- Google search:
https://www.google.com/search?q=huawei+p20+pro+bluetooth+problems&rlz=1C1GGRV_enNL801NL801&oq=%22huawei+p20+pro%22+bluetooth+&aqs=chrome.3.69i57j35i39j0l4.12007j0j7&sourceid=chrome&ie=UTF-8 - https://www.technobezz.com/how-to-fix-huawei-p20-pro-bluetooth-issues/
I found a possible solution, I have not tried yet. Factory reset:
https://forum.xda-developers.com/showpost.php?p=78830584&postcount=12