FaceTime Activation An Error occurred during activation. Try Again. While using Wifi

FaceTime Activation An error occurred during activation. Try Again. 01

FaceTime Activation An Error occurred during activation. Try Again. Many people using iPad with wireless internet connection, able to download game in App Store, able to surf the web using using Safari. But while open the FaceTime for sign in, the iPad prompt out this message. FaceTime Activation An Error occurred during activation. Try Again.