Why won’t the screen turn on when a call or a message is received?

When a call has been received the ringtone will play, and the phone vibrates. The display for a incoming call only appears when the phone is on and in use. How do I fix this?

이 질문에 답하기 저도 같은 문제를 겪고 있습니다

좋은 질문 입니까?

점수 0
댓글 달기