However, many calling services as well as calling cards require you to add 
an exit code, also referred to as an international access code, an 
International Call Prefix or IDD (International Direct Dialing code), which 
is used to dial out of a country when making an international call. With so 
many numbers needed to make a simple phone call, having to remember the 
exit code as well as the requested country code, area code and phone number 
can get rather confusing.

By connecting the Rakuten Viber Business Messages channel with a CRM 
platform, brands can personalise their communications effectively with 
their opt-in customer base using a tailored messenger marketing tool.
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Rakuten Viber Business Messages lets you send multiple message types within 
the same channel, making it simpler for the customer and more efficient for 
the brand: transactional, promotional and conversational messages.

A 24-hour conversational session starts whenever a user messages the 
business. After 24 hours or after the limit of 60 messages per session is 
reached, the session terminates automatically. The next time a user 
messages the brand, a new session starts.

For all active businesses, there is a minimum fee per month: no matter how 
many messages are sent, the business will pay *no less* than that sum. At 
the end of the month, each brand receives a bill based on the actual 
messaging traffic it has generated. If it adds up to less than the minimum 
fee, the brand is charged the minimum fee. Otherwise, the business is 
simply charged based on its usage of business messages.

*Viber*, or *Rakuten Viber*, is a cross-platform voice over IP (VoIP) and 
instant messaging (IM) software application owned by Japanese multinational 
company Rakuten, provided as freeware for the Google Android, iOS, 
Microsoft Windows, Apple macOS and Linux platforms.[5] Users are registered 
and identified through a cellular telephone number, although the service is 
accessible on desktop platforms without needing mobile connectivity.[5] In 
addition to instant messaging it allows users to exchange media such as 
images and video records, and also provides a paid international landline 
and mobile calling service called Viber Out.[6] As of 2018, there are over 
a billion registered users on the network.[7][8]

The software was developed in 2010 by Cyprus-based[9] Viber Media, which 
was bought by Rakuten in 2014. Since 2017, its corporate name has been *Rakuten 
Viber*. It is based in Cyprus[10] with offices in London, Manila, Moscow, 
Paris, San Francisco, Singapore, Tokyo, and Beijing.[11][12]

Viber Media was founded in Tel Aviv, Israel, in 2010 by Talmon Marco[13] 
and Igor Magazinnik.[14] Marco and Magazinnik are also co-founders of the 
P2P media and file-sharing client iMesh.[15] The company was run from 
Israel, and was registered in Cyprus. Sani Maroli and Ofer Smocha soon 
joined the company as well.[16][17][18][19][20][21] Marco commented that 
Viber allows instant calling and synchronization with contacts because the 
ID is the user's cell number.[22]

In its first two years of availability, Viber did not generate revenues. It 
began doing so in 2013, via user payments for Viber Out voice calling and 
the Viber graphical messaging "sticker market". The company was originally 
funded by individual investors, described by Marco as "friends and 
family".[23] They invested $20 million in the company, which had 120 
employees as of May 2013[update].[24]

On 13 February 2014, Rakuten announced they had acquired Viber Media for 
$900 million.[26][27] The sale of Viber earned the Shabtai family (Benny, 
his brother Gilad, and Gilad's son Ofer) some $500 million from their 55.2% 
stake in the company.[28][29] At that sale price, the founders each 
realized over 30 times return on their investments.[17]

After first using RV to spread its message in June 2020, the International 
Federation of the Red Cross launched an official chatbot and community on 
the messaging app to combat the spread of false information, which they 
termed an infodemic, about COVID-19.[33] The chatbot is still active as of 
June 2022, with over 1.4 million subscribers.[34]

In 2020, Rakuten Viber and the World Health Organization (the WHO) engaged 
in a commercial transaction for a chatbot to inform users of issues such as 
women's health.[35] and an anti-smoking campaign.[36]

In July 2022, Rakuten Viber partnered with Rapyd to launch instant 
cross-border P2P payments.[40][41] The company launched payments on the 
Viber app first in Greece and Germany, and then in other countries.[42][43]

In May 2022, Rakuten Viber launched the premium chat service Viber Plus 
that offers exclusive features, including sticker market privileges, 
ad-free use, priority Viber support, exclusive badge, unique Viber icon, 
large file sharing, and more.[45]

On 4 November 2014, Viber scored 1 out of 7 points on the Electronic 
Frontier Foundation's "Secure Messaging Scorecard". Viber received a point 
for encryption during transit but lost points because communications were 
not encrypted with keys that the provider did not have access to (i.e. the 
communications were not end-to-end encrypted), users could not verify 
contacts' identities, past messages were not secure if the encryption keys 
were stolen (i.e. the service did not provide forward secrecy), the code 
was not open to independent review (i.e. the code was not open-source), the 
security design was not properly documented, and there had not been a 
recent independent security audit.[46][47] On 14 November 2014, the EFF 
changed Viber's score to 2 out of 7 after it had received an external 
security audit from Ernst & Young's Advanced Security Centre.[46]

