The front and rear of the Nokia Lumia 730, codenamed Superman, were captured in several realistic shots posted by WPCentral.
The device will place emphasis on selfies since it is expected to carry a front camera sensor of 5 megapixels.
The images also show a new software named Lumia Debian Red, which could be the new update to Windows Phone 8.
The mid-range Nokia Lumia 730 is expected to operate under the Windows Phone 8.1 system and be equipped with a 1.2GHz quad-core processor.
The phone is also said to boast 1GB of RAM, 8GB internal storage, a 2,000mAh battery and a 6.5-megapixel rear camera.