Complaints about a TV ad for Doro mobile phones have been upheld by the UK's Advertising Standards Authority. The advertisement showed a demonstration of a Doro handset and described the benefits of Doro big-button phones, ending "Doro mobile phones, brilliantly simple. Only available from Orange, from your local store or online. Find out more at doro.co.uk/easy."

Everything Everywhere, the UK communications giant behind the Orange and T-Mobile networks, is announcing the 'big switch-on' of its network-sharing scheme with a £4 million joint advertising campaign. The two brands will appear 'head to head' in conversation.

Opera, best known for its mobile and desktop web browsers, has launched its own advertising service. The Open Mobile Ad Exchange enables businesses to place ads on the Opera Mini mobile browser, giving them access to an audience of 66.5 million feature phone and smartphone users. Site owners who sign up for the Open Mobile Ad Exchange simply embed JavaScript in their webpages. Today's news follows Opera's acquisition of California-based mobile advertising service AdMarvel earlier this year.

Orange has launched a new service to help companies make the best use of mobile media in marketing campaigns. The Orange Mobile Targeting Monitor, which uses independent 'Mobile Exposure' research from TNS, is available in the UK, France, Spain and Poland. Conducting simultaneous research across all four markets has enabled Orange to offer direct comparisons for multi-market campaigns.

Research In Motion revealed a new tablet device and associated operating system at its developer conference yesterday. The BlackBerry PlayBook tablet will arrive in the USA early next year (and in other markets from Q2 2011), while the BlackBerry Tablet OS software development kit is planned for release in the next few weeks.