WiFi connection

i have a problem connecting my iPhone to my home WiFi network. the network has no problem and two other devices are connected and working but mine does not. i reset my network setting and it did not work either. when i go to my WiFi setting it looks like my device is connected there is a blue check-mark and no other note but in my home page there is no WiFi icon on the top of the page and i am not connected to internet. i reset the phone and it did not work. i reset my router and it did not work either. i don't know what else to do. i am officially paralyzed