Android is an open source, Linux-based operating system developed by Google. It has seen many versions released since 2008 that have added new features and functionality while improving performance and security. Some key versions include Android 1.5 Cupcake, 2.0 Eclair, 2.2 Froyo, 2.3 Gingerbread, 4.0 Ice Cream Sandwich, 4.4 KitKat, 5.0 Lollipop, 6.0 Marshmallow, 7.0 Nougat, and 8.0 Oreo. The latest versions focus on enhancing the user experience, battery life, and security. Android is available through the Google Play store and has an open development environment, while iOS is proprietary to Apple

2. FEATURES OF ANDROID
• Open Source
• Larger Developer
• Increased Marketing
• Reduced Cost of Development
• Higher Success Ratio
• Rich Development Environment

3. 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.

4. 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.

6. 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.

7. VERSIONS OF ANDROID OPERATING
SYSTEM

8. 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.

9. 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.

10. 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.

11. 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.

12. 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.

13. ANDROID 3.0 - HONEYCOMB
• Connectivity for USB Accessories.
• Support for external devices.
• Ability to view albums

14. 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.

15. ANDROID 4.3-JELLY
BEAN
• It was released on July 9, 2012.
• Bluetooth data transfer for Android Beam.
• Improve Camera application.

16. ANDROID 4.4 - KITKAT
• It was released on September 3, 2013.
• UI updates for Google Map, navigation and
alarm.
• Offline music play support

17. ANDROID 5.0-5.0.2
LOLLIPOP
 It was released on November 12, 2014.
 Improvements to the notification priority
system.
• Without owner permission the device is not
open.

18. 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

19. ANDROID 7.0 - NOUGAT
• It was released on August 22, 2016.
• Multi-window.
• Notification sheets.
• Switch apps by double tapping in overview
button.

20. ANDROID 8.0 - OREO
• Improved battery.
• Picture in picture support.
• Android Instant apps.
• Updated Security features.

21. 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.