If you use a Huawei mobile phone, take Huawei Mate 30 mobile phone as an example:
First, add and use a remote control.
1, input utility >; Intelligent remote controller > add, and select the type and brand of remote controller (TV, air conditioner, set-top box, camera, network box, DVD, projector).
2. Aim the infrared emission hole on the top of the mobile phone at the household appliances, add the household appliances to be remotely controlled according to the prompts and save them.
3. After successful addition, click the boot icon and you can use it.
Second, turn on or off the key tone of the remote control.
Enter the smart remote control > four-point icon >; Set, turn off or turn on key sound and vibration prompts.