False Connectivity errors

[WPCentral Question]

Hi there, i just got a new lumia 635. i connect to my wifi succesfully. although, when i try to login on facebook,facebook messenger,twitter,6snap,vine and foursquare it pops me a notification that the connection failed. even in cortana, when i speak it shows me that there is no internet connection, meanwhile when i type instead of speaking it doesnt have a problem. i tried reseting my phone but didnt get any results. i also changed my location, language etc but still nothing, can someone help me?