After using this phone for two years, here's my honest review: Camera quality: Daylight pictures are good and sharp whereas pictures taken at low light are not clear. Sound: Good for average users. Material quality: Good for phone at this price segment. Don't forget to use tempered glass. Easy for single handed use. Software: MIUI is known for it's simplicity and customization option. However if not properly configured, ads pop out nearly everywhere. Performance: Ideal for average use. Using processor heavy game like PUBG or NFS will result lagging. However opening multiple apps like Whatsapp/Facebook/Firefox never lagged/slowed system for me. After continuous use of internet/playing games for long time will heat it up. Battery: Good battery backup at this price segment, even the recent Redmi 6A has lower battery than 4A. However after one year of use this phone lasted roughly 18 hours with full charge and average use; initially it used to last 1.5 days.