In this week's podcast we talk about two of the big announcements from Google I/O: a new version of Android and the retail launch of smartwatches powered by 'Android Wear'.

We also talk about Android-based smartphones from Nokia and Blackphone, network complaints in the UK, a reduction in European roaming charges and mobile ticketing.

This week's podcast begins with news about the creation of Dixons Carphone plc. We then move on to talk about patent-related legal action, customised Braille phones and the health concerns of children using smartphones.

There's also time to discuss tablet shipments, potential protests and foreign network sales.

Dr Kevin Curran, Reader in Computer Science at the University of Ulster, joined us during Mobile World Congress to offer his well-informed opinion about trends in mobile technology.

We talked about a wide range of topics, including battery life, disposable tablets, wearables, m-health, 4G fragmentation, connected furniture, M2M security, the rise of video and the IEEE.

We start this week's report with two new smartphones: a flagship Android device from LG and a dual-boot handset from Geeksphone.

We also talk about the health effects of mobile phones, a new mobile loyalty app, wireless charging, machine-to-machine connections, the purchase of Viber and a recent acquisition by Google.

In this week's podcast, James Rosewell and Mark Bridge talk about the new Zapp mobile payment scheme, Google's healthcare plans and an ultra-secure smartphone.

Also on the agenda are HP's new phablets, Jimmy Wales joining a UK MVNO, Apple's in-app purchases and plenty of research about tablets.