Andriod Technology features and security
Android OS is a Linux-based mobile operating system that primarily runs on smartphones and tablets. Android was developed by the Open Handset Alliance, led by Google. Android offers a unified approach to application development for mobile devices. Developers need only develop for Android, and their applications should be able to run on different devices powered by Android.
The Android operating system was developed by Google for use in all of its tablets and cell phones
This operating system was first developed by Android Inc then it was acquired by Google.
The Android source code is an open-source format to help advance open standards software.
Security at the operating system level through the Linux kernel
Mandatory application sandbox
Secure interprocess communication
Application-defined and user-granted permissions
Android OS features
The default UI of Android relies on direct manipulation inputs tapping, swiping and pinching to initiate actions. The device provides to the user via alerts such as vibrations to respond to actions.
The user boots a device Android OS displays the home screen, which is the primary navigation hub for Android devices and is comprised of widgets and app icons. The home screen display can differ based on the device manufacturer that is running the OS. Users can also choose different themes for the home screen via third-party apps.
The OS suspends applications that aren't in use to conserve battery power and CPU usage. Android includes memory management features that automatically close inactive processes stored in its memory.
Android runs on both of the most widely deployed cellular standards GSM and CDMA
Edge and Bluetooth
3G communication protocols like CDMA AND GSM
SMS and MMs messaging technique
Video/still digital cameras
GPS and Compass
Accelerometers and accelerated 3D Graphics
Android Operation System versions
Google makes incremental changes to the android Operation System with each release. This often includes security patches and performance improvements
Android 1.0 : In this a suite of Google apps, including Gmail, Maps, Calendar and YouTube.
Android 1.5 : In this an onscreen virtual keyboard and the framework for third-party app widgets
Android 1.6 : Into the ability for the OS to run on different screen sizes and resolutions; added support for CDMA
Android 2.0 : This Added turn-by-turn voice navigation, real-time traffic information, pinch-to-zoom capability
Android 3.0 : This release was exclusive to tablets and introduced a blue, space-themed holographic design
Android 4.0 : It Added a unified UI to both tablets and smartphones; emphasized swiping as a navigational method.
Android 5.0 : In this version a card-based appearance in the design with elements such as notifications and Recent Apps list. Introduced hands-free voice control.
Android 10 : this is a abandoned the Back button in favor of a swipe-based approach to navigation. it is a dark theme and Focus Mode, which enables users to limit distractions from certain apps
Android 12 : this version Added customization options for the user interface. The conversation widget let users store preferred contacts on their home screens. Added more privacy options, including sharing when apps access information such as camera, photos or microphone
Android 13 : In this Version Included more customizable options including color, theme, language and music. Security updates control over information apps can access, notification permission required for all apps and clearing of personal information on clipboard. This update enables multitasking by sharing of messages, chats, links and photos across multiple Android devices.
Android Application Security
Android system building and testing the security of Android apps, developers should follow Android security :-
1. Inbound SMS listeners (command and control)
2. Unsafe file creation
3. Improper database storage
4. Unsafe use of shared preferences
5. Storage of sensitive data on mass storage device
6. Content provider SQL injection
7. APN or proxy modification
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