The Microsoft Lumia 640 XL is one of Miscrosoft's recently announced Lumias and it's also available as a Dual SIM model, which we're reviewing. It's the best equipped smartphone in the Lumia 640 series - it packs a massive 5.7" screen and a 13MP camera...
Source: http://www.gsmarena.com/microsoft_lumia_640_xl-review-1250.php
