I have an Asus TM AC-1900 WiFi router at home. We have a Nexus 4, Nexus 5, Nexus 7, iPhone 6 Plus and notebook computers. They are all able to connect to Wifi when I get home. However, the new AT&T Samsung Galaxy S6 will randomly fail to connect to WiFi when I get home. It does manage to automatically connect some of the time but most of the time I have to remember to connect it manually. Is this a defect on my particular unit? I have tried doing a factory reset but it doesn't seem to help.
Was having issues with my s6 staying connected to open aps. Made sure the smart network switching was off, wiped cache and messed with other settings. Nothing worked. I opened up the AT&T smart WiFi app and adjusted the settings for public hotspots. No problems since making the change. I disabled the app no problems staying connected.