Redmi note 4 is not just a phone it is so called the feel of heaven. Talking about sound quality though sound comes from only one speaker its sound is great may be other is for similarity of design purpose. Call Reception is awesome no cut of voice brilliant performance, and best part is user friendly, it is genuinely very user friendly even xiomi provides you a root warranty u can even use your own custom rom even provided by xiomi on xiomi website itself, style and design of the phone is fantastic it gives you a wonderful feel while using it it is various other features as well like hidden files storage, three finger swipe screen shots, one handed mode, dual torch lights, dual app feature, second space ( a feel of having two phones) . This phones looks well enough having wonderfull performance, now coming to cons we know every coin has two sides so there are some disadvantages as well, well screen size is 5.5 inches which looks smaller in comparison to mi max but its ok anyway, picture quality is only upto 4k we donot have ultra hd or 1080p, some of the updates are not so good but the latest one is nicely.
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So dude if u are planning to buy some phone under 15000 dont just think about this phone go for it baby go for it.
This phone is of 3 variants 2gb ram 3gb ram and 4gb ram I am using this 4 gb ram and is fantastic phone buy it dude go for it.