basic info: iPad 3 running IOS 8.4.1 I have a router and repeater. The repeater has 2.4 and 5ghz bands. At various times I have logged into all three. Invariably the iPad will lose the connection. Sometimes I can log back in to a different band or router. Sometimes I have to reboot iPad. I've tried many of the fixes mentioned but nothing seems to work. I have another identical iPad and it keeps a connection just fine. I'm wondering if there might be a problem the network adapter. All suggestions are most welcome.