For android:
Please find your call history in Contacts - Call
history.
If you miss this option, please upgrade imo then
retry.
For iOS:
This function is not available.
You may check your iPhone call record.
Tips:
You may press on the call record for over 1s
-Delete. Please notice that the deleted call
record can not be recovered.
Click on the "..." button at the top corner
to delete selected records or delete all
records.