Asus was one of the first companies to kick off the low-cost smartphone war in India way back in 2014 with the original Zenfone 4, 5, and 6, which were all extremely popular. Can the new ZenFone Max Pro M1 take on the likes of Xiaomi Redmi Note 5 Pro and help Asus make a dent in the sub-Rs 15,000 price segment? Here's our review of the ZenFone Max Pro M1.