Launched in 1999 and distributed by Dada in the U.S. market since 2006, Upoc was the first company to offer mobile chat groups.
Upoc allows users to share text, picture (MMS) and voice messages among groups of people. Members create chat groups for their friends and family and then can send a single message for everyone to receive simultaneously. Upoc also offers a social networking service where members can browse groups (and member profiles) that reflect their interests. Top groups historically include fans of hip-hop and rap.
In October 2007, Upoc released the beta version of a web service called Up2 which allows users to broadcast themselves through micro-post and to receive updates (up to 140 characters) from people whom they are interested in connecting.
Upoc has suffered since being taken over by Dada. Many longtime users have left due to issues with messages being slow or unposted, the inability of group owners to accept join requests (receiving a message instead that they have joined their own group), and group settings being randomly set to "public" without group owners permission, resulting in unwanted people on private groups.
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