Google Duo

Google Duo is a video chat mobile app developed by Google, available on the Android and iOS operating systems. It was announced at Google's developer conference on May 18, 2016, and began its worldwide release on August 16, 2016. It is also available to use via Google's Chrome browser on desktop and laptop computers.

Google Duo lets users make video calls in high definition. It is optimized for low-bandwidth networks. End-to-end encryption is enabled by default. Duo is based on phone numbers, allowing users to call someone from their contact list. The app automatically switches between Wi-Fi and cellular networks. A "Knock Knock" feature lets users see a live preview of the caller before answering. An update in April 2017 lets users worldwide make audio-only calls.

In an email sent to Android phone manufacturers on October 5, 2016, Google announced that, starting December 1, 2016, Google Duo replaced Hangouts within the suite of Google apps Android phone makers must pre-install on devices, with Hangouts instead becoming an optional app for phone makers to pre-install.[3]

In October 2017, Google Duo was integrated into Google Phone, Contacts, and Android Messages on the Pixel, Nexus, and Android One phones. This integration will be brought to other Android phones and carriers in the near future.[4][5]

Google Duo
Google Duo logo
Google Duo
A screenshot of Duo
Developer(s)Google LLC
Initial releaseAugust 16, 2016
Stable release(s) [±]
Android49.0.236391473.DR49_RC05 / March 4, 2019[1]
iOS38.4 / August 22, 2018[2]
Operating system
Available inEnglish
TypeVideo chat mobile app


Google Duo video calls are in 720p HD video.[6] It is optimized for low-bandwidth mobile networks through WebRTC and uses QUIC over UDP. Optimization is further achieved through the degradation of video quality through monitoring network quality.[7] "Knock Knock" shows a live preview of the caller before the recipient picks up, which Google says is to "make calls feel more like an invitation rather than an interruption".[8] End-to-end encryption is enabled by default.[6] Duo is based on phone numbers, allowing users to call people from their contact list.[6] The app automatically switches between Wi-Fi and cellular networks.[6]

In March 2017, it was announced that Google Duo would let users make audio-only calls. The feature was first launched in Brazil,[9][10][11] with a global rollout in April.[12][13]

A year later in March 2018, video and voice messages were added to Duo. Users can leave messages up to 30 seconds long for contacts who are unavailable. These messages can then be viewed by the other party, with the option of calling afterwards.[14]

See also


  1. ^ "Google Duo". APKMirror. Android Police. March 11, 2018. Retrieved March 11, 2018.
  2. ^ "Google Duo - Video Calling". App Store. Apple Inc. March 11, 2018. Retrieved March 11, 2018.
  3. ^ Ruddock, David (October 7, 2016). "Google is demoting Hangouts to "optional" in the Google Apps package for Android, to be replaced by Duo". 9to5google. Retrieved October 20, 2016.
  4. ^ Schoon, Ben (October 11, 2017). "Google Duo integration officially rolling out to Pixel, Nexus, will come to other Android phones 'over time'". Android Police. Retrieved October 13, 2017.
  5. ^ Hager, Ryne (October 11, 2017). "Duo and ViLTE video call integration with Google Phone, Contacts, and Android Messages is rolling out to Google-supported phones". Android Police. Retrieved October 13, 2017.
  6. ^ a b c d Fulay, Amit; Adan, Yariv (May 18, 2016). "Saying 👋 to Allo and Duo: new apps for smart messaging and video calling". The Keyword Google Blog. Google. Retrieved January 9, 2017.
  7. ^ Bohn, Dieter (May 18, 2016). "Google Duo makes mobile video calls fast and simple". The Verge. Vox Media. Retrieved October 21, 2016.
  8. ^ Uberti, Justin (August 16, 2016). "Meet Google Duo, a simple 1-to-1 video calling app for everyone". The Keyword Google Blog. Google. Retrieved January 9, 2017.
  9. ^ Queiroz, Mario (March 22, 2017). "Google for Brazil: Building a more inclusive internet for everyone, everywhere". The Keyword Google Blog. Google. Retrieved March 22, 2017.
  10. ^ Erlick, Nikki (March 22, 2017). "Google announces app updates to Allo, Duo, and Photos". The Verge. Vox Media. Retrieved March 22, 2017.
  11. ^ Palmer, Jordan (March 22, 2017). "Google Duo is finally getting an audio-only call option, rolling out first in Brazil [APK Download]". Android Police. Retrieved March 23, 2017.
  12. ^ Vincent, James (April 10, 2017). "Google Duo's voice calls are now available worldwide". The Verge. Vox Media. Retrieved April 10, 2017.
  13. ^ Palladino, Vallentina (April 10, 2017). "Google Duo's audio call feature is now available for all users worldwide". Ars Technica. Condé Nast. Retrieved April 10, 2017.
  14. ^ Lindsay, Dave (March 7, 2018). "Miss a call—but not the moment—with video messages on Google Duo". The Keyword Google Blog. Retrieved March 15, 2018.

