O2 says its 4G network now reaches 41% of the UK population outdoors and a third of the population indoors.
Currently 191 towns and cities have O2 4G coverage.
BlackBerry CEO John Chen has said the company is “not leaving the Devices business”.
He was responding to a Reuters report that quoted him as saying “if I cannot make money on handsets, I will not be in the handset business”.
Motorola Mobility has named Rick Osterloh as its new President and Chief Operating Officer.
He replaces Dennis Woodside, who left his CEO role earlier this year to join Dropbox.
Figures released at the Bluetooth World 2014 conference show that 96% of all mobile phones - not just smartphones - are expected to include Bluetooth wireless technology by 2018.
That compares with 90% in 2013.
Podcast - 9th April 2014
This week's podcast starts with news from Microsoft about an update to its Windows Phone platform and a cost-free OS offer to hardware manufacturers.
There's also a new flagship smartphone from Nokia, a roaming announcement from the European Parliament, a UK virtual mobile network from The Co-operative Group, a change at the top for Mozilla, retail expansion for Vodafone and an awkward end to BlackBerry's relationship with T-Mobile in the USA.