About Android

Android (operating system)




Company / developer


Open Handset Alliance
Android Open Source Project (AOSP)

Programmed in

C (core), C++, Java (UI)

OS family

Unix-like

Working state

Current

Source model

Open-source (with proprietary drivers)

Initial release

September 23, 2008

Latest stable release

4.3 Jelly Bean / August 23, 2013; 54 days ago

Marketing target

Smartphones
Tablet computers

Available language(s)

Multi-lingual (46 languages)

Package manager

Google Play, APK

Supported platforms

ARM, MIPS, x86

Kernel type

Monolithic (modified Linux kernel)

Userland

Bionic libc, shell from NetBSD, native core utilities with a few from NetBSD

Default user interface

Graphical (Multi-touch)

License

Apache License 2.0
Linux kernel patches under GNU GPL v2

Official website

www.android.com

Android is a Linux-based operating scheme designed mainly for touchscreen wireless apparatus such as smartphones and tablet computers. primarily developed by Android, Inc., which Google backed financially and subsequent bought in 2005, Android was revealed in 2007 along with the founding of the Open Handset coalition: a consortium of hardware, software, and telecommunication companies dedicated to advancing open measures for wireless apparatus. The first Android-powered teletelephone was traded in October 2008.
Android is open source and Google releases the code under the Apache License. This open-source code and permissive licensing allows the programs to be without coercion modified and circulated by device manufacturers, wireless carriers and enthusiast developers. Additionally, Android has a large community of developers writing submissions ("apps") that continue the functionality of apparatus, in writing primarily in a customized type of the Java programming language. In October 2012, there were approximately 700,000 apps accessible for Android, and the approximated number of submissions downloaded from Google Play, Android's prime app shop, was 25 billion. A developer review undertook in April–May 2013 found that Android is the most well liked platform for developers, used by 71% of the mobile developer community.
These components have contributed in the direction of making Android the world's most widely utilised smartphone stage, overtaking Symbian in the fourth quarter of 2010, and the programs of alternative for technology companies who need a low-cost, customizable, lightweight functioning scheme for high tech devices without developing one from scratch. As a outcome, regardless of being primarily conceived for phones and tablets, it has seen added applications on televisions, sport consoles, digital cameras and other electronics. Android's open environment has further boosted a large community of developers and enthusiasts to use the open-source code as a foundation for community-driven tasks, which add new features for sophisticated users or convey Android to devices which were formally released running other functioning schemes.
Android's share of the global smartphone market, led by Samsung goods, was 64% in stride 2013. In July 2013 there were 11,868 forms of Android apparatus, tallies of computer display sizes and eight OS versions simultaneously in use. The functioning system's achievement has made it a target for patent litigation as part of the so-called "smartphone wars" between technology businesses. As of May 2013, 48 billion apps have been installed from the Google Play shop, and as of September 3, 2013, 1 billion Android devices have been activated.


 


History


 


