Google has acquired Quickoffice, which produces mobile office productivity applications for Android, Apple iOS and Symbian handsets.

Quickoffice enables users to access Microsoft Office documents and update them from a mobile device.

Enterprise IT business Citrix has agreed to acquire California-based Bytemobile, which it describes as a leading provider of data and video optimisation solutions for mobile network operators.

It notes that the acquisition expands its market reach by providing a foothold in the core infrastructure of more than 130 mobile operators in 60 countries. Both companies had formed a strategic partnership earlier this year.

Vodafone Group has taken a controlling stake in Invitation Digital Limited, the parent company of mobile coupon provider Vouchercloud. It now has a 57% stake in IDL, having originally taken a 21% stake in May last year.

The news came as Vouchercloud expanded beyond the UK into Ireland. Further country launches, along with details of Vouchercloud integration into Vodafone m-commerce activities, are expected in the future.

Facebook’s App Center, which the company describes as ‘a new place to find social apps’, has now launched on the Facebook web site and via its iOS and Android mobile apps. Announced last month, the App Center is currently only available to customers in the USA.

The App Center features existing Facebook-friendly mobile and web apps as well as new apps. Currently over 600 apps are available, with the service offering personalised recommendations.

James Rosewell reports from Over The Air 2012 in today's podcast.

The event, which took place on 1st and 2nd June 2012 at Bletchley Park, attracted around 600 mobile developers and designers to celebrate all things mobile.