The Billmonitor.com price comparison website says over three-quarters of UK mobile phone customers are on the wrong mobile tariffs, which is costing those people almost £5 million annually. It's analysed over 28,000 mobile phone bills and has compared than against over 8.5 million tariff options from O2, Orange, Vodafone and T-Mobile.

Billmonitor's calculations show that those 76% of UK mobile customers on the wrong tariffs are wasting an average of £194.71 each per year.

Mark Bridge writes:

We head into the weekend with the News of the World admitting voicemail hacking was more widespread than previously thought. Mobile networks had already made it much harder to access voicemail remotely… and now the NotW is saying sorry and preparing to pay compensation.

News International, which owns the News of the World newspaper, has admitted liability in a number of 'voicemail hacking' cases. Several claimants have been offered an apology; the company is also setting up a compensation fund to pay claims.

Allegations of unauthorised access to mobile phone voicemail accounts first came to light in 2006, when a News of the World reporter was arrested.

Front-line police officers 'on the beat' will soon only need a few seconds to check whether a mobile phone has been stolen. A new process developed by the National Policing Improvement Agency comes into effect on Monday, giving officers the ability to directly access the National Mobile Phone Register from a handheld device.

Around 54,000 officers across the UK currently use handheld computers in their work.

10 million online consumers in the UK made a transaction using a mobile device last year, according to the results of a survey commissioned by customer behaviour analysis business Tealeaf.

Shopping was the most popular m-commerce activity, although financial transactions, travel bookings and insurance payments were also popular. The average consumer completed 4.4 mobile transactions per month.