I just bought JIAYU G3S for my younger sister ,a chinese brand phone,and it has a great value for money in my view.But a problem occured,when i tried to connect it with my house wifi,result was always a failure,even though i restore factory settings ,still impossible ,do you guys ever use this brand phone like me? or some of you have got any solutions?i am wondering whether this problem is a common problem for chinese phones.