Facebook has announced its latest quarterly earnings figures and has also revealed details of the social network’s mobile-based users.

The number of monthly active users (MAUs) was up 15% year-on-year to 1.28 billion, with mobile MAUs up 34% to 1.01 billion.

We begin this week's podcast with a discussion about the Heartbleed bug, the effect it's having on the mobile industry and the wider issues for all internet users.

We're also talking about the future of BlackBerry, UK 4G coverage, new CEOs, Bluetooth connectivity, privacy concerns and the next generation of mobile processors.

Facebook and WhatsApp have received a letter from the US Federal Trade Commission reminding them about user privacy.

In February, Facebook announced that it was planning to acquire messaging service WhatsApp in a deal worth $16 billion (£9.6 billion).

Messaging was very much on the agenda at Mobile World Congress this year, following Facebook's announcement that it was planning to acquire WhatsApp in a 19 billion dollar deal. So if the future for this type of internet-based 'over the top' messaging service looks good, what does this mean for SMS?

To find out more, we spoke to Stacy Adams of mBlox to learn what was happening in the messaging world, to find out how SMS is being integrated with mobile apps - and to discover some of the other ways SMS was being used by businesses today.

This week's programme begins with some of the biggest news stories that came out of Mobile World Congress.

Iain, James and Mark then move on to the other headlines from the past few days, including Boeing's secret agent smartphone, Apple's plans for mobile in-car entertainment, a new structure for Telefonica and new technology for mobile payments.

Mark Bridge writes:

There are bad weeks... and there are BAD weeks. Blackberry had one of the latter. It all started so well. The company announced a new flagship phablet – the Z30 – and said it would be launching its BBM instant messaging service for iOS and Android handsets at the weekend.

Mark Bridge writes:

iPhone, iPhone. Two of ‘em, one dearer than the other but neither especially cheap. One with a 64-bit look-at-me-I’m-fast processor, the other much like an iPhone 5 with a coloured rear panel.

Mark Bridge writes:

Following Wednesday’s ‘State of the Union’ speech by EC President Jose Manuel Barroso, EC Vice-President Neelie Kroes has emphasised the urgency of changing the way telecoms companies operate across Europe.

Ms Kroes wants to cut red tape, end roaming charges, reduce call costs and introduce ‘net neutrality’ across Europe.

Mark Bridge writes:

So – we take a short break at the end of the August ‘silly season’ and one of the year’s biggest mobile-related rumours becomes fact. At least we’re back in time to report on the final stages of the Vodafone/Verizon deal. Yes, it looks as though Big Red will be picking up something like $130 billion for its 45% stake in Verizon Communications… possibly within the next few hours. Just don’t mention the tax, okay?

Mark Bridge writes:

In this week’s podcast we talked about a recent European study into call costs that had been highlighted by European Commission Vice President Neelie Kroes.

We agreed the headline was shocking - but also said there were potentially many other tariff factors that weren’t being compared.

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.