Android, Inc. was founded in Palo Alto, California in October 2003 by Andy Rubin (co-founder of Danger), Rich Miner (co-founder of Wildfire Communications, Inc.), Nick Sears (once VP at T-Mobile), and Chris White (headed conceive and interface development at WebTV) to evolve, in Rubin's phrases "smarter mobile devices that are more cognizant of its owner's position and preferences". The early intentions of the business were to evolve an advanced operating scheme for digital cameras, when it was appreciated that the market for the apparatus was not large enough, and diverted their efforts to producing a smartphone functioning system to rival those of Symbian and Windows wireless (Apple's iPhone had not been issued at the time). Despite the past accomplishments of the founders and early employees, Android Inc. functioned secretly, revealing only that it was employed on programs for mobile phones. That identical year, Rubin ran out of money. Steve Perlman, a close friend of Rubin, conveyed him $10,000 in cash in an wrapper and denied a stake in the company.
Google came by Android Inc. on August 17, 2005, making it a wholly belongs to subsidiary of Google. Key employees of Android Inc., encompassing Rubin, Miner and White, resided at the company after the acquisition. Not much was renowned about Android Inc. at the time, but many presumed that Google was planning to go in the wireless teletelephone market with this move. At Google, the group directed by Rubin evolved a wireless device stage powered by the Linux kernel. Google sold the stage to handset manufacturers and carriers on the pledge of providing a flexible, upgradable scheme. Google had lined up a series of hardware constituent and programs partners and indicated to carriers that it was open to various degrees of collaboration on their part.
conjecture about Google's aim to go in the mobile communications market continued to construct through December 2006. Reports from the BBC and the partition road periodical noted that Google wanted its seek and applications on wireless telephones and it was employed hard to deliver that. publish and online media outlets shortly reported rumors that Google was evolving a Google-branded handset. Some speculated that as Google was characterising technical specifications, it was displaying prototypes to cell phone manufacturers and network operators. In September 2007, InformationWeek covered an Evalueserve study reporting that Google had filed some patent submissions in the area of wireless telephony.
On November 5, 2007, the Open Handset coalition, a consortium of technology businesses including Google, apparatus manufacturers such as HTC, Sony and Samsung, wireless carriers such as Sprint Nextel and T-Mobile, and chipset manufacturers such as Qualcomm and Texas devices, revealed itself, with a goal to develop open measures for wireless apparatus. That day, Android was unveiled as its first merchandise, a wireless apparatus platform built on the Linux kernel type 2.6. The first commercially available phone to run Android was the HTC illusion, issued on October 22, 2008.
In 2010, Google commenced its Nexus sequence of devices—a line of smartphones and tablets running the Android operating scheme, and built by a constructor colleague. HTC cooperated with Google to release the first Nexus smartphone, the Nexus One. The sequence has since been revised with newer apparatus, such as the Nexus 4 telephone and Nexus 10 tablet, made by LG and Samsung respectively. Google releases the Nexus phones and tablets to proceed as their flagship Android apparatus, demonstrating Android's newest software and hardware features. On March 13, 2013, it was announced by Larry sheet in a blog post that Andy Rubin had moved from the Android partition to take on new projects at Google. He was restored by Sundar Pichai, who furthermore extends his role as the head of Google's Chrome partition, which evolves Chrome OS.
Since 2008, Android has glimpsed numerous revisions which have incrementally advanced the operating system, supplementing new features and repairing bugs in previous releases. Each major release is entitled in in alphabetical order alignment after a dessert or sugary heal; for example, type 1.5 Cupcake was pursued by 1.6 Donut. The latest released type is 4.3 Jelly Bean; however, version 4.4 KitKat was broadcast on September 3, 2013.


 


Description


Interface


 


Android's user interface is founded on direct manipulation, utilising touch inputs that roughly correspond to real-world activities, like swiping, tapping, pinching and reverse pinching to manipulate on-screen objects. The response to user input is conceived to be immediate and provides a fluid touch interface, often utilising the vibration capabilities of the apparatus to supply haptic repsonse to the user. Internal hardware such as accelerometers, gyroscopes and proximity sensors are used by some applications to respond to added user activities, for demonstration modifying the computer display from portrait to landscape counting on how the apparatus is oriented, or permitting the client to steer a vehicle in a rushing game by rotating the apparatus, simulating control of a guiding wheel.
Android apparatus boot to the homescreen, the prime navigation and data issue on the apparatus, which is alike to the desktop discovered on PCs. Android homescreens are normally made up of app icons and widgets; app icons launch the affiliated app, whereas widgets brandish reside, auto-updating content such as the climate outlook, the user's internet message inbox, or a report ticker directly on the homescreen. A homescreen may be made up of some pages that the user can swipe back and forward between, though Android's homescreen interface is very strongly customisable, allowing the user to adapt the gaze and feel of the device to their flavours. Third party apps accessible on Google Play and other app shops can extensively re-theme the homescreen, and even mimic the gaze of other functioning schemes, such as Windows Phone. Most manufacturers, and some wireless carriers, customise the gaze and seem of their Android devices to differentiate themselves from their competitors.
Present along the top of the computer display is a rank bar, displaying information about the apparatus and its connectivity. This status bar can be dragged" down to reveal a notification computer brandish where apps brandish significant data or revisions, such as a freshly obtained email or SMS text, in a way that does not directly cut off or inconvenience the user. In early versions of Android these notifications could be tapped to open the applicable app, but recent revisions have provided enhanced functionality, such as the proficiency to call a number back exactly from the missed call notification without having to open the dialer app first. Notifications are continual until read or dismissed by the user.


