The lens is the Nokia Lumia 719

In the photo we can see Nokia's mobile phone for Asia and America.

A photo leaked about one of Nokia’s new products, the Lumia 719. According to current information, the dropped device will be very similar to the Lumia 710, but the manufacturer intends it for the Asian and American markets. Although the specification is not yet known, we can only know anything about the smartphone from rumors. Based on these, the designers dreamed of a 3,7-inch AMOLED display and 5 Megapixel optics for the Lumia 719. The device will be officially unveiled on March 28 at the Nokia event in China. Of course, the price is not yet known, and based on the information so far, we will certainly not be able to meet it in shops in Europe.

Source: gsmarena.com