Robin Kent writes:

With this week’s announcement that Everything Everywhere has been given the green light to launch the UK’s first 4G service, competing operators such as Vodafone and O2 are getting hot under the collar. With every day that goes by, these operators lose vital competitiveness as the market creeps away them towards Orange and T-Mobile. This is a real life ‘hare and tortoise’ scenario.

We start this week's edition of The Fonecast with a new product from RIM: the mobile-enabled BlackBerry PlayBook. Next comes Vodafone's move to Tech City and Google moving its mobile wallet into the cloud.

You'll also find the latest batch of quarterly results, some mobile data research and a story about sheep sending SMS text messages.

Mark Bridge writes:

Internet veteran Yahoo! provided last week’s biggest news, at least in terms of press coverage. It appointed Marissa Mayer as its President and Chief Executive Officer, having enticed her away from Google after 13 years.

It's a good week for Yahoo! as it appoints Marissa Mayer - previously Google employee number 20 - to the role of CEO. However, things aren't as cheery at Research In Motion, which has been ordered to pay over $147 million in a patent case.

Meanwhile O2 UK is recovering from a network problem that left around a third of its customers disconnected for almost a day.

Mark Bridge writes:

BlackBerry and bad news seem inextricably linked at the moment. RIM’s CEO admits he’s “not satisfied” with recent company performance and warns of challenging times ahead... and then the company is hit by a $147 million dollar damages order for patent infringement.

Mind you, Research In Motion wasn’t the only mobile company bringing disappointment into the mainstream news last week.