 


Applications


 


Android has a growing assortment of third party applications, which can be acquired by users either through an app store such as Google Play or the Amazon Appstore, or by downloading and establishing the application's APK document from a third-party site. The Play shop application permits users to browse, download and revise apps released by Google and third-party developers, and is pre-installed on devices that obey with Google's compatibility requirements. The app filters the register of available submissions to those that are compatible with the user's device, and developers may restrict their applications to specific carriers or countries for business reasons. buys of unwanted submissions can be refunded inside 15 minutes of the time of download, and some carriers offer direct carrier billing for Google Play submission purchases, where the cost of the submission is supplemented to the user's monthly account. As of September 2012, there were more than 675,000 apps accessible for Android, and the approximated number of applications downloaded from the Play shop was 25 billion.
submissions are evolved in the Java language using the Android software development kit (SDK). The SDK includes a comprehensive set of development devices, including a debugger, programs libraries, a handset emulator based on QEMU, documentation, experiment cipher, and tutorials. The formally supported integrated development natural natural environment (IDE) is Eclipse utilising the Android Development devices (ADT) plugin. Other development tools are accessible, including a Native Development Kit for applications or additions in C or C++, Google App Inventor, a visual environment for novice programmers, and various traverse stage mobile world wide world wide web submissions structures.
In alignment to work round limitations on coming to Google services due to Internet censorship in the People's Republic of ceramic, Android apparatus sold in the PRC are usually customized to use state approved services instead.


Development


 


Android is developed in personal by Google until the latest alterations and revisions are prepared to be issued, at which point the source cipher is made available publicly. This source cipher will only run without modification on choose apparatus, usually the Nexus sequence of devices. With other ones, there are proprietary binaries which have to be supplied by the constructor in order for Android to work. The green Android logo was designed for Google in 2007 by graphic designer Irina Blok. The conceive group was tasked with a project to create a unanimously identifiable icon with the exact addition of a robot in the last design. After many design expansion based on science-fiction and space videos, the team eventually searched inspiration from the human emblem on lavatory signs and modified the number into a robot shape. As Android is open-sourced, it was agreed that the logo should be likewise, and since its launch the green logo has been reinterpreted into countless variations on the initial design.


 


Linux


 