External links

All India Bakchod

All India Bakchod aka AIB was a creative agency based in Mumbai, India. Bakchod is Hindi slang for 'senseless fucker', and the name is derivative of All India Radio. Tanmay Bhat and Gursimranjeet Singh Khamba started the AIB podcast in Mumbai, in 2012. Co-founders Rohan Joshi and Ashish Shakya soon joined, and became the four founding members of the comedy group. They started doing group comedy shows, sketches, and later became a creative agency in 2015. Apart from creating branded content they worked as comedy writers, columnists, and performed stand-up. They took inspiration from Louis C.K., Patrice O’Neal, and Chris Rock.

On October 8, 2018, Khamba and Bhat were asked to leave AIB amid their involvement, and complicit behavior, in separate sexual harassment allegations. Bhat was accused of ignoring complaints of sexual misconduct and harassment leveled against former AIB employee, and frequent collaborator, Utsav Chakraborty. Bhat apologized on Twitter. In a separate incident an unnamed woman accused Khamba of violating her consent, and emotional abuse. Khamba has denied these allegations. As as result of these allegations, Khamba and Bhat were both fired from various roles across networks, and Hotstar terminated AIB's news comedy show mid-season. In October, 2018, it was announced AIB would dissolve for an indefinite amount of time. Since January, 2019, Joshi and Shakya have re-entered the stand-up comedy circuit, while Bhat and Khamba have not issued any subsequent updates.

Comparison of VoIP software

This is a comparison of voice over IP (VoIP) software used to conduct telephone-like voice conversations across Internet Protocol (IP) based networks. For residential markets, voice over IP phone service is often cheaper than traditional public switched telephone network (PSTN) service and can remove geographic restrictions to telephone numbers, e.g., have a PSTN phone number in a New York area code ring in Tokyo.

For businesses, VoIP obviates separate voice and data pipelines, channelling both types of traffic through the IP network while giving the telephony user a range of advanced abilities.

Softphones are client devices for making and receiving voice and video calls over the IP network with the standard functions of most original telephones and usually allow integration with VoIP phones and USB phones instead of using a computer's microphone and speakers (or headset). Most softphone clients run on the open Session Initiation Protocol (SIP) supporting various codecs. Skype runs on a closed proprietary networking protocol but additional business telephone system (PBX) software can allow a SIP based telephone system to connect to the Skype network. Online chat programs now also incorporate voice and video communications.

Other VoIP software applications include conferencing servers, intercom systems, virtual foreign exchange services (FXOs) and adapted telephony software which concurrently support VoIP and public switched telephone network (PSTN) like Interactive Voice Response (IVR) systems, dial in dictation, on hold and call recording servers.

Some entries below are Web-based VoIP; most are standalone applications.


Google LLC is an American multinational technology company that specializes in Internet-related services and products, which include online advertising technologies, search engine, cloud computing, software, and hardware. It is considered one of the Big Four technology companies, alongside Amazon, Apple and Facebook.Google was founded in 1998 by Larry Page and Sergey Brin while they were Ph.D. students at Stanford University in California. Together they own about 14 percent of its shares and control 56 percent of the stockholder voting power through supervoting stock. They incorporated Google as a privately held company on September 4, 1998. An initial public offering (IPO) took place on August 19, 2004, and Google moved to its headquarters in Mountain View, California, nicknamed the Googleplex. In August 2015, Google announced plans to reorganize its various interests as a conglomerate called Alphabet Inc. Google is Alphabet's leading subsidiary and will continue to be the umbrella company for Alphabet's Internet interests. Sundar Pichai was appointed CEO of Google, replacing Larry Page who became the CEO of Alphabet.

