Carphone Warehouse has completed its planned acquisition of Best Buy’s 50% share of the CPW Europe business, bringing an end to the joint retail venture.

From next month’s AGM, Andrew Harrison is stepping up to become CEO of the Carphone Warehouse Group. Roger Taylor, current Group CEO, will become deputy chairman.

Carphone Warehouse is planning to take over the European business that bears its name, which is actually a 50/50 joint venture set up with US-based retailer Best Buy in June 2008. It’s agreed to pay £471 million for the 50% of CPW Europe it doesn’t already own.

This 50% share in Carphone Warehouse was originally sold for around £1.1 billion as part of Best Buy’s European expansion.

American technology retailer Best Buy Co. Inc. has confirmed that it’s received a letter from Richard Schulze, the company’s founder and former chairman, outlining an offer to acquire all the Best Buy shares he doesn’t already own. Mr Schulze resigned as chairman in June this year.

His offer of $24 to $26 per share is significantly above the current trading price for the company’s shares, which are trading at around $20.

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.

The UK-based Mobile Money Network, which is behind the Simply Tap mobile shopping app, says Visa Europe is planning to take a 15% stake in its business. Visa Europe will join the MNN’s three founders: Monitise, Best Buy Europe and Charles Dunstone.

The two businesses aim to implement a number of m-commerce initiatives in the UK in 2012.

Mark Bridge writes:

The adage that “the customer is always right” has apparently been disproved by a recent survey of mobile phone users.

Mobile News reports that virtual networks Virgin Mobile and Tesco Mobile outperformed their network partners in a recent customer satisfaction survey carried out by research firm YouGov for price comparison website uSwitch.

Mark Bridge writes:

I knew I’d seen it before. Towards the end of last week I read about a study from the Department of Computer and Information Science at the University of Pennsylvania that said it was pretty easy to identify passwords from smudges on touchscreen mobile phones.

James Rosewell writes:

Yesterday I received the following text message from O2: “You’ve gone over your data allowance on your mobile. You need to cut down or get a bigger Bolt On to keep using the internet.” I thought this was strange as I’ve an unlimited data bolt on applied to my O2 UK contract so I decided to telephone O2 customer services to find out a little bit more. Here’s what happened.

This week's Carnival of the Mobilists – the best mobile blogging (and podcasting!) of the last seven days – is online at Tam Hanna's new TamsBada site. As always, you'll find a wide variety of mobile-related subjects and discussions.

Mark Bridge writes:

Supermarkets. You either love ‘em or hate ‘em. Actually, that’s not true. Most of us seem to be happy enough with a half-price bottle of wine but less convinced about globalisation and supplier relationships.

But none of that’s bothering me today. Instead, I’m troubled – as I have been for several months – by the TV commercial for Tesco’s prepay mobile phone tariff.

Iain Graham, James Rosewell and Mark Bridge return to review their mobile industry predictions from last year. Which mergers, partnerships and developments did they forecast correctly... and which didn’t work out as planned?

Later in the programme, the team anticipates some of the topics that will be hitting the headlines during 2016.

Mark Bridge learns about the mobile technology trends at Mobile World Congress 2015 by chatting to James Rosewell of 51Degrees, Dr Kevin Curran from the IEEE and Chris Millington of Doro.

They talk about wearable devices, wireless charging, mobile operating systems and much more... including some of their favourite products from the exhibition.

We're taking a look back at the biggest mobile industry news stories from February 2015, including allegations that the UK's security service tried to breach SIM card security by hacking into one of the world's biggest SIM producers.

We also talk about the planned BT and EE merger, the creation of two new UK virtual networks, some acquisitions in the mobile payment arena and a new Ubuntu smartphone.

In today's programme Mark Bridge talks to Chris Millington, who's Managing Director for Doro UK and Ireland.

They discuss the state of mobile retailing in the UK, the future of wearable devices and - as you might expect - smartphones for seniors.

We're back with a month of mobile industry news, including takeover talks and takeover rumours. O2 and Three are said to be discussing a merger... but is there any truth in the suggestions that BlackBerry could be up for grabs?

We also discuss Apple's record-breaking quarterly figures, the highlights of CES and the launch of Microsoft Windows 10, as well as saying farewell to the current version of Google Glass.