Sony Xperia E4 is best brand but it gives some problem while using this mobile product.
I have my own Sony xperia e4 , this is poor best but when installing some application like UC browser and use this one it wiil gets hang , and sometime it is doesnot work properly.
It is very expensive in mobile product because when it is compared to other brand it has very costly.
This mobile in indian currency ( rupees) its value is 11, 500rs when I am purchasing this product it has only 1 GB ram and 4 GB Internal memory. While purchasing Xiaomi ( MI) , it also rate is 11, 000 thousand indian currency but it have 3 GB ram and 16 GB internal memory.