Xiaomi Redmi 4 is the company's latest model in the sub-Rs. 10,000 segment. Unlike premium smartphones, budget phones seem to have shorter life cycles, and the Redmi series is the perfect example of this. The Xiaomi Redmi 3S(and Redmi 3S Prime) launched in India in August last year, and the company claims that they are the highest selling smartphones in the online segment, having sold four million units in just nine months. Despite this, the all-new Xiaomi Redmi 4 will soon replace the popular Redmi 3S (and Redmi 3S Prime). Xiaomi has so far seen a string of successes with its Redmi range, with most models finding place in our periodic lists of the best budget phones. This new Xiaomi Redmi 4 will not only have to take on the competition, but also live up to its predecessor in a lot of ways, and it certainly seems like an improvement when it comes to specifications.