The company's rapid growth since incorporation has triggered a chain of products, acquisitions, and partnerships beyond Google's core search engine (Google Search). It offers services designed for work and productivity (Google Docs, Google Sheets, and Google Slides), email (Gmail/Inbox), scheduling and time management (Google Calendar), cloud storage (Google Drive), social networking (Google+), instant messaging and video chat (Google Allo, Duo, Hangouts), language translation (Google Translate), mapping and navigation (Google Maps, Waze, Google Earth, Street View), video sharing (YouTube), note-taking (Google Keep), and photo organizing and editing (Google Photos). The company leads the development of the Android mobile operating system, the Google Chrome web browser, and Chrome OS, a lightweight operating system based on the Chrome browser. Google has moved increasingly into hardware; from 2010 to 2015, it partnered with major electronics manufacturers in the production of its Nexus devices, and it released multiple hardware products in October 2016, including the Google Pixel smartphone, Google Home smart speaker, Google Wifi mesh wireless router, and Google Daydream virtual reality headset. Google has also experimented with becoming an Internet carrier (Google Fiber, Project Fi, and Google Station) is the most visited website in the world. Several other Google services also figure in the top 100 most visited websites, including YouTube and Blogger. Google is the most valuable brand in the world as of 2017, but has received significant criticism involving issues such as privacy concerns, tax avoidance, antitrust, censorship, and search neutrality. Google's mission statement is "to organize the world's information and make it universally accessible and useful", and its unofficial slogan was "Don't be evil" until the phrase was removed from the company's code of conduct around May 2018.

Google Allo

Google Allo was an instant messaging mobile app by Google for the Android and iOS mobile operating systems, with a web client available on Google Chrome, Mozilla Firefox, and Opera.

The app uses phone numbers as identifiers, and allows users to exchange messages, files, voice notes and images. It includes a virtual assistant, a feature that generates automatic reply suggestions, and an optional encrypted mode known as incognito mode. Users can resize messages and add doodles and stickers on images before sending them.

Before launch, Google touted strong privacy in the app, with particular emphasis on messages stored "transiently and in non-identifiable form". However, at launch, privacy was significantly rolled back, with Google now keeping logs of messages indefinitely (or until the user deletes messages) in an effort to improve the app's "smart reply" feature.

Google Assistant

Google Assistant is an artificial intelligence-powered virtual assistant developed by Google that is primarily available on mobile and smart home devices. Unlike the company's previous virtual assistant, Google Now, Google Assistant can engage in two-way conversations.

Assistant initially debuted in May 2016 as part of Google's messaging app Allo, and its voice-activated speaker Google Home. After a period of exclusivity on the Pixel and Pixel XL smartphones, it began to be deployed on other Android devices in February 2017, including third-party smartphones and Android Wear (now Wear OS), and was released as a standalone app on the iOS operating system in May 2017. Alongside the announcement of a software development kit in April 2017, the Assistant has been, and is being, further extended to support a large variety of devices, including cars and third party smart home appliances. The functionality of the Assistant can also be enhanced by third-party developers.

In 2017, Google Assistant was installed on more than 400 million devices.Users primarily interact with Google Assistant through natural voice, though keyboard input is also supported. In the same nature and manner as Google Now, the Assistant is able to search the Internet, schedule events and alarms, adjust hardware settings on the user's device, and show information from the user's Google account. Google has also announced that the Assistant will be able to identify objects and gather visual information through the device's camera, and support purchasing products and sending money, as well as identifying songs.

At CES 2018, the first Assistant-powered smart displays (smart speakers with video screens) were announced, with the first one being released in July 2018.

Google Hangouts

Google Hangouts is a communication platform developed by Google which includes messaging, video chat, and VOIP features. It replaces three messaging products that Google had implemented concurrently within its services, including Google Talk, Google+ Messenger (formerly: Huddle), and Hangouts, a video chat system present within Google+. Google has also stated that Hangouts is designed to be "the future" of its telephony product, Google Voice, and has already integrated some of the capabilities of Google Voice into Hangouts. Users can be messaged by their Google+ accounts. In March 2017 Google announced Hangouts would be developed into a product aimed at business users with the Hangouts brand divided into two main products: Hangouts Chat and Hangouts Meet. Google announced plans in 2019 to shut down Hangouts "Classic" and transition enterprise G Suite customers to Hangouts Chat.

Google mobile services

Google Mobile Services (GMS) is not a part of Android Open Source Project (AOSP). Which means an Android manufacturer needs to obtain license from Google in order to get a right to install GMS on an Android device. License is provided by Google without any license fee.

GMS consist of two parts; popular bundle package and other bundle package. In order to gain a license for GMS, popular bundle package need to be preinstalled by Android device manufactures, usually called pre-loaded apps.

