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 Windle, head of marketing at OpenCloud, predicts that this year’s reduction in the number of traditional telecoms operators in some countries will provide an opportunity for other operators to innovate and capture market share in 2016.

He says next year will be a year of rapid change for telecoms… whether it’s MVNO disruption, competitive tariff pricing or simply defence from the ‘dark art’ of hacking.

Mark Bridge writes:

The most memorable moments in life often go unrecorded. You don't have your camera in your hands. Your finger is still hovering over the 'pause' button on your audio recorder. Or you were simply too busy experiencing whatever was happening. It's all about the one that got away.

That's where Kapture can help.

Mark Bridge writes:

James Rosewell shows me a colourful roll of paper that's the width of an iPhone but well over three metres long. When I look closer, I can see it's a printed copy of the Wall Street Journal's mobile website. That's a lot of scrolling to do... and a pretty unfriendly user experience for anyone reading the news online. Why does it work so badly?

We have a varied collection of mobile industry news stories in this week's podcast, including new rules affecting airline passengers with smartphones.

We also talk about BlackBerry giving up its European research centre, Vodafone installing fibre-optic broadband, Samsung's profits, spending on mobile advertising, M2M adoption and WiFi on trains.

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 covers the launch of the first Amazon smartphone and the introduction of Google Glass to the UK.

We also talk about new WiFi-powered voice services from EE and Three, plans to reduce mobile 'black spots', BlackBerry's app partnership, smartphone theft, 4G innovation... and rechargeable trousers.

We open this week's podcast with news about the European Commission and South Korea working together on 5G mobile technology.

There's a quick look at Samsung's new tablet, some acquisition deals to talk about, a tax investigation, research into wearable devices and plenty of other mobile industry news as well.

This week's podcast begins with Ofcom's plans to cut the wholesale cost of inter-network mobile phone calls. But what benefit will consumers see?

Iain, James and Mark then move on to discuss luxury smartphones, a new handset on the high street, mobile broadband for aircraft passengers, government monitoring, the growth of smartphones - and 4G-equipped donkeys.