Google UK head of mobile advertising, Simon Morgan, considers the most significant developments in the field of m-commerce and crunches the mobile numbers.

Over the past year we've seen smartphones overtake PC sales for the first time. The number of people on the mobile web globally has doubled, reaching one billion and in the UK there are now 20 million mobile internet users. If we think of search as being a barometer of consumer interest, in just 12 months there has been a huge shift.

Mark Bridge writes:

Recording a phone call made by a mobile phone isn’t particularly difficult – it's something we do regularly for our podcasts – but recording every call made and received by a mobile phone isn't so easy. It's even more of a problem for companies with dozens or even hundreds of employees using mobile phones... and yet, for many organisations, this type of thing will soon be a legal requirement.

To learn more, I've been talking to Ian Hook, vice-president of marketing at Compliant Phones. I started by asking Ian why companies would want to record all their mobile phone calls.

Mark Bridge writes:

It’s often said that timing is everything. Or is it size?  I’m never sure.

Both came into play this week as online giant Google announced the forthcoming launch of its much-rumoured mobile payment service. Expect Google Wallet to arrive on the Nexus S 4G in the USA this summer.

Mark Bridge writes:

Don't get me wrong. I'm excited about the idea of mobile payments. But I think the Quick Tap launch and all this talk of a 'mobile wallet' is a little overhyped. And here are the three main reasons why.

Mark Bridge writes:

Almost everyone in the mobile telecoms industry seems to be looking for a perfect payment system that'll transform their mobile phone into some kind of electronic wallet. Yet despite many trial schemes – and a few commercial launches – cards and cash are still favoured by consumers and retailers in much of the world.