Some Sony phones are guaranteed to get the new OS, but a number of Xperias still face uncertain KitKat futures.
Tech deals, prizes and latest news
Get the best tech deals, reviews, product advice, competitions, unmissable tech news and more!
Windows 10: release date, price, news and features
Why you should avoid hotel Wi-Fi like the plague
10 best mobile phones in the world today
iPhone 7 release date, news and rumors
Apple Watch: a runner's review