I love my device xolo a500s this is my first device at times I cannot seen like this device this runs on 4.4.2. so good features easy to use. The display is 4 inch TFT capacitive with 480 x 800 pixels resolution gives around~233 ppi pixel density and its not very bright display and color reproduction is good but not great, viewing angles of the display are not very wide as it is TFT.
The in built memory of the device is 4 Gb out of which around 1.45Gb available to the user for apps and storing other data, you also have the option to expand the storage with SD card, you can also install apps directly on the SD card as well, after selecting SD Card as default write disk. Battery backup is just average as it will last upto 1 day on moderate usage if you don’t play a lot of games and watch videos much, but with heavy usage you will not get more than 7-8 hours of usage.