In today's podcast: Samsung's profit, UK mobile ad spending and Vertu's smartphone range are all increasing.

Meanwhile HTC's profit and the proportion of children with mobile phones are both going down. Discover the background to these news stories - and plenty more - in our regular weekly broadcast.

The amount of money spent on mobile-based advertising in the UK grew by 127% year-on-year to £429.2 million in the first half of 2013.

It means that 14.1% of all digital advertising spend is now targeted at mobile devices, which is nearly double the same period last year.

The UK Advertising Standards Authority has upheld a complaint about recent advertisements for discounted Barnes & Noble Nook eBook readers.

In April Barnes & Noble cut the price of the basic Nook reader from £79 to £29, advertising the product’s availability at Argos, Asda, Blackwell’s, Currys, Foyles, John Lewis, PC World, Sainsbury’s and Very.

There's good news for Telefonica as it's chosen to support the UK's smart meter rollout - but bad news for fans of the Microsoft Tag barcode, which is being discontinued in a couple of years' time.

We're also talking about drivers who use mobile phones illegally, Amazon's new service for mobile developers, the forthcoming Kazam smartphone, mobile advertising, satellite broadband, wearable security accessories and a word that's completely unacceptable to Motorola.

Independent mobile advertising business Millennial Media has agreed to acquire privately-owned rival Jumptap.

The deal is described as a 'predominantly stock transaction', with Jumptap shareholders receiving Millennial Media shares.