Microsoft has unveiled a new line of smartphones running its Windows software.
Microsoft is hoping that the new phones, from handset makers such as Samsung, LG and HTC, will help it regain market share from Apple’s iPhone and Google’s Android system.
Microsoft’s share of the global smartphone market is believed to have fallen to just five percent from nine percent a year ago.
Google’s Android system has a 17 percent market share, jumping from only two percent a year ago.
Some analysts say the new handsets represent Microsoft’s last chance to catch up with its rivals.
They are not expected to appear in stores for a month, so their success may not be judged until the new year.