Index of Android OS articles

A list of Android (operating system)-related topics

List of Google apps for Android

The list of Google apps for Android lists the mobile apps developed by Google for its Android operating system. All of these apps are available for free from the Google Play Store, although some may not show up in search results if they are listed as incompatible with your device (even though they may still function from an *.apk). Some of Google's apps may be pre-installed on some devices, depending upon the device manufacturer and the version of Android. A few of these apps, such as Gboard, are not supported on older versions of Android.

List of mergers and acquisitions by Alphabet

Google is a computer software and a web search engine company that acquired, on average, more than one company per week in 2010 and 2011. The table below is an incomplete list of acquisitions, with each acquisition listed being for the respective company in its entirety, unless otherwise specified. The acquisition date listed is the date of the agreement between Google and the acquisition subject. As Google is headquartered in the United States, acquisition is listed in US dollars. If the price of an acquisition is unlisted, then it is undisclosed. If the Google service that is derived from the acquired company is known, then it is also listed here. Google itself was re-organized into a subsidiary of a larger holding company known as Alphabet Inc. in 2015.

As of December 2016, Alphabet has acquired over 200 companies, with its largest acquisition being the purchase of Motorola Mobility, a mobile device manufacturing company, for $12.5 billion. Most of the firms acquired by Google are based in the United States, and, in turn, most of these are based in or around the San Francisco Bay Area. To date, Alphabet has divested itself of four business units: Frommers, which was sold back to Arthur Frommer in April 2012; SketchUp, which was sold to Trimble in April 2012, Boston Dynamics in early 2016 and Google Radio Automation, which was sold to WideOrbit in 2009.Many Google products originated as services provided by companies that Google has since acquired. For example, Google's first acquisition was the Usenet company Deja News, and its services became Google Groups. Similarly, Google acquired Dodgeball, a social networking service company, and eventually replaced it with Google Latitude. Other acquisitions include web application company JotSpot, which became Google Sites; Voice over IP company GrandCentral, which became Google Voice; and video hosting service company Next New Networks, which became YouTube Next Lab and Audience Development Group. CEO Larry Page has explained that potential acquisition candidates must pass a sort of "toothbrush test": Are their products potentially useful once or twice a day, and do they improve your life?Following the acquisition of Israel-based startup Waze in June 2013, Google submitted a 10-Q filing with the Securities Exchange Commission (SEC) that revealed that the corporation spent $1.3 billion on acquisitions during the first half of 2013, with $966 million of that total going to Waze.

List of most-downloaded Google Play applications

The list of most-downloaded Google Play applications includes most of the free apps that have been downloaded more than 500 million times and most of the paid apps that have been downloaded over one million times on unique Android devices. There are numerous Android apps that have been downloaded over one million times from the Google Play app store and it was reported in July 2017 that there are 319 apps which have been downloaded at least 100 million times and 4,098 apps have been downloaded at least ten million times. The barrier for entry on this list is set at 500 million for free apps to limit its size. Many of the applications in this list are distributed pre-installed on top-selling Android devices and may be considered bloatware by some people because users did not actively choose to download them. The table below shows the number of Google Play apps in each category.

List of video telecommunication services and product brands

This list of video telecommunication services and product brands is for groupings of notable video telecommunication services, brands of videophones, webcams and video conferencing hardware and systems, all related to videotelephony for two-way communications with live video and audio.

The first section includes video telecommunication devices such as videophones, videoconferencing and telepresence systems, webcams and related products such as codecs and videoconferencing software clients;

the second section is a listing of video telecommunication services such as Video Relay Services (for deaf, hard-of-hearing and speech-impaired individuals), telemedicine, Public Access Videoconferencing facilities, etc...;

the last section at the bottom of this page lists defunct brands and services for historical research purposes.The products below are listed by their normal and intended purpose, even though their names or descriptions may differ from the categories shown here (refer to terminology within general article pages).


OxygenOS (Chinese: 氧OS; pinyin: yǎng OS) is a customized version of the Android mobile operating system developed by Chinese smartphone manufacturer OnePlus exclusively for their smartphones. OxygenOS was developed for their overseas market. There is also another version of the OS designed specifically for the Chinese home market called HydrogenOS (Chinese: 氢OS; pinyin: qīng OS).In an interview published 3 September 2016, XDA Developers revealed OnePlus was "actively merging both platforms (OxygenOS and HydrogenOS) into a single cohesive operating system".


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