Nokia has unveiled its first phone to run on Google's Android operating system rather than Microsoft's competing Windows Phone software.
The Nokia X, unveiled on the first morning of the Mobile World Congress trade show in Barcelona, is a low-cost handset targeted at emerging markets.
Nokia will bin many of the Google services that come with Android and instead emphasise Microsoft apps including Bing search, Skype, and OneDrive file storage.
Because it uses Android, it will be able to run most Android apps.
However, app developers may have to tweak some of their software because the phone doesn't have key Google services.
Stephen Elop, executive vice president of Nokia's Devices and Services, said the company wanted to "connect the next billion people".
Once the No. 1 maker of mobile phones, Nokia has been struggling to keep up with the iPhone and devices running Android.
And even as competition intensifies for high-end smartphones such as the Xperia Z series, Nokia has been hit by competition from cheaper mobile phones made by Chinese and other Asian companies.
The Nokia X will sell for 89 euros ($A137.12) immediately in Europe, Asia, Africa, the Middle East and Latin America.
Nokia is understood to be considering whether to bring the phone to Australia.
The company also introduced two cheaper phones - the Nokia 220 and the Asha 230, which will cost 29 euros ($A44.68) and 45 euros ($A69.33) respectively.
* Paddy Wood travelled to Barcelona as a guest of Samsung.
