Redmi note 4 is a budget phone, the 4gb version will get 64gb inbuilt storage. The sound quality is not that loud but descent sound effect. The gaming performance is quit amazing no lags occured while playing high end games like nova 3 & ashpalt with high graphics. The build quality is similar to that of mi note 5 which feels premium @ this price range the speaker is at the bottom. It has 2.5D curve glass which makes it best at the time of watching videos, it has hybrid sim slot but no issue with 64gb version personally I feel the grey colour variant looks fab. The camera is quite good but at low light it does struggle a lot take good photos, the main part of the phone is performance and its great battery life. So @ this price range this phone is amazing option.