Mobile phone customers from the UK have been warned about the increasing cost of making calls in Europe.

The UK's post-Brexit trade deal with the EU opened the door for mobile operators to reintroduce 'roaming' charges when customers travel abroad.

UK communications regulator Ofcom has fined O2 £150,000 for failing to provide accurate and complete information during an investigation. It follows a £10.5 million fine for the network earlier this year.

Ofcom, the UK's communications regulator, has published its annual customer satisfaction ratings for mobile networks.

Two of the world's communications giants have agreed to merge their UK operations. Liberty Global will combine its Virgin Media UK broadband network with Telefonica's O2 UK mobile business.

Entertainment company Sky has announced what it’s calling “the UK's most flexible mobile service”.

Customers with another Sky service will be able to sign up for Sky Mobile from mid-December, with a full launch expected in early 2017.

Mark Bridge writes:

Welcome to TheFonecast.com for this week’s Carnival of the Mobilists, an itinerant online publication that contains the best mobile-focussed writing from the previous seven days.

The summer holidays may have reduced the quantity of online commentary for Carnival #234… but the quality remains unaffected.

In recent months there’s been a lot of talk about smart metering and the wider subject of machine-to-machine communications. With well over 100% penetration of mobile phones in the UK, the promise of machines exchanging information over the mobile network offers operators a new opportunity for growth.

To explain more about the technology and the potential, we invited Ross Catley to join us for this week’s edition of The Fonecast. Ross has worked in the utility & telecommunications industries and is now a consultant who advises on smart metering.

Here’s an edited transcript of our interview.

James Rosewell writes:

Mobile network operators have responded en-masse to the success of Apple’s App Store. Apple should be very concerned. The Wholesale Application Community (WAC) has been formed as a corporate entity today with representation from AT&T, China Mobile, Deutsche Telekom, France Telecom, GSMA, KT Corporation, NTT DOCOMO, SK Telecom, Smart Communications, SOFTBANK MOBILE Corp., Telecom Italia, Telefónica, Telekom Austria Group, Telenor, Verizon and Vodafone. Not many major Mobile Network Operators (MNO) are missing from the list.

Mark Bridge writes:

They were a proud race. Proud of their individuality. Proud of the simple yet high-tech environment they inhabited.

But their population wasn’t growing as quickly as it had. They weren’t dying out – far from it, because they were committed to the cause – but there weren’t as many bright new faces as there’d been before. And now the Others were moving closer.

Yes, they’d done their best to resist the Others. They’d tried moving into new areas; not running away but expanding. It seemed to work. A new generation – a new race, some said – had been born. Different, yet the same. So why did they still feel as though the Others were getting dangerously close?

That’s not the opening of the worst science-fiction novel of all time. It’s the place where some people think Apple finds itself at the moment.

Mark Bridge writes:

Mention 'anonymity' to anyone these days and it's pretty likely they'll start talking about Facebook. Maybe Google Street View, maybe RF chips in passports... but probably Facebook.

This 'over sharing' of personal information is a far cry from the situation a few years ago. Once, no-one on the internet really admitted who they were. That New Yorker cartoon - "Nobody knows you're a dog" - wasn't far off the truth. You couldn't tell a dungeonmaster from a librarian when they were online.

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.