From the front, it appears to show a soft rectangle shape, however the rounded corners and high gloss surface of its casing absolutely putting some pep and pop to the design – adequate to make it an aesthetically enticing smartphone. At a glimpse, the Microsoft Lumia 640 is virtually identical from the Nokia Lumia 630/635, however the 640’s clear plastic back offers it a fresher feel.

Taking a fast peek around the phone, it’s clearly sporting all the normal buttons and ports discovered on any smartphone– like its microUSB port, 3.5 mm earphone jack, microphone, volume controls, and power button. The back cover of the Lumia 640 can be quickly eliminated to disclose the phone’s exchangeable 2500mAh battery in addition to a micro-SIM and microSD slots.

The Lumia 640 goes into the fray with a 5-inch 720 x 1280-resolution (294ppi) IPS LCD screen with quality that would be outstanding on a phone costing two times the cost. Although small text is still noticeable from a typical watching range, it plainly does not have the sharpness, information, and strength that other greater resolution screens produce. The screen does a good service of representing colours properly, preventing the color casting that we’ve seen on other phones such as the really low-cost Lumia 435. Other elements about the screen expose that it’s really a very well-crafted affair generally. Its best 352 nit luminance does not make it an extremely great prospect for presence under brilliant conditions.