The regular use of a mobile phone for several years could significantly increase the risk of developing tinnitus, according to a study that's been published in Occupational & Environmental Medicine. 100 patients with tinnitus were studied by researchers in Austria, along with 100 non-sufferers.

Revenue from non-voice mobile phone services will increase from $200 billion in 2009 to $340 billion (£223 billion) in 2014, according to new research from Informa Telecoms & Media. It says emerging markets will be the key driver of these mobile data services.

BT has formed a partnership with Arqiva and Detica to build a dedicated radio network designed for 'smart metering' in the UK. Existing GSM and GPRS technology has been used for most of the projects so far.

The UK Government has previously said it wants all homes to have smart meters by 2020, with Ofgem expected to publish more details this month.

The independent non-profit Symbian Developer Cooperative has launched today and immediately became a member of the Symbian Foundation. The new organisation is open to all individuals; participation is free of charge.

Anyone who joins Symbian DevCo as an 'associate' has the opportunity to stand for election to the Symbian Councils; this type of opportunity was previously only available to employees of member companies.

Microsoft's Windows Phone 7 operating system is now being released as a 'technical preview' to thousands of mobile developers. Until now, the software has only been tested within Microsoft.

Prototype phones from Asus, LG and Samsung are being sent to Microsoft developer partners, following the beta release of Windows Phone developer tools a week ago.