Since Microsoft dropped its licensing fees for Windows Phone earlier this year, a wide range of manufacturers that had previously avoided the platform have flocked towards it. A long list of brands - including Lenovo, LG, ZTE, Prestigio, Blu, Fly, Gionee, InFocus, Karbonn, Micromax and more - will soon be releasing new Windows Phones, and some have already unveiled their upcoming devices.

One such manufacturer is Yezz, which revealed its first ever Windows Phone at the Computex trade show back in June. That device is called the Billy 4.7, which the company named in honor of Bill Gates (!).

Yezz claims that the device will be the world's "slimmest and lightest Windows mobile" (oops), and it will be making its first full public appearance at IFA in Berlin later this week. The company hasn't yet revealed exactly how light the handset will be, but at 7.2mm-thick, it won't be any thinner than XOLO's Win Q900s, which weighs just 100g, and is remarkably similar to the Billy 4.7 (and may well be based on the same ODM reference design).

The Billy 4.7's specs include:

Quad-core 1.2GHz Snapdragon processor (curiously identified as a 'Snapdragon S2' on the manufacturer's website, but we understand it will actually be a Snapdragon 200)

1GB RAM

8GB onboard storage (plus microSD support up to 128GB)

4.7-inch HD (1280x720px) IPS LCD, protected by Asahi Dragontrail Glass

8MP rear camera (not 13.1MP as Microsoft previously stated)

2MP front-facing camera

Dual-SIM

The device is expected to go on sale in Europe, Latin America and the United States later this year, priced around $249 USD / €229 EUR.

It will be joined by a little brother known as the Billy 4, which will cost $139 / €129, and will feature:

Quad-core 1.2GHz Snapdragon processor

512MB RAM

4GB onboard storage (plus microSD support up to 128GB)

4-inch WVGA (800x480px) display

8MP rear camera

1.3MP front-facing camera

Dual-SIM

Interchangeable covers, with eight colour options

Yezz will also be showing off new feature phones, Android 4G handsets and at least one device with an octa-core processor at IFA.

Images via Yezz