That means 500 million GPS phones walking around in cities and towns, creating a powerful two-way sensor network that Nokia and others can tap for selling targeted advertising, friend-finder services and city guides.

FORBES: Nokia Redraws The Map

Imaging-wise, and yes, it's still all about the camera with Nokia, there's the same 8.7-megapixel camera sensor from the 920 model, although Nokia says it's made countless improvements to noise-reduction algorithms and other inner workings.

ENGADGET

Nokia has added a front-facing VGA camera to this model (a first for an entry-level Nokia Windows Phone), while a 5-megapixel sensor and flash are centered on the back.

ENGADGET: Nokia Lumia 620 review: precisely what an entry-level smartphone should be