2. Check the window position of the infrared sensor for obstacles.

3. Confirm whether the system is the latest version.

_ only pomelo? -Sound and vibration-Do not disturb mode, check whether the switch is on. Turn on the Do Not Disturb mode, and the incoming call will not light up.

* Note: When the Do Not Disturb mode is turned off, turn on the alarm for disturbing and repeating incoming calls, and the contacts who allow disturbing and repeating incoming calls will light up within three minutes.

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_ Are you happy? View method: Go to Settings-System Management-Customer Service-User Manual-Overview of Mobile Phone and Quick Start-Introduction of Mobile Phone-Photosensitive &; infrared

_ What's the matter with you? -System upgrade. It is recommended to observe after upgrading the system.

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