My biggest mistake in life is to buy this mobile Karbonn A50s . There is nothing good in this mobile . Worst battery backup ever . Even I have to change battery of mobile two times . Internal memory is too low . Front and Rear Cameras are of cheap quality . Takes too much time in opening and processing . Hanging is common in this mobile . Look is also not that good . Price is too high for these type of bad qualities in the mobile. These are some points regarding the phone , but there are many more . I prefer you guys , never buy this phone.