1. Please use the computer to play the video, and determine whether the synchronization of audio and video is the problem of the mobile phone or your video file.

2. It is recommended that you close the programs you don't use. You can close these programs by holding down the home key and entering the Task Manager.

3. You can download software like Moboplayer or MX Player to help you decode the video.

Please back up your data and go to recovery to clear the cache, which may be caused by too many caches.

5. If the above methods can't solve the problems you encounter when playing video, please go to Xiaomi's home or maintenance point near you and ask our staff to check the phone settings for you.

Address and telephone enquiry:/service/post office

Thank you for your support and wish you a happy life!