If we just want to delete an entry from the call history on the Xiaomi smartphone, we tap and hold the desired call history entry and select Clear call history, which will delete all associated details.

Android 10 (MIUI 12.0)
Step 1:  Open the  Phone app
Step 2:  Tap an hold an  entry
Step 3:  Tap on  Delete
Step 4:  Confirm with  Delete
  1. Open the Phone app
  2. Tap an hold an entry
  3. Tap on Delete
  4. Confirm with Delete

Xiaomi Instructions