Huawei P40 Pro
Android 10.0
1. Find "Contacts"
Press Tools.
Press Contacts.
2. Merge identical contacts
Press the menu icon.
Press Settings.
Press Organise contacts.
Press Merge duplicate contacts.
Press the fields next to the required contacts.
Press Merge.
3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.