Price comparison website moneysupermarket.com has calculated that Britons are wasting 85,000 tonnes of CO2 on overcharging their mobile phones every year; the equivalent of an electricity bill costing almost £40 million.

49% of mobile users under twenty admitting to overcharging their mobiles by an average of 7.3 hours every time; the national average is 13% of people overcharging by an average of eight hours. The company points out that the average phone only takes about 2-3 hours to charge up.

Sony Ericsson has announced a new strategy designed to reduce the environmental impact of its products. Not only has it committed to reducing CO² emissions by 20% across internal operations by 2015 – and reducing greenhouse gas emissions by 15%from the lifecycle of its products within the same timeframe – it’s also introducing a range of GreenHeart products. The Sony Ericsson C901 GreenHeart and the Sony Ericsson Naite are new handsets that include an e-manual to reduce paper usage, smaller packaging, recycled plastics and a low-power charger.

Vodafone is marking the launch of DRM-free downloads on its UK network by designating 5th June as 'Free Music Friday'. Eight free music tracks will be available to Vodafone customers tomorrow.

Vodafone’s decision to remove Digital Rights Management from downloads on the Vodafone Music Store means that customers can copy music between their music phones, PCs and MP3 players (subject to standard copyright rules, naturally). 350,000 unlocked tracks will initially be available, with over a million planned by the end of the summer. Prices for downloads cost from 49p per track and £7.99 per album. Customers who’ve previously bought DRM-locked music will be able to download the unlocked tracks free.