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Acquired byO2

General Information


Jajah HQ
2513 Charleston Road
Suite 102
Mountain View, CA, 94043




Series A, 3/2006
Sequoia Capital
Series B, 4/2006
Globespan Capital Partners
Series C, 5/2007
Series D, 3/2009




Jajah is a VoIP service that gives you lower long distance rates by bridging standard phone lines with a cheaper VoIP alternative. You can place Jajah calls by clicking on your contacts through their website (desktop and mobile), various browser plugins, or Google Gadget. You can try out a one time call by going to Jajah and typing in your email address and your contacts info. When you initiate a call by clicking on a contact, Jajah calls back your phone and your contact’s phones. The call is then routed through your phone network (landline or mobile), to Jajah’s servers, and then back out through your contact’s phone.

There is no headset, no download, no software and no broadband connection needed. You are using your existing phone and so is the person you are calling. You can call any phone anywhere in the world without the need of an international calling plan.

Jajah also allows you to get a local number for each of your international contacts. This allows you to save this number in your address book and dial the local number from any land line or mobile, it will ring the person’s phone anywhere in the world.

Jajah combines the best of two worlds: Premium voice quality of a standard land line or cell phone and the cost savings of Internet telephony.

Recent Milestones

  • Handshake
    Jajah was acquired by O2 for $207M. (12/20/09)
    Posted 12/22/09 at 11:06pm via
  • Check
    Jajah — Connects 1 billionth call, Courtesy Of Yahoo Voice (6/23/09)
    Posted 6/23/09 at 8:18pm via
  • Dollar
    Jajah received $5M in Series D funding. (3/1/09)
    Posted 12/20/09 at 5:17pm via
  • Check
    Jajah — JAJAH Customers Can Get Their Own Personal Internet Assistant at Pageonce (7/21/08)
    Posted 7/21/08 at 5:38pm via
  • Check
    Jajah — JAJAH and EMOBILE Launch World's First Wireless IP-Telephony Service in Japan (7/15/08)
    Posted 7/15/08 at 2:15pm via
  • Check
    Jajah — Gizmo5 Partners with Jajah (6/26/08)
    Posted 6/27/08 at 8:49am
  • Check
    Jajah added Shaherose Charania as Director, Product Management / Global Marketing. (5/1/07)
    Posted 3/27/10 at 11:11am
  • Dollar
    Jajah received $20M in Series C funding. (5/1/07)
    Posted 7/2/07 at 11:58am via
  • Check
    Jajah added Jon Sonnenschein as Director, Product Management. (1/1/07)
    Posted 6/25/09 at 6:43pm
  • Check
    Jajah added Paul Naphtali as VP Global Marketing. (6/1/06)
    Posted 8/8/12 at 3:21pm
  • Dollar
    Jajah received $5M in Series B funding. (4/1/06)
    Posted 9/9/07 at 11:44pm via
  • Dollar
    Jajah received $3M in Series A funding. (3/1/06)
    Posted 9/9/07 at 11:44pm via
  • Check
    Jajah added Frederik Hermann as Director Global Marketing. (9/1/05)
    Posted 10/26/09 at 6:45pm
  • Check
    Jajah added Markus Rumler as PR. (4/1/05)
    Posted 7/27/12 at 7:49am
  • Check
    Jajah added Roman Scharf as Co-founder & President. (1/5/05)
    Posted 7/21/07 at 2:10am
  • Check
    Jajah added Ben Dean as Leader of Engineering Team.
    Posted 5/7/08 at 4:14pm





With the EM·ONE device, users in can make and receive voice-over-mobile-broadband calls via its JAJAH Mobile software client without a traditional mobile phone connection.

As of July 2008 this service is only available in Japan.

Jajah screenshot
Above: EM ONE Screenshot -- #1
Uploaded: 7/15/08

Jajah Mobile Plugin
Launch DateJuly 21, 2007
Tags voip

The jajah mobile plugin is seamlessly compatible with Symbian, MS Smartphone Windows CE and PocketPC phones, but can theoretically work well with any phone that supports java. It works the same way the desktop client works, by bridging normal phone lines with VOIP. When users make a mobile call with the plugin their call is routed to one of jajah’s local hubs and then moved over to VOIP which connects to the recipient’s local hub and then finally to the recipient.

Competitors include: Skype, ConnectMeAnywhere GizmoProject, and barablu among others.

Jajah screenshot
Above: Jajah Mobile Plugin Screenshot -- #1
Uploaded: 2/5/08

Traffic Analytics






  1. Confirmed: Jajah Sold For $207 Million ( [edit]
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  3. [edit]
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  5. [edit]
    JAJAH and EMOBILE Launch World's First Wireless IP-Telephony Service in Japan ( [edit]
    JAJAH Customers Can Get Their Own Personal Internet Assistant at Pageonce JAJAH customers on Pageonce to receive their own JAJAH Widget to track and manage all their calls ( [edit]
    TechCrunch ( [edit]
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Last Edited 11/26/13

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