We start this week with a look at troubled UK retailer HMV before moving on to research that sheds new light on mobile data usage.

You'll also find a new mapping app, increasing free WiFi coverage, a phone service designed for children and preliminary quarterly results from Samsung and Nokia.

Mark Bridge writes:

Oh, how the mobile industry loves a superlative. Much like the work ethic celebrated by Daft Punk (or Kanye West, if you prefer), it’s always looking for a new angle.

NTT Docomo says it’s working on a mobile phone that’s aimed specifically at pre-teen children and teenagers who are upper elementary and junior high school students in Japan.

The Smartphone for Juniors SH-05E is being manufactured by Sharp and will go on sale in early February.

Seven major mobile network operators - KPN, NTT DOCOMO, Rogers, SingTel, Telefónica, Telstra and Vimpelcom - have formed an alliance that’ll see them working together on machine-to-machine (M2M) projects.

The initiative is also open to other operators.

Mark Bridge writes:

It’s time for my summary of last week’s mobile industry news… and what a week it’s been. Not just for me – I made my first-ever visit to Over The Air on Friday – but for the world of mobile devices.