I have a Nexus 7 tablet that I have been trying to connect to our enterprise wireless system with no luck. We use certificate authentication for all of our devices. I am able to load the certificates onto the device and install them. When setting up the connection, we use TLS and no Phase 2 authentication. I select the correct certificates for the connection, but there is always an authentication issue. I have tried different file extensions on the certificates including .cer, .pem, and .pfx with no luck from any of them. Does anyone have suggestions on where to go from here???