Calls arrive on the LG device without vibration by default, and you can not only turn the vibration on or off in the settings, but also change its type.

Note: This guide shows how to turn the vibration on or off for sound (calls). Button vibrations are not turned on or off with this setting.

Android 9 (LG UX 9.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Sound
Step 3:  Enable or Disable  Ring with vibration
  1. Open the Settings
  2. Tap on Sound
  3. Enable or Disable Ring with vibration

LG Instructions
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