I made tests with my laptop and cellphone: same result. I downloaded "Wifi analyzer" on google store. The signal is at maximum near the router and at 70% in the other room about 12 meters (where I...

Model : Hardware Version : Not Clear Firmware Version : ISP : I have this tl-WR740N router and it worked great for months with a range of 20 meters, but now it is down to 1 or 2 meters. I tried to...