Hi @Thefnb, welcome to our forum!
I'm not quite sure that I understand your question. Do you want to delete a certain call from the call log, or do you want to clear the entire call history?
You can find a lot of information regarding the call log in the user guide that you can access on the link below.
https://support.sonymobile.com/global-en/xperiaxa/userguide/using-the-call-log/
Let me know if that helps and I'm sorry if I misunderstood your question!
