If the FaceTime icon has a question mark on it when you place your call, or if it doesn't light up, it may be because the person you're calling can't accept a FaceTime call.
Ọ bụrụ na akara ngosi FaceTime nwere akara akara na ya mgbe ị na-etinye oku gị, ma ọ bụ ma ọ bụrụ na ọ dịghị enwu, ọ nwere ike ịbụ n'ihi na onye ị na-akpọ enweghị ike ịnakwere oku FaceTime.