Mark Bridge writes:

If there’s one theme that dominates the last seven days – and, let’s face it, I like to find a theme wherever possible – it’s new mobile devices.

We started the week with Apple having sold over four million units of the new iPhone 4S in the first three days since its launch. This was followed by Motorola Mobility reinvigorating its RAZR brand by applying it to a high-spec Android smartphone – which in turn was followed by Google and Samsung revealing the Galaxy Nexus.

Swedish business iZettle, which enables individuals and small businesses to take ‘chip and PIN’ card payments on a mobile phone (rather like Square in the USA), says it’s just received €8.2 million (£7.1 million) in funding.

The money has come from by Index Ventures with co-investor Creandum and further investment from Charles Dunstone, CEO and co-founder of The Carphone Warehouse.

The latest company to sign a patent agreement with Microsoft is Taiwan-based manufacturer Compal Electronics.

The new agreement provides coverage under Microsoft’s patent portfolio for Compal’s tablets, mobile phones and eBook readers running the Android and Chrome platforms.

Three UK has launched a TV advertising campaign that promotes the company as being the UK’s fastest growing network.

Two TV ads created by Wieden + Kennedy will be supported by press, print, digital, radio and poster ads during the next few weeks.

Casio has announced the VX-100 business support terminal; an Electronic Point-of-Sale terminal that includes a touch-controlled display and a built-in printer.

Most notably, it runs version 2.2 of the Android operating system.<.p>