My one-month old Note3 is rather unstsble with WiFi, both at home and at work. Loses WiFi quite frequently, then it reconnects. There are three tablets in the house snd three other mobiles, but none of them has this problem.
I have the impression it wasn't like this in the very first week. It could be one of the applications I installed and uninstalled.
I tried the usual tricks. Turned off the atomatic switch between WiFi an Mobile. Turned off the location service to look for WiFis even ehen WiFi is off. Made WiFi never to sleep.
I even tried to switch off Mobile Data. It loses WiFi just as often, but it switches back faster, because it doesn't waste time with mobile reception. Still, the problem remains.
I guess I have to do a factory reset. I wonder if anyone else had the same experience.