It seemed like for the first week or so of having my Note 4, I had zero problems with being connected to WiFi, but now any that I had saved (home and 2 at work), I just keep getting an authentication error and I have to delete the connection, then re-add it. I have an S5 from Verizon that stays connected everywhere and same with my coworkers and wife's phone, so I don't see that it is the router. Anyone else having any problems staying connected to WiFi or just me?