I have purchaesd this xiaomi redmi 4 via amazon on february in this year at rs8, 999.still I am using this device.today I am going to review this honestly after my experience using it.in terms of sound reception and call quality I have not faced any issue till today.sound quality and call reception is good.in terms of user friendly it is also good.it runs on miui.design is quite good at this price range.it is slim and it has a metallic back finishit has 4100 mah massive battery which can easily manage 2 days for a moderate user.using this device I have not faced any laaging yet.but there is a little problem.the device gets hot while playing games.i have this 4 stars for some heating issue but it is ok.at last I want to say that it is value for money product.you will get a lot of feauters without spending a bomb.you should go for this device without any hesitation.