For example, if we have paired the Huawei smartphone with the radio or sound system in the car, we can share the stored contacts so that we can call contacts directly using the audio system by voice command.

Android 10 | EMUI 10.0
Step 1:  Open the  Settings
Step 2:  Tap on  Bluetooth
Step 3:  Open the  menu  of the paired device
Step 4:  Enable or disable  Contact sharing
  1. Open the Settings
  2. Tap on Bluetooth
  3. Open the menu of the paired device
  4. Enable or disable Contact sharing

Huawei Instructions