Android comprises of a kernel founded on Linux kernel version 3.x (version 2.6 former to Android 4.0 Ice Cream Sandwich), with middleware, libraries and APIs in writing in C, and application software running on an submission structure which includes Java-compatible libraries founded on Apache Harmony. Android uses the Dalvik virtual machine with just-in-time compilation to run Dalvik 'dex-code' (Dalvik Executable), which is generally converted from Java bytecode. The main hardware platform for Android is the ARM architecture. There is support for x86 from the Android-x86 task, and Google TV benefits a exceptional x86 version of Android. In 2013, Freescale announced Android on its i.MX processor, i.MX5X and i.MX6X sequence. In 2012 Intel processors started to emerge on more mainstream Android platforms, such as phones.
Android's Linux kernel has further architecture changes by Google outside the usual Linux kernel development cycle. Android does not have a native X Window scheme by default neither does it support the full set of benchmark GNU libraries, and this makes it difficult to port living Linux applications or libraries to Android. Support for simple C and SDL applications is likely by injection of a little Java shim and usage of the JNI like, for demonstration, in the Jagged coalition 2 dock for Android.
Certain characteristics that Google contributed back to the Linux kernel, especially a power management feature called "wakelocks", were turned down by mainline kernel developers partially because they felt that Google did not display any intent to sustain its own code. Google broadcast in April 2010 that they would charter two employees to work with the Linux kernel community, but Greg Kroah-Hartman, the present Linux kernel maintainer for the steady agency, said in December 2010 that he was concerned that Google was no longer trying to get their cipher changes included in mainstream Linux. Some Google Android developers hinted that "the Android group was getting fed up with the process," because they were a small group and had more pressing work to do on Android.
In August 2011, Linus Torvalds said that "eventually Android and Linux would arrive back to a widespread kernel, but it will probably not be for four to five years". In December 2011, Greg Kroah-Hartman broadcast the start of the Android Mainlining Project, which aims to put some Android drivers, patches and characteristics back into the Linux kernel, beginning in Linux 3.3. Linux encompassed the autosleep and wakelocks capabilities in the 3.5 kernel, after numerous previous attempts at amalgamation. The interfaces are the identical but the upstream Linux implementation permits for two distinct hover modes: to memory (the customary hover that Android uses), and to disk (hibernate, as it is known on the desktop). Google sustains a public cipher repository that comprises their untested work to re-base Android off the latest steady Linux versions.
The blink storage on Android apparatus is divide into several partitions, such as "/system" for the operating scheme itself and "/facts and figures" for client facts and figures and app installations. In contrast to desktop Linux distributions, Android device proprietors are not given root get access to to the functioning scheme and sensitive partitions such as /system are read-only. However, origin get access to can be got by exploiting security flaws in Android, which is used often by the open-source community to enhance the capabilities of their devices, but also by malicious parties to install viruses and malware.
Whether or not Android enumerations as a Linux circulation is a broadly argued theme, with the Linux base and Chris DiBona, Google's open-source chief, in favour. Others, such as Google technician Patrick Brady contradict, noting the lack of support for numerous GNU devices, encompassing glibc, in Android.


 


Memory management


 


Since Android devices are generally battery-powered, Android is conceived to manage recollection (RAM) to hold power utilisation at a minimum, in compare to desktop operating systems which generally assume they are attached to unlimited mains electrical energy. When an Android app is no longer in use, the scheme will mechanically suspend it in recollection – while the app is still technically "open," suspended apps consume no assets (e.g. electric battery power or processing power) and sit idly in the backdrop until needed afresh. This has the dual benefit of expanding the general responsiveness of Android apparatus, since apps don't need to be closed and reopened from rub each time, but furthermore ensuring backdrop apps don't waste power needlessly.
Android manages the apps stored in recollection mechanically: when recollection is reduced, the system will begin murdering apps and methods that have been inactive for a while, in turn around order since they were last used (i.e. oldest first). This process is conceived to be unseen to the client, such that users do not need to manage recollection or the murdering of apps themselves. However, disarray over Android memory administration has resulted in third-party task murderers evolving well liked on the Google Play shop; these third-party task murderers are usually considered as doing more damage than good.


 


Update schedule


 


Google provides foremost revisions, incremental in environment, to Android every six to nine months, which most devices are capable of obtaining over the air. The newest foremost revise is Android 4.3 Jelly Bean.
contrasted to its head rival mobile operating system, namely iOS, Android revisions are normally slow to reach genuine apparatus. For apparatus not under the Nexus brand, updates often reach months from the time the granted type is formally issued. This is caused partly due to the extensive variety in hardware of Android devices, to which each update must be expressly tailored, as the official Google source code only runs on their flagship Nexus apparatus. Porting Android to specific hardware is a time- and resource-consuming method for device manufacturers, who prioritize their newest apparatus and often leave older ones behind. therefore, older smartphones are often not revised if the manufacturer concludes it is not worth their time, regardless of if the phone is adept of running the update. This problem is aggregated when manufacturers customize Android with their own interface and apps, which should be reapplied to each new issue. added delays can be presented by wireless carriers who, after obtaining updates from manufacturers, farther customize and brand Android to their needs and perform comprehensive testing on their networks before dispatching the revise out to users.
The lack of after-sale support from manufacturers and carriers has been widely admonished by consumer assemblies and the expertise newspapers. Some commentators have noted that the commerce has a economic inducement not to revise their apparatus, as the need of revises for existing apparatus fuels the buy of newer ones, an attitude recounted as "insulting". The Guardian has deplored that the complicated method of circulation for updates is only perplexing because manufacturers and carriers have designed it that way. In 2011, Google partnered with a number of commerce players to announce an "Android Update Alliance", pledging to consign timely revisions for every device for 18 months after its issue. As of 2013, this alliance has not ever been cited since.
To battle this, Google started updating numerous of its services, encompassing Google Maps and Google Play melodies independently of Android itself through Google Play Services, a system-level constituent supplying APIs for Google services, which is established automatically and updated exactly by Google, and supports almost all devices running version 2.2 and higher.


