
2.6.29 ,the official 1.6 was
released on 15 September,
2009.
• Support for WVGA Screen
Resolution.
• Updated CDMA support.
• Multilingual Text-to-speech
function.
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11. ANDROID 2.0 - ECLAIR
• Based on Linux Kernel
2.6.29, the official 2.0 was
released on October 26,
2009.
• Bluetooth 2.1 support.
• Ability to select to call and
SMS.
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12. ANDROID 2.2 -2.2.3 FROYO
• Based on Linux Kernel
2.6.32, the official 2.2 was
released on May 20, 2010.
• Option to disable data
access.
• USB Tethering and Mobile
Hotspot functionality.
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13. ANDROID 2.3-2.3.7
GINGERBREAD
• Based on Linux Kernel
2.6.35, the official 2.3 was
released on December 6,
2010.
• Enhance copy-paste
function.
• Improve Gmail Application.
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14. ANDROID 3.0 - HONEYCOMB
• Connectivity for USB
Accessories.
• Support for external
devices.
• Ability to view albums.
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15. ANDROID 4.0 ICE CREAM
SANDWICH
• Based on Linux Kernel
3.0.1, the officially released
on October 19, 2011.
• Brand new chrome mobile
web browser introduced.
• Improved Camera.
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16. ANDROID 4.3-JELLY
BEAN
• It was released on July 9,
2012.
• Bluetooth data tranfer for
Android Beam.
• Improve Camera
application.
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17. ANDROID 4.4 - KITKAT
• It was released on
September 3, 2013.
• UI updates for Google
Map, navigation and alarm.
• Offline music play support.
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18. ANDROID 5.0-5.0.2
LOLLIPOP
• It was released on
November 12, 2014.
• Improvements to the
notification priority system.
• Without owner permisssion
the device is not open.
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19. ANDROID 6.0
MARSHMALLOW
• It was officially released on
October 2015.
• It primarily focuses on
improving the overall user
experience.
• It enables additional
security features.
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20. ANDROID 7.0 - NOUGAT
• It was released on August
22, 2016.
• Multi-window.
• Notification sheets.
• Switch apps by double
tapping in overview button.
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21. ANDROID 8.0 - OREO
• Improved battery.
• Picture in picture support.
• Android Instant apps.
• Updated Security features.
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22. ANDROID V/S IOS
• Android
• It was developed by
Google.
• It is available in Google
Play Store.
• It was released on
September 23, 2008.
• It is open source.
• IOS
• It was developed by Apple
• It is available in Apple
Store.
• It was released on July 29,
2007.
• It is closed.
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