Amazing smartphone redmi 3s prime highest sell the world in this year unique mobile battery backup is very very good internet use with the battery minimum 11 hours still I am already using redmi 3s prime battery power bank 4100 mah otherwise well full features I am using this phone last 7month no problem faced 3gb ram 16gb storage all feature is very well no available in offline market only available online .i love xiaomi redmi 3s prime