btw, i bought this tplink wifi because a) it's effing FK discount season ! (got a whopping 40 bucks off on it) and b) my existing wifi dongle is a G. i'd need like a 5 meter usb cable to reach the phone in the other room, and then no telling how the usb performance would be affected. so NOT being able to (practically) usb tether is my problem, opposite of OP !
in other thoughts, jio on 1800mhz, phone is in the exact same position and orientation, in both rooms, just that the 'good' room is about 10 feet west of the 'bad' (pc) room. huge difference in signal quality and strength. makes no sense (well, reflections etc maybe)