At first I must say about this phone is the price range for this configuration is not so competative than other brands. There are two most common issue are coming with this phone.
The touch not works smoothly after a certain used period. You have to click twice thrice to command any option.
And the most bad thing I dislike about this phone is Battery problem. Battery fluency is not as promising. Basically when I used this phone for 3 to 4 months then I observed that the battery backup is not so good. You can use the full charged battery only for 1.5 hrs continuesly. And this is so bad for this age smartphones