Over the past year, the number of rugged smartphones arriving from Chinese manufacturers has risen considerably with no less than 12 players (deep breath: Homtom, AGM, Nomu, Ulefone, Jesy, No.1, Zoji, Three Proofings, Ken Xin Da, Snopow, VChok and Blackview) currently fielding IP68-rated models.We first came across Blackview last year when the company...