 


Open-source community


 


Android has an active community of developers and enthusiasts who use the Android source cipher to develop and circulate their own changed versions of the functioning scheme. These community-developed releases often convey new characteristics and updates to devices much quicker than through the official manufacturer/carrier passages, albeit without as comprehensive testing or quality assurance; provide proceeded support for older apparatus that no longer obtain authorized revisions; or convey Android to devices that were formally released running other functioning systems, such as the HP TouchPad. Community issues often arrive pre-rooted and contain modifications unsuitable for non-technical users, such as the ability to overclock or over/undervolt the device's processor. CyanogenMod is the most broadly used community firmware, and acts as a foundation for numerous other ones.
historic, apparatus manufacturers and wireless carriers have normally been unsupportive of third-party firmware development. Manufacturers articulate anxiety about improper functioning of apparatus running unofficial programs and the support costs resulting from this. furthermore, changed firmwares such as CyanogenMod sometimes offer features, such as tethering, for which carriers would otherwise charge a premium. As a outcome, mechanical obstacles encompassing locked bootloaders and constrained get get access to to to origin permissions are widespread in many apparatus. although, as community-developed programs has developed more popular, and following a declaration by the Librarian of assembly in the joined States that allows the "jailbreaking" of wireless devices, manufacturers and carriers have softened their place regarding third party development, with some, encompassing HTC, Motorola, Samsung and Sony, providing support and encouraging development. As a result of this, over time the need to circumvent hardware limits to establish unofficial firmware has lessened as an expanding number of apparatus are transported with unlocked or unlockable bootloaders, alike to the Nexus sequence of phones, whereas generally needing that users waive their devices' warranties to do so. although, regardless of constructor acceptance, some carriers in the US still require that teleteletelephones are locked down.
The unlocking and "hackability" of smartphones and tablets remains a source of tension between the community and commerce, with the community contending that unofficial development is progressively important given the malfunction of commerce to supply timely revisions and/or continued support to their devices.


 


Security and privacy


 


