I bought 4A from the market and believe me this is one of the best phone I have ever had. The sound is well clear and loud. very easy to operate with one hand.style and design both are good non-removable battery make it slim and cool. It has Xiaomi ui8 which is I think an upgrade to ui9. 4A gives you a good feel it has plastics body but looks like metal body which is durable. one of the biggest point is this phone is value for money at this price range I think you can get like this kind of product.