I buy the redmi note 4 before 2 months. I said today my redmi note 4 experience, when I start to use redmi note 4 then its very smoothly and faster. But now I update my redmi note 4 in 7.0 nought version so now my phon not work smoothly and faster, so please solve this issue. ??????. And now I go to redmi care but there are many people and very long line, one of my frd give his redmi note 4 to care to repair but care not reply properly, and I suggest you that please increase your help center and redmi care so more peole attract to ur redmi note 4.and overall all feature are very good.