The Lumia 640 is one of the best picks for those looking for decent performance without going overboard. Come June and the phone will be among the initial models to be eligible for Windows 10 update. Pretty hardy despite its build, the phone is sleek at 141x72x8.8 mm dimensions and impresses with its 5-incher size laced with 1280×720, 294ppi TrueColor resolution. Let us not forget the IPS display that accounts for great screen colors and viewing angles. The Windows Phone 8.1 with Lumia Denim is not until the Windows 10 arrives and you can trust the Lumia 640 to multi tasks and handle apps. The 1.2GHz quad-core, Qualcomm Snapdragon 400 processor adds punch to the 1 GB RAM. As fr the camera, the 8 MP is decent with LED flash. On the other hand, the Microsoft Lumia 535 runs on the Snapdragon 200 CPU clocked at 1.2 GHz and flaunt 1 GB RAM. Therefore, working on it is not much fun. It also disappoints with the 5 MP camera that has Flash but fails as a result of quality. More so, the final nail in the Lumia 535 coffin is its 1905 MP battery that is a pity against the 2500 mAh we find on the Lumia 640.