We begin this week's podcast with updates on two topics we discussed last week: the potential purchase of a UK mobile network by BT - and the crowd-funded Jolla Tablet.

After that we talk about the GSMA's reaction to national roaming, the potential death of the landline, a new threat to Google, management changes and advertising for 4G data.

Mobile ticket and payment specialist Masabi has appointed Brian Zanghi as its Chief Executive Officer and President. He replaces co-founder Ben Whitaker, who will remain with the company as its new Head of Innovation.

Masabi is best known for the mobile ticketing solution it supplies to railways in the UK and the USA.

We have something for everyone in this week's podcast. There's bad news as Samba Mobile closes, bad news as Apple and Samsung suffer product faults... and bad news as wearable devices are criticised for the poor user experience they offer.

Yet there's plenty of good news as well, including the launch of a new UK mobile payment service.

Mobile ticketing is coming to river buses in London, enabling customers to pay for their trip via any compatible smartphone.

Thames Clippers, which runs boat services that serve around three million commuters and visitors every year, has signed a five-year agreement with London-based Masabi.

Mobile transport ticketing specialist Masabi has developed an all-in-one ticket app for rail operator First Great Western.

Customers can download the mobile application to a compatible smartphone or tablet and buy tickets for use with any UK train operator.

James Rosewell writes:

I noticed a new phenomenon at Mobile World Congress this year: Beer O’Clock. Come 5pm Monday through Wednesday, companies with larger booths would break out the Cerveza, Vino, Cava and a small number of Orange juices. All very sociable and fun… until the music started.

Mark Bridge writes:

So, that’s another Mobile World Congress in the bag. Yes, it was bigger than ever. Just like last year. Just like the year before, too.

Mark Bridge writes:

I was ready to poke fun at IBM for its sponsored graffiti wall at Mobile World Congress this year. Graffiti and IBM don't have a comfortable history, as anyone who remembers the Linux campaign from 2001 will tell you.

Mark Bridge writes:

Some companies have saved their big announcements for the week of Mobile World Congress. Samsung and Nokia, for example. Others have issued a press release in advance.

Iain Graham writes:

Vodafone’s admission last week that ‘some customers’ may have been experiencing issues with mobile services came three weeks late for me. I’ve been having my own ongoing battle with the network since the beginning of the month.

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.