Android submissions run in a sandbox, an isolated area of the system that does not have get get get access to to to to the rest of the system's resources, except get get access to to permissions are specifically granted by the client when the submission is established. Before installing an submission, the Play Store exhibitions all required permissions: a game may need to endow vibration or save data to an SD business business card, for demonstration, but should not need to read SMS messages or access the phonebook. After reconsidering these permissions, the user can select to accept or refuse them, establishing the submission only if they accept. The sandboxing and permissions system reduces the influence of vulnerabilities and bugs in submissions, but developer disarray and restricted documentation has resulted in submissions regularly demanding unnecessary permissions, decreasing its effectiveness. some security firms, such as Lookout wireless Security, AVG Technologies, and McAfee, have issued antivirus programs for Android apparatus. This programs is ineffective as sandboxing furthermore concerns to such submissions, limiting their ability to scan the deeper scheme for threats.
study from security company tendency Micro lists premium service misuse as the most widespread kind of Android malware, where text messages are dispatched from infected telephones to premium-rate phone figures without the permission or even knowledge of the client. Other malware displays redundant and intrusive adverts on the apparatus, or sends personal data to unauthorised third parties. Security risks on Android are reportedly growing exponentially; although, Google engineers have argued that the malware and virus threat on Android is being overstated by security companies for financial causes, and have suspect the security commerce of playing on doubts to deal virus defence software to users. Google sustains that dangerous malware is really extremely uncommon, and a review undertook by F-Secure displayed that only 0.5% of Android malware described had arrive from the Google Play shop.
Google actually benefits their Google Bouncer malware scanner to watch over and scan the Google Play shop apps. It is proposed to flag up doubtful apps and warn users of any promise matters with an submission before they download it. Android type 4.2 Jelly Bean was issued in 2012 with enhanced security characteristics, encompassing a malware scanner built into the scheme, which works in blend with Google Play but can scan apps established from third party causes as well, and an attentive system which notifies the client when an app endeavours to drive a premium-rate text note, blocking the note except the client specifically authorises it.
Android smartphones have the ability to report the position of Wi-Fi access points, came across as teleteletelephone users move round, to construct databases encompassing the personal locations of hundreds of millions of such get get access to to points. These databases pattern electronic charts to find smartphones, permitting them to run apps like Foursquare, Google Latitude, Facebook locations, and to deliver location-based ads. Third party supervising software such as TaintDroid, an learned research-funded project, can, in some cases, notice when individual data is being dispatched from applications to remote servers. In August 2013, Google issued the Android apparatus Manager, a component that permits users to remotely track, locate, and swab their Android apparatus through an online interface. As it is implemented through Google Play Services rather than of inside Android itself, it is available to most Android devices with type 2.2 and higher.
The open-source environment of Android allows security contractors to take living apparatus and acclimatize them for highly protected benefits. For example Samsung has worked with General Dynamics through their Open Kernel Labs acquisition to rebuild Jelly Bean on peak of their hardened microvisor for the "Knox" task.
As part of the broader 2013 mass surveillance revelations it was revealed in September 2013 that the American and British understanding bureaus, the NSA and Government Communications Headquarters (GCHQ) respectively, have get access to to the client facts and figures in iPhones, Blackberries, and Android teletelephones. They are able to read almost all smartphone data, encompassing SMS, position, emails, and notes.


 


Licensing


 


The source cipher for Android is accessible under free and open-source programs permits. Google publishes most of the cipher (including network and telephony stacks) under the Apache permit type 2.0, and the rest, Linux kernel alterations, under the GNU General Public License type 2. The Open Handset coalition evolves the alterations to the Linux kernel, in public, with source code publicly available at all times. The rest of Android is evolved in private by Google, with source code released publicly when a new type is released. normally Google collaborates with a hardware constructor to produce a 'flagship' apparatus (part of the Google Nexus sequence) featuring the new version of Android, then makes the source cipher accessible after that apparatus has been issued.
In early 2011, Google chose to for the time being withhold the Android source code to the tablet-only 3.0 Honeycomb release. The reason, according to Andy Rubin in an authorized Android blog mail, was because Honeycomb was hurried for production of the Motorola Xoom, and they did not want third parties conceiving a "really bad user know-how" by trying to put up on smartphones a version of Android proposed for tablets. The source cipher was one time afresh made available in November 2011 with the issue of Android 4.0.
Even though the software is open-source, apparatus manufacturers will not use Google's Android trademark unless Google certifies that the apparatus complies with their Compatibility Definition article (CDD). Devices should furthermore rendezvous this delineation to be suitable to permit Google's closed-source submissions, encompassing Google Play. Richard Stallman and the Free programs base have been critical of Android and have recommended the usage of options such as Replicant, because drivers and firmware vital for the correct functioning of Android devices are generally proprietary, and because Google Play permits non-free software.


