My new Galaxy S5 won't connect to my regular home WiFi network. My old S3 connects just fine. I can sit them side by side and the S3 will connect while the S4 won't. All set up is the same. I use WPA2-PSK security. The S5 just shows 'saved, secured'. However, I also have a Powerline set up to boost my wireless network to the other end of the house. The S5 will connect to the Powerline when I walk to the back of the house, but when I sit in the computer room where my router broadcasts from, I can't connect to it. We just replaced 3 phones in the house and none will connect to regular WiFi network anymore, they will only connect to the Powerline (two Galaxy S5 and one iPhone 5S). Only the old Galaxy S3 will connect to both regular wireless router and the Powerline. The problem with that is the Powerline covers half the house while the regular WiFi covers that other so I can't connect WiFi throughout the entire house anymore.