This week's podcast includes news of two more UK virtual networks, Nokia's property deal, a break-up for ST-Ericsson and Huawei's new partnership with Three.

We also look at WiFi hotspots in London taxis, Ofcom's research into customer service, pre-loaded security software on Android smartphones and a man whose iPhone may have cost him a job.

Machine-to-machine (M2M) communication is offering mobile networks an unrivalled opportunity to dramatically increase their connection figures. At the moment, over 100 million M2M-enabled devices - from vending machines to smoke alarms - are providing information automatically, with mobile networks carrying the majority of this traffic

Jürgen Hase, Vice President of the M2M Competence Center at Deutsche Telekom and Chairman of the M2M Alliance, offers his M2M predictions for 2013.

Informa Telecoms & Media expects smartphone sales to split into two main segments during the next few years: low-end devices priced below $150 (£93) and high-end devices priced above $250 (£155).

Last year, higher-spec devices accounted for 85% of the smartphone market but their market share is expected to fall to 33% in 2017.

Twitter has added the option of eight special-effect photo filters to its iPhone and Android applications.

The announcement comes shortly after photo sharing service Instagram removed a feature that enabled users’ photographs to automatically preview within a ‘Tweet’.

Barnes & Noble’s NOOK Media subsidiary says its NOOK Video service is now available in the UK for customers who have a NOOK HD or NOOK HD+ tablet. It means that a wide variety of films and TV shows are available to stream or download over WiFi.

NOOK ebook readers and tablets launched in the UK earlier this year, challenging Amazon’s Kindle devices.