Doogee S59 is a despicable piece of junk
I own a Doogee S59 "pro" (although there's nothing "professional" about it), and I regret that purchase every single day. Ok, the battery has a long life. But it makes the phone so heavy I can hardly carry it around in a pocket. The interface is very poorly designed, leading to difficulties in accessing the most basic controls. But what makes this phone particularly awful, in my opinion, is the constant unwanted volume fluctuations for media, phone conversation and ringtone. It really hate this piece of crap and I will never, ever buy anything again from this company.