Microsoft Lumia 640 mobile was launched in February 2015. The phone comes with a 5.00-inch touchscreen display offering a resolution of 720x1280 pixels at a pixel density of 294 pixels per inch (ppi).
HP ProBook 640 is a Windows 10 laptop with a 14.00-inch display that has a resolution of 1920x1080 pixels. It is powered by a Core i5 processor and it comes with 8GB of RAM. The HP ProBook 640 packs ...