 


Reception


 


Android obtained a lukewarm reaction when it was revealed in 2007. Although analysts were influenced with the highly regarded expertise companies that had partnered with Google to form the Open Handset coalition, it was unclear if wireless telephone manufacturers would be willing to restore their living functioning schemes with Android. The concept of an open-source, Linux-based development platform sparked interest, but there were additional is concerned about Android opposite powerful affray from established players in the smartphone market, such as Nokia and Microsoft, and competitor Linux wireless operating schemes that were in development. These established players were skeptical: Nokia was cited as saying "we don't see this as a threat," and a constituent of Microsoft's Windows wireless team stated "I don't understand the influence that they are going to have."
Since then Android has developed to become the most broadly utilised smartphone functioning scheme and "one of the fastest wireless familiarity available." Reviewers have highlighted the open-source environment of the operating system as one of its characterising strengths, permitting businesses such as Amazon (Kindle Fire), Barnes & Noble (Nook), Ouya, Baidu, and other ones to branch the programs and issue hardware running their own customised type of Android. As a outcome, it has been recounted by technology website Ars Technica as "practically the default functioning scheme for commencing new hardware" for companies without their own mobile platforms. This openness and flexibility is also present at the grade of the end client: Android allows comprehensive customisation of apparatus by their owners and apps are freely accessible from non-Google app shops and third party websites. These have been cited as amidst the major benefits of Android telephones over other ones.
regardless of Android's popularity, including an activation rate three times that of iOS, there have been reports that Google has not been able to leverage their other products and web services effectively to turn Android into the cash manufacturer that analysts had expected. The Verge suggested that Google is mislaying command of Android due to the extensive customization and expansion of non-Google apps and services – for example the Amazon Kindle Fire points users to the Amazon app store that competes exactly with the Google Play store. Google SVP Andy Rubin, who was restored as head of the Android partition in stride 2013, has been accused for falling short to set up a lucrative partnership with cell telephone makers. The chief beneficiary of Android has been Samsung, whose Galaxy emblem has surpassed that of Android in periods of emblem acknowledgement since 2011. Meanwhile other Android manufacturers have laboured since 2011, such as LG, HTC, and Google's own Motorola Mobility (whose joint venture with Verizon Wireless to push the "DROID" brand has faded since 2010). Ironically, while Google directly earns nothing from the sale of each Android apparatus, Microsoft and Apple have effectively sued to extract patent royalty payments from Android handset manufacturers.


 


Tablets


 


Despite its success on smartphones, primarily Android tablet adoption was slow. One of the major determinants was the chicken or the egg situation where buyers were uncertain to purchase an Android tablet due to a need of high value tablet apps, but developers were uncertain to spend time and resources evolving tablet apps until there was a significant market for them. The content and app "ecosystem" proved more important than hardware specs as the selling issue for tablets. Due to the lack of Android tablet-specific apps in 2011, early Android tablets had to make do with living smartphone apps that were ill-suited to larger computer display dimensions, while the dominance of Apple's iPad was strengthened by the large number of tablet-specific iOS apps.
regardless of app support in its infancy, a considerable number of Android tablets (alongside those utilising other functioning systems, such as the HP TouchPad and BlackBerry PlayBook) were rushed out to market in an attempt to capitalize on the achievement of the iPad. InfoWorld has proposed that some Android manufacturers initially treated their first tablets as a "Frankenphone business", a short-term low-investment opening by putting a smartphone-optimized Android OS (before Android 3.0 Honeycomb for tablets was accessible) on a device while neglecting client interface. This approach, such as with the Dell mark, failed to gain market traction with consumers as well as impairing the early status of Android tablets. Furthermore, some Android tablets such as the Motorola Xoom were charge the same or higher than the iPad, which hurt sales. An exclusion was the Amazon Kindle blaze, which relied upon lower pricing as well as get access to to Amazon's ecosystem of apps and content.
This started to change in 2012 with the issue of the inexpensive Nexus 7 and a push by Google for developers to compose better tablet apps. Android tablet market share surpassed the iPad's in Q3 2012.


