Carphone Warehouse Group plc has published a trading update for the fourth quarter of its financial year.

Revenue at CPW Europe - the company’s 50% joint venture with Best Buy - were down 5.5%, while total connections were down 19%. Postpay connections were up in the UK, although the company estimates that the overall prepay market in Q4 was down 30-40% in the UK.

This week’s podcast from The Fonecast starts with news from RIM and Samsung. The BlackBerry 10 platform is offered to developers, while the Galaxy SIII smartphone makes its official debut.

You can listen to the programme on our website audio player, via iTunes, by using our RSS feed or by downloading the MP3.

Textlocal’s top tips on how to use the Olympics to boost your profits and make mobile work for you:

With only 80 days to go until the start of the Olympics 2012, most businesses will have already outlined their marketing strategies to reach out to the new audiences it will attract to the UK. Leading mobile company Textlocal explains how limited time isn’t an issue where mobile messaging is concerned.

We start this week with two big handset stories - BlackBerry 10 and the Samsung Galaxy S3 - before moving on to the rest of the news, including more mobile wallets, more free WiFi, more quarterly results and more legal action!

Research In Motion has hired Kristian Tear as its new Chief Operating Officer and Frank Boulben as Chief Marketing Officer.

Kristian Tear joins from Sony Mobile Communications, where he was the company’s Executive Vice President. Frank Boulben was previously Executive Vice President of Strategy, Marketing and Sales for LightSquared. He’s also held senior roles to Vodafone and Orange.