What is Viber?

What is Viber? Well, official description would be that Viber is a free VoIP service and client application for mobile phones, tablets and desktop computers.
When Viber came out in 2010, it was a an application designed for sending free messages and making free calls between users who also have Viber installed on their mobile phones.
Today, users can send free messages and make free HD-quality calls to other Viber users on iPhone®, Android™, Windows Phone, Blackberry®, Windows®, Mac, Symbian, Nokia S40 and Bada devices over 3G/4G or WiFi connections.
With version 4.0, released in November 2013, Viber users got another awesome feature – Viber Out. With this feature, Viber users can call any mobile or landline phones, even those who don’t have Viber installed.
With more than 200 million users in over 193 countries, Viber is constantly innovating by introducing new platforms and adding fun new features including stickers and emoticons.

Viber is developed by Viber Media, a privately held company founded in February 2010.

– Very easy installation and activation (no user account)
– Address book import
- High definition call quality
– Text and photo messaging
Sticker market
Viber out – enables calls to non Viber users at low call rates
– Excellent GUI

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If you are having technical problem on using Viber, please provide as much information as you can: what device and OS you are using, is your device jailbroken iPhone or Android with custom ROM, what country and what mobile operator you are on, is the problem related to 3G or to WI-FI connection...
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  • Afonso

    I'm living abroad and using viber on an android phone.
    I've changed the sim card (foreign country – Brasil) and I can still use it with original PT contacts.
    But the friends that have BR numbers (that have Viber) do not appear.

    • ViberTeam

      Roaming (being abroad with a number that's not local) does not affect Viber at all.
      The problem has a different source.

      If you originally registered your Viber with a Portuguese number (or any number that's not Brazilian), then please make sure that the Brazilian numbers that are saved in their full format: +55-XX-XXXX-XXXX

      After you do this, wait a few minutes and see if they are recognized now.

  • Sabina Chiquet

    Does a viber call use excess data? How much data per minute?

    • http://www.viber.com Viber

      The bandwidth rate during a Viber call is approximately 240 KB per minute up and down, 14 MB per hour up and down.

  • Lani_jane

    I am travelling overseas from australia. I have an iphone 4 from optus (less than a month old), my phone is unlocked, data roaming is off – to avoid excessive data charges, wifi is on & I can get coverage when in a free wifi area. I want to be able to call/txt friends & family in Aust, & ,family & friends while overseas with the minimum of expense!. Does this only work with mobile numbers? Do my friends & family have to have this app too?

    • http://www.viber.com Viber

      Hi Lani,

      You need an active phone number in order to receive the access code (it can also be landline/ temporary phone number), after the setup you won’t need it anymore.

      Calls and texts are free between Viber users, therefore your friends and family need to have the app too.

      • http://www.facebook.com/caroline.connor Caroline Connor

        That’s not exactly true though … you do get charged for the data you use and if your phone drops wifi and goes 3G yu get charged for the phone call

        • http://www.viber.com/ Viber

          Viber itself is totally free, meaning we (Viber) don’t charge anything from you.

          Since Viber uses the internet, both sides of the conversation must be connected to either WiFi or 3G. If a user is connected to WiFi – that user is not paying anything for sure. If the user is connected to 3G, the user *may* be paying his cell company for the data (about 0.3MB per minute of call), but that depends on the specific data plan that he has with his cellular company, and needs to be verified with them.

  • Dtcelowe

    Hi guys, I have viber on Iphone at the moment, and my contacts are all on viber for iphone. If I change to Android am I still able to viber my iphone contacts, or is it just iphone to iphone or android to android? Thanks

    • http://www.viber.com Viber

      Viber lets you call or text anyone else who has Viber, even if they have Android, or any other device (in the future, Blackberry for example).

  • Ekua26

    Hi, My servicer (Sprint) has changed
    me for the long distance call @ 1.97 cents a minute…ouch! Not a
    happy Viper user at the moment. What happen? Can someone please let me
    understand how to avoid this in the future. This is very disappointing
    and upsetting. When
    I inquired with sprint, they told me to consult
    with Viber, perhaps, something happened that day where the call was
    routed through Sprint and not Viper. I was also told that I am using
    Viper at my own risk and suggest not to use it. Help,
    somebody…anybody. Thx

  • sush

    Can other contact see my messges Which has been sent to other contact

    • http://www.viber.com/ Viber

      Only the contact who you sent the message will be able to see it, because he will be the only one who will receive it :)

  • pppppppp

    Hi. I am from Mauritius and as from today the numbers have changed to 8 digit from 7 digits. Hence, viber no longer recognises my contacts. Any help?

    Also the activation would not let me use 8 digits for verificatioon

    • Zia

      Please help im getting same problem

      • http://www.viber.com/ Viber


        This is a known issue, and we’re hoping to fix it in our upcoming
        update. We apologize for the temporary inconvenience, and we’d
        appreciate if you could get back to us after installing our next update
        and report whether or not the problem has been fixed :)

        Thank you!

  • russell

    my wife and I both have Viber on our phones and want to upload the desktop version onto our iMac. Can we both have 2 different Viber accounts on the one iMac?

    • http://www.viber.com/ Viber


      Unfortunately it is not possible to have 2 different accounts on the same device. We might add this option in future versions of Viber, and when we have news we’ll let you know.

  • russell

    i have Viber on my iPhone, and 2 different Facebook accounts. Even though my ‘sensible’ facebook account was open before I uploaded Viber, Viber auto-connected to my ‘other’ Facebook account. How do I change the facebook account that Viber has sync’d to?

    • http://www.viber.com/ Viber

      Thank you for the report of the problem.

      we would appreciate if
      you could take a minute and report the details to our support team using
      this direct link:

      you submit the ticket, in the line called: “Through which channel did
      you submit your initial inquiry”, please make sure to choose “Technical

      Thanks in advance!

  • shabas

    Hi.. Can I do Viber call in Lenovo A2107 tab ?? It is SIM supported but no voice call Support.

  • Adem


  • nana boakye

    can I send viber app to a cellphone at different location other than where I am using the internet

    • http://www.viber.com/ Viber

      Hey, you can invite your contacts to join Viber from any location, as long as you have a stable internet connection

  • SF

    I’m am from the Netherlands and am going to use a 500mb data only SIM during my vacation in Morocco. I see no problem in using this 500mb also for phoning home to my girls iPhone VIber?

    About 0,5mb data/min it is, isn’t it?

    • http://www.viber.com/ Viber


      We are unable to an estimate of data usage per minute. It depends on many factors so it’s hard to provide an estimation.

      If you are concerned with your data consumption, you should connect to Wi-Fi.

      Enjoy your vacation!

  • SF

    Another question, how much data will I be spending when someone else Vibers me?

  • mirna kamal

    why I cant see some of my contacts as part of “viber out” only the under the category viber? I mean where in the boxes above there’s , viber, all, and viber out, some dont show under this category (viber out) !

    • http://www.viber.com/ Viber

      Hi Mirna,

      Viber users will not show up under the “Viber Out” contact list.

  • maspasaway

    i have an old nokia and do not have viber, my son is on viber so when i called him long distance my phone call appears as viber call, is this posibble?

    • http://www.viber.com/ Viber


      In order to place Viber-to-Viber calls, both contacts must have Viber installed.

      Additionally, Viber calls are not supported on Nokia devices that are running the Symbian platform.

      I’m not quite sure what you mean when you say that the call appears as a Viber call, but this is not possible based on the information that you gave above.