You can delete the call log by long pressing on any of the calls, and on the top right you will have an option to select all calls, post selecting all calls you can click on the delete (trash bin) icon to delete all calls".
Tutorial Video:
You can delete the call log by long pressing on any of the calls, and on the top right you will have an option to select all calls, post selecting all calls you can click on the delete (trash bin) icon to delete all calls".
Tutorial Video: