WiFi ICON is gray on my kitkat ONLY at home and ONLY with a specific device I have noticed that when I'm at home, the WiFi icon is always gray, so I cab still have access to the internet but notifications from apps like whatsapp, Facebook, etc doesn't, work. When I connect to another WiFi network like the one on my job, the icon turns to blue and notifications work as expected.

I think the problem may be on my internet at home, but how can I fix this?

UPDATE
There are some strange things i noticed: It's only this specific phone that does not receive push notifications. I tested with my brother's phone and with one of mi friend and they both receive push notifications... so the problem happens ONLY at home and ONLY with this specific device.
You probably dont have great service in that area.