Every new Redmi has a seemingly impossible task - be a better bang for your buck than the previous one. And cheaper, or worst-case scenario - same price. If it were any other maker, it would have been a hard no can do. But not Xiaomi. It keeps doing it against the odds and here is the Redmi S2 to prove it.
Source: https://www.gsmarena.com/xiaomi_redmi_s2_y2-review-1781.php