Mark Bridge writes:

Voice over IP – the ability to make phone calls over the internet - is a topic we covered in our first-ever podcast five years ago. At times it promised to change the way we used mobile phones... so what's been happening?

I've been talking to Tanveer Sharif, CEO and co-founder of international call service Vopium, to learn more.

Mark Bridge writes:

Having just returned from a week's holiday in a part of the country where mobile coverage was surprisingly sparse, it struck me how much mobile phones were linked to the recent English riots and looting.

Mark Bridge writes:

A mobile phone case is often seen simply as a revenue opportunity for retailers. But, as you might expect, there's a lot more to this type of accessory than first meets the eye.

I started this week's podcast feature by asking Rhona Cashman from protective case manufacturer OtterBox why mobile phone dealers should be discerning about the cases they sell.

Mark Bridge writes:

David Drummond, Google's Senior Vice President and Chief Legal Officer, has just written a blog post that describes an 'anti-competitive strategy' against Android by companies including Apple, Microsoft and Oracle. Entitled "When patents attack Android", it points out that more than 550,000 Android devices are now activated every day... and says this has resulted in "a hostile, organized campaign against Android".

Mark Bridge writes:

Last month, News Corporation's Rupert Murdoch said the News of the World had accounted for just 1% of his global business. It's a figure that put the overall size of News Corp into perspective.

This week, some analysis of Microsoft's financial results seems to suggest Windows Phone is only generating a similarly small percentage for its parent.