Here are two ways to manage your TextApp call history:
Delete a Single Contact:
Open the TextApp.
Tap on the Recents icon.
Select the contact or number you wish to delete from your call history.
Swipe left on the entry.
Tap on the Delete button.
Delete All Call History:
Open TextApp.
Tap on the Recents icon.
Look for the Edit option in the top right corner and tap on it.
Select Clear ( located at the top left corner).
Confirm the deletion of your entire call history by tapping on Yes.
Remember: Once your call history is deleted, it cannot be recovered. Be sure before clearing the records.