I buy mi3s about 6 months ago after 3 months the phone gets slower and slower the sound quality is good but not the best in the market.
The camera quality is worst focusing is very slow after the image is saved in the gallery the image quality is reduced.
Ram management is the weekest point of this device after using 3, 4 apps phones gets slow and start laging and then we have to clear it so that the phone can be used properly.
And the large part of the storage is used by the device application, we gets only 9 gb from 16 GB.