On 19 April 2016, with the announcement of Viber version 6.0,[48] Rakuten 
added end-to-end encryption to their service.[49][50] The company said that 
the encryption protocol had only been audited internally, and promised to 
commission external audits "in the coming weeks".[51] In May 2016, Viber 
published an overview of their encryption protocol, saying that it is a 
custom implementation that "uses the same concepts" as the Signal 
Protocol.[52]

As of December 2016[update], Viber had 800 million registered users.[55] 
According to Statista, there are 260 million monthly active users as of 
January 2019.[56] The Viber messenger is very popular in Greece,[57] 
Eastern Europe, Russia, the Middle East, and some Asian markets.[58]

India was the largest market for Viber as of December 2014 with 33 million 
registered users, the fifth most popular instant messenger in the country. 
At the same time there were 30 million users in the United States, 28 
million in Russia and 18 million in Brazil.[59] Viber is particularly 
popular in Eastern Europe, being the most downloaded messaging app on 
Android in Belarus, Moldova and Ukraine as of 2016. It is also popular in 
Iraq, Libya and Nepal.[60]

As of September 2021, Viber is Ukraine's most popular messaging app, with a 
market share of 97.7%. 20% of the company's total messages sent came from 
Ukraine, where users sent 97.5 billion messages in 2021.[68]

In February 2022, Rakuten Group removed advertising from its Viber 
messaging service in Ukraine and Russia in response to the Russian invasion 
of Ukraine.[69] At the same time, Hiroshi Mikitani, the founder of Rakuten 
Viber, donated $8.7 million to support Ukraine.[70]

Viber's market share in Bulgaria is steadily increasing. Reaching a record 
90% in 2021. The number of calls made and messages sent via Viber in 
Bulgaria rose by 11% in 2021, reaching approximately 530 million calls and 
an average of 400 messages per second, according to data presented by the 
company.[71]

As of the end of 2021, over 90% of people in Greece have Viber on their 
phones, making it the top messaging app in the country.[72] In 2022, the 
Municipality of Athens has launched an official Viber community to keep its 
citizens updated on city events, digital services, ongoing projects, 
proposals, activities for all ages, and stray animal information.[73][74]

Viber was initially launched for iPhone on 2 December 2010. It was launched 
on BlackBerry and Windows Phone on 8 May 2012,[76] followed by the Android 
platform on 19 July 2012, and Nokia's Series 40, Symbian and Samsung's Bada 
platform on 24 July 2012, by which time the application had 90 million 
users.[77][78][79]

In May 2013 with Viber 3.0, a desktop version for Windows and macOS was 
released.[80] In August 2013, Viber for Linux was released as a public 
beta[81] and in August 2014 a final version.[82] In June 2016 a UWP-based 
desktop application for Windows 10 was released in the Windows Store.[83] 
The desktop versions are tied with a user's registered Viber mobile number, 
but can operate independently afterwards.[84] In 2015, a version for the 
iPad tablet and Apple Watch smartwatch was released.[85][86]

Viber was originally launched as a VoIP application for voice calling. On 
31 March 2011, Viber 2.0 was released which added instant messaging (IM) 
capabilities.[87] In July 2012 group messaging and an HD Voice engine were 
added to both Android and iOS applications.[88] Today, users can send 
several kinds of media files including photos, videos, GIFs, files, audio 
messages, and stickers.[89]

In addition, version 4.0 introduced push-to-talk capabilities, and Viber 
Out, a feature that provides users the option to call mobile and landline 
numbers via VoIP without the need for the application.[91]

In November 2016, Viber version 6.5 launched Public Accounts to allow 
brands to engage in promotion and customer service on the platform, with 
initial partners including *The Huffington Post*, Yandex and The Weather 
Channel.[55][94] The app integrates with CRM software and offers chatbot 
APIs for customer service.[55] Viber Communities, an enhanced group chat 
feature, was introduced in February 2018.[95] Group calling was introduced 
with version 10 in February 2019.[96] Communities have an unlimited number 
of participants, compared to group chats that have a maximum of 250.[97] 
Viber communities are protective of their users' privacy since neither 
superadmins nor admins can see members' phone numbers. Also, members who 
enable private messages can contact each other while keeping their numbers 
hidden.[98] In October 2020, Viber launched message statistics to go along 
with Community insights. These statistics offer Community admins the 
ability to see engagement levels with the content they post to their 
Communities.[99]
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