Android and android phones


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  • Connectivity like GSM/EDGE, IDEN, CDMA, EVDO, UMTS, Bluetooth, WI-fi and more- this clearly epics how this android works greater for all type of devices
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Android and android phones

  1. 1. Android is a Linux-based operating system for mobile devices such as smartphoness and tablet computers, developed by Google in conjunction with the Open Handset Alliance. was initially developed by Android Inc, whom Google financially backed and later purchased in 2005.
  2. 2.  Android has a large community of developers writing applications that extend the functionality of the devices. Developers write primarily in a customized version of Java, and apps can be downloaded from online stores such as Google Play, the app store run by Google, or third-party sites. In June 2012, there were more than 600,000 apps available for Android, and the estimated number of applications downloaded from Google Play was 20 billion. Android became the world’s leading smartphone platform at the end of 2010. For the first quarter of 2012, Android had a 59% smartphone market share worldwide. As of third quarter 2012, there were 480 million devices activated and 1.3 million activations per day.
  3. 3. Android, Inc. was founded in Palo Alto, California, United States in October 2003 by Andy Rubin, Rich Miner, the co-founder of Wildfire Communications, Inc. Nick Sears, once VP at T-Mobile, and Chris White who headed design and interface development at WebTV.. to develop, in Rubins words "...smarter mobile devices that are more aware of its owners location and preferences". Despite the obvious past accomplishments of the founders and early employees, Android Inc. operated secretly, revealing only that it was working on software for mobile phones. That same year, Rubin ran out of money. Steve Perlman, a close friend of Rubin, brought him $10,000 in cash in an envelope and refused a stake in the company.
  4. 4. Design Android consists of a kernel based on the Linux kernel 2.6 and Linux Kernel 3.x, with middleware, libraries andAPIs written in C and application software running on an application framework which includes Java- compatible libraries based on Apache Harmony. Android uses the Dalvik virtual machine with just-in-time compilation to run Dalvik dex-code, which is usually translated from Java bytecode.
  5. 5.  The main hardware platform for Android is the ARM architecture. There is support for x86 from the Android x86 project, and Google TV uses a special x86 version of Android.
  6. 6. LinuxAndroids kernel is based on the Linux kernel and has further architecture changes by Google outside the typical Linux kernel development cycle. Android does not have a native X Window System by default nor does it support the full set of standard GNU libraries, and this makes it difficult to port existing Linux applications or libraries to Android.
  7. 7. Linux included the autosleep and wakelocks capablities in the 3.5 kernel, after many previous attempts at merger. The interfaces are the same but the upstream Linux implementation allows for two different suspend modes: to memory, and to disk. In August 2011, Linus Torvalds said that "eventually Android and Linux would come back to a common kernel, but it will probably not be for four to five years.“
  8. 8. Features
  9. 9. Handset layoutsThe platform is adaptable to larger, VGA, 2D graphics library, 3D graphics library based on OpenGL ES 2.0 specifications, and traditional smartphone layouts.
  10. 10. StorageSQLite, a lightweight relational database, is used for data storage purposes.
  11. 11. ConnectivityAndroid supports connectivity technologies including GSM/EDGE, IDEN, CDMA, EV- DO, UMTS, Bluetooth, Wi-Fi, LTE, NFC and WiMAX.
  12. 12. MessagingSMS and MMS are available forms of messaging, including threaded text messaging and Android Cloud To Device Messaging and now enhanced version of C2DM, Android Google Cloud Messaging is also a part of Android Push Messaging service.
  13. 13. Multiple language supportAndroid supports multiple languages.
  14. 14. Web browserThe web browser available in Android is based on the open-source WebKit layout engine, coupled with Chromes V8 JavaScript engine. The browser scores 100/100 on the Acid3 test on Android 4.0.
  15. 15. Multi-touchAndroid has native support for multi-touch which was initially made available in handsets such as the HTC Hero. The feature was originally disabled at the kernel level.Google has since released an update for the Nexus One and the Motorola Droid which enables multi-touch natively.
  16. 16. BluetoothSupports A2DP, AVRCP, sending files, accessing the phone book, voice dialing and sending contacts between phones. Keyboard, mouse and joystick support is available in Android 3.1+, and in earlier versions through manufacturer customizations and third-party applications.
  17. 17. Video callingAndroid does not support native video calling, but some handsets have a customized version of the operating system that supports it, either via the UMTS network or over IP. Video calling through Google Talk is available in Android 2.3.4 and later. Gingerbread allows Nexus S to place Internet calls with a SIP account. This allows for enhanced VoIP dialing to other SIP accounts and even phone numbers. Skype 2.1 offers video calling in Android 2.3, including front camera support.
  18. 18. Screen captureAndroid supports capturing a screenshot by pressing the power and volume-down buttons at the same time. Prior to Android 4.0, the only methods of capturing a screenshot were through manufacturer and third-party customizations or otherwise by using a PC connection. These alternative methods are still available with the latest Android.