The mid-range smartphone segment became more populated this year, giving plenty of options to consumers.... From premium designs to versatile imaging, mid-range smartphones launched this year were full of surprises and technology innovations. Business Standard lists top five best sub-Rs 30, 000 smartphones that were launched in 2021: This smartphone was the first to launch after OnePlus-OPPO integration.... Therefore, it offered the best of OnePlus and OPPO rolled in to one....