The Lumia 620 will cost an estimated $250 contract free
Users of Windows Phone 8 smartphones made by Nokia and HTC have complained about the reboots
While Microsoft's app store still offers far fewer apps than Apple or Google, hitting 20,000 is an important milestone toward its goal of 100,000 within three months of Windows 8's launch.
Nokia's latest handset makes the most of Windows Phone 8.
Nokia has launched a new version of its Transport application, which presents directions in a new way and counts down to when the bus or train will leave.
Samsung outsold Nokia and Apple in worldwide mobile device sales in the third quarter this year, according to a Gartner report this week.