 


Market share and rate of adoption


 


Research business Canalys approximated in the second quarter of 2009 that Android had a 2.8% share of worldwide smartphone shipments. By the fourth quarter of 2010 this had developed to 33% of the market, evolving the top-selling smartphone platform. By the third quarter of 2011 Gartner approximated that more than half (52.5%) of the smartphone market belongs to Android. By the third quarter of 2012 Android had a 75% share of the global smartphone market according to the study firm IDC.
In July 2011, Google said that 550,000 new Android apparatus were being triggered every day, up from 400,000 per day in May, and more than 100 million devices had been activated with 4.4% development per week. In September 2012, 500 million devices had been triggered with 1.3 million activations per day. In May 2013, at Google I/O, Sundar Pichai broadcast that 900 million Android apparatus had been activated.
Android market share varies by location. In July 2012, Android's market share in the joined States was 52%, and rose to 90% in China. throughout the third quarter of 2012, Android's worldwide smartphone market share was 75%, with 750 million devices triggered in total and 1.5 million activations per day.
As of March 2013, Android's share of the global smartphone market, commanded by Samsung products, was 64%. The Kantar market research business reported that Google’s stage accounted for over 70% of all smartphone apparatus sales in ceramic during this time span and that Samsung's commitment rate in Britain (59%) is second to that of apple fruit (79%).


Application piracy


There has been some anxiety about the ease with which paid Android apps can be pirated. In a May 2012 interview with Eurogamer, the developers of Football Manager asserted that the ratio of pirated players vs legitimate players was 9:1 for their game Football supervisor Handheld. However, not every developer agreed that piracy rates were an issue; for demonstration, in July 2012 the developers of the game Wind-up Knight said that piracy grades of their game were only 12%, and most of the piracy came from China, where persons cannot buy apps from Google Play.
In 2010, Google released a device for validating authorized buys for use inside apps, but developers deplored that this was insufficient and trivial to crack. Google answered that the device, particularly its primary release, was proposed as a sample structure for developers to modify and construct upon counting on their desires, not as a finished piracy answer. In 2012 Google issued a characteristic in Android 4.1 that encrypted paid applications so that they would only work on the device on which they were bought, but this characteristic has been temporarily deactivated due to mechanical issues.
lawful issues
Both Android and Android telephone manufacturers have been involved in many patent lawsuits. On August 12, 2010, Oracle sued Google over asserted infringement of copyrights and patents related to the Java programming dialect. Oracle originally sought damages up to $6.1 billion, but this valuation was rejected by a United States federal referee who inquired Oracle to revise the estimate. In answer, Google submitted multiple lines of protecting against, counterclaiming that Android did not infringe on Oracle's patents or copyright, that Oracle's patents were invalid, and some other defenses. They said that Android is founded on Apache Harmony, a clean room implementation of the Java class libraries, and an individually developed virtual appliance called Dalvik. In May 2012, the jury in this case found that Google did not infringe on Oracle's patents, and the test judge directed that the structure of the Java APIs utilised by Google was not copyrightable.
In supplement to lawsuits against Google exactly, diverse proxy wars have been conducted against Android obscurely by aiming at manufacturers of Android devices, with the effect of disappointing manufacturers from taking up the stage by expanding the charges of conveying an Android device to market. Both apple fruit and Microsoft have sued some manufacturers for patent infringement, with Apple's ongoing legal activity against Samsung being a especially high-profile case. In October 2011, Microsoft said they had marked patent permit affirmations with ten Android device manufacturers, whose products account for 55% of the worldwide revenue for Android devices. These encompass Samsung and HTC. Samsung's patent town with Microsoft encompasses an agreement that Samsung will allocate more assets to developing and marketing teletelephones running Microsoft's Windows Phone operating system.
Google has publicly conveyed its annoyance for the present patent landscape in the joined States, accusing Apple, Oracle and Microsoft of endeavouring to take down Android through patent litigation, rather than innovating and competing with better products and services. In 2011–12, Google bought Motorola Mobility for US$12.5 billion, which was viewed in part as a defensive measure to defend Android, since Motorola Mobility held more than 17,000 patents. In December 2011, Google acquired over a thousand patents from IBM.
In 2013, Fairsearch, a lobbying association sustained by Microsoft, Oracle and others, filed a accusation regarding Android with the European charge, alleging that its free of ascribe distribution model constituted anti-competitive predatory charge. The Free programs base Europe, whose donors encompass Google, disputed the Fairsearch allegations.