Mobile instant messaging and social networking firm Miyowa has been bought by Synchronoss Technologies for $45.5m (£29.5m), with up to $13.5m in additional payments depending on an earn-out over the next four quarters.

Synchronoss provides transaction management, cloud enablement and mobility management for connected devices. The firm will add Miyowa’s capabilities and technology to its existing mobility platform for connected devices.

“Our ConvergenceNow Plus+ platform enables devices to connect, sync and activate an expanding array of services from any device,” says Synchronoss chairman and CEO, Stephen G. Waldis. “The acquisition of Miyowa expands our existing mobility platform by adding powerful social networking device capabilities and reinforces our strategic vision for global cloud enablement of connected devices.

“Our ConvergenceNow Plus+ platform and its Network Address Book has become an even more powerful social address book as it is enhanced with the addition of the Miyowa product suite. Our combined value proposition will truly enable mobile and social to come together, delivering a significant unified and easy to use social experience for our Tier 1 Service Providers and OEM customers.”

Miyowa’s customers include Orange, as well as device manufacturers such as HTC, Samsung and ZTE. Additionally, the company has partnerships with the world’s best known social networks and messaging providers, including Facebook, Twitter, Windows Live, Yahoo!, Gtalk and AIM, many through privately accessible API’s. The combined technology stacks will enable Synchronoss to enhance its cloud strategy across multiple devices and operating platforms.