A leaked photo of the Lumia 510 has surfaced, and luckily, it is enough to reveal more on the device. Expecting more from a leak won’t be that fair. This unannounced member from the house of Nokia is secretly on the way to flood the entry-level smartphone market.

It is expected to have a 4-inch WVGA resolution display, 4 GB internal memory and just 256 MB RAM. This budget-conscious Windows Phone is still veiled in mystery.

Some reports indicate that it runs an 800 MHz Qualcomm Scorpion CPU. The gadget is to launch with Windows Phone 7.8.

Why not Windows Phone 8? Well, it’s still a speculation. Microsoft Senior Marketing Manager for Windows Phone had recently said that when you pull out that Lumia out of your pocket after receiving Windows Phone 7.8 update, it will look and feel like a Windows Phone 8 device.

Is it enough to say that Lumia 510 comes with 7.8? We hear the device would house a 5 megapixel rear camera. But the leaked photo just shows the front. So we just have to believe what we see.

The price is rumored to be $150, which can make it affordable to many pockets. Yet the competition it has to face with the low budget smartphones already on the market will be high. The handy handset is expected to be launched around the glob by the start of 2013.