UK communications regulator Ofcom has published an online guide to help customers unlock their mobile phones.

Mobile network operators may electronically ‘lock’ mobile phones to their network when customers buy the phone. It’s necessary to unlock these phones before they can be used with a different network provider... and this is sometimes chargeable.

New research published by UK communications regulator Ofcom shows that signing up to the Telephone Preference Service reduces the number of unsolicited ‘live’ marketing or sales calls by around a third.

Organisations are legally required to ensure they don’t call numbers registered on the TPS unless they have the consumer’s consent to contact them.

BT has won a Supreme Court ruling that could see it reclaiming millions of pounds from UK mobile network operators.

The case dates back to 2009, when BT announced new termination rates for telephone numbers that began with 08. These rates varied depending on the amount that the originating network charged the caller.

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.

Ofcom has published the volume of complaints made against mobile phone network operators, fixed-line phone providers, broadband companies and pay TV services between January and March 2014.

It’s the regulator’s thirteenth quarterly report of complaint data.