We're celebrating the seventh anniversary of The Fonecast this month with a handful of our favourite interviews from the early years.

You'll hear Ben Whitaker from Masabi, Truphone co-founder James Tagg, former Olympic athlete Steve Backley OBE and online banking pioneer Steve Townend.

Truphone is a pioneer of internet calling via WiFi - and it's recently announced a new service that aims to integrate GSM calls with its VoIP app.

In this special programme we interview Truphone co-founder and CTO James Tagg about the company's plans.

There are many mobile boundaries being blurred in this week's podcast.

Topics include Truphone's combined WiFi and mobile service, Skype's move to direct mobile billing, the rise of 4G and an Android-controlled satellite.

Mark Bridge writes:

Mobile networks aren’t what they used to be. As last week’s interview with Vince Russell of The Cloud demonstrated, more and more customers are relying on WiFi to augment their mobile data service.

Truphone is now planning to do exactly the same with voice calls and text messages by linking its mobile network with WiFi for even wider coverage.

UK telecoms service Truphone, which runs a mobile Voice-over-IP service and a mobile virtual network operation, has announced its intention to create a new service that combines the benefits of GSM with internet calling.

Truphone+ will enable customers without GSM coverage to make and receive calls on their ‘mobile number’ via a WiFi connection.

Mark Bridge writes:

In the past five years, what started as an advertising message - “there’s an app for that” - has become a challenge to developers. It’s become part of 21st century culture. And it’s become an totem for journalists to pin their most outrageous app-based stories to.

Roadroid doesn’t need the attention-grabbing headlines.

Mark Bridge writes:

What would you say to a tiny little device that enabled you to recharge your smartphone almost anywhere, whenever you wanted?

This is pretty much what a US-based company called Nomad is promising. In fact, they sent me two of their latest products to try.

Mark Bridge writes:

Every week we produce a half-hour podcast that covers all the biggest news headlines for the UK mobile phone industry.

Thanks to a special offer from Scribie.com, we can also offer a transcription of last week’s programme.

Mark Bridge writes:

Apple kicked off its 2014 Worldwide Developers Conference (WWDC) last week with an announcement about the forthcoming iOS 8 operating system for iPhone, iPad and iPod touch. There was some catching up, some innovation and a couple of new services designed to work with home automation and health/fitness devices. What’s Tim Cook’s plan? We’ll have to wait and see.

Mark Bridge writes:

Bitcoin, as Wikipedia tells me, is a peer-to-peer payment system introduced as open-source software in 2009. It’s a ‘virtual currency’ that can be used for transferring money and for buying products or services, although only if your chosen retailer accepts Bitcoin.

Iain Graham, James Rosewell and Mark Bridge return to review their mobile industry predictions from last year. Which mergers, partnerships and developments did they forecast correctly... and which didn’t work out as planned?

Later in the programme, the team anticipates some of the topics that will be hitting the headlines during 2016.

Mark Bridge learns about the mobile technology trends at Mobile World Congress 2015 by chatting to James Rosewell of 51Degrees, Dr Kevin Curran from the IEEE and Chris Millington of Doro.

They talk about wearable devices, wireless charging, mobile operating systems and much more... including some of their favourite products from the exhibition.

We're taking a look back at the biggest mobile industry news stories from February 2015, including allegations that the UK's security service tried to breach SIM card security by hacking into one of the world's biggest SIM producers.

We also talk about the planned BT and EE merger, the creation of two new UK virtual networks, some acquisitions in the mobile payment arena and a new Ubuntu smartphone.

In today's programme Mark Bridge talks to Chris Millington, who's Managing Director for Doro UK and Ireland.

They discuss the state of mobile retailing in the UK, the future of wearable devices and - as you might expect - smartphones for seniors.

We're back with a month of mobile industry news, including takeover talks and takeover rumours. O2 and Three are said to be discussing a merger... but is there any truth in the suggestions that BlackBerry could be up for grabs?

We also discuss Apple's record-breaking quarterly figures, the highlights of CES and the launch of Microsoft Windows 10, as well as saying farewell to the current version of Google Glass.