I'm at work where WiFi has a strong signal but when I connect and enter the password it will turn blue for a moment then gray. What's going on since the password is correct, the signal is strong and it worked in the past?
From what I have gathered researching this myself, blue indicates a connection to google sync services and such. Gray would indicate a lack thereof, but still tells you that a data/cell connection has been made
I'm having the exact same issue. Its not the router because my other devices work fine. I dirty flashed the 4.4 jbsourcery rom on my gnex. That is most likely the cause but I use wifi so little that it is not necessary for me to wipe the phone.