P9 has missed calls, short messages and WeChat. Why doesn't the indicator light on the receiver flash?

Hello, thank you for using Samsung products! In ord to make users have a more convenient and intimate product experience. Samsung Galaxy S III mobile phone GT-I9300 has added the function of supporting indicator light reminder, and the colors of different indicators represent different reminders. Blinking blue light: missed event (e.g. unread SMS/missed call). The blue light is always on when the machine is turned on and off. Red light flashing: when the power is lower than 15%. The red light is always on: charge. Green light flashing: application time prompt (such as QQ information, WeChat, etc. The green light is always on: charging is complete. For the adjustment of LED display position of mobile phone: (Application-Open Settings -LED indicator) I hope the above reply is helpful to you and wish you a happy life. thank you