Pretty sure this is a straight up scam, the RAM changes depending on which site you find it on with none of them showing 20GB of actual RAM, and the website for 'doogee' doesn't work
It's not i've bought two of them years ago because they have a decent spec rugged phone. The s60 was bulletproof and lasted ages and even a drop from standing height on concrete. I upgraded to a later model (i think s90) and that was a piece of shit. The quality control is crap, don't expect software updates but if you get a good one the hardware is great. So not a scam but i would stay away.