Im having same problem, im 10m from the router. My wifi wil be fine one moment, and the next it drops to maybe 1 or 2 bars. If I put the device on my lap or a table or something and only interact by touching the screen without physically holding the fone, then my wifi disappears completely, the moment I pick it up again and hold in my hand, wifi connects again with almost full signal bars and starts dropping again. My GF has Galaxy J7, and we have Mobicell Echo 10.1 Tablet, both these devices has full wifi signal all the time. Really getting frustrated. The Echo is worth R1000, Galaxy J7 is worth R4000, and my Mate 8 is worth R16000!!! How does such a flagship device that I paid 2 months of my salary for, perform worse than knockoff and replica devices??