Date track history for employee self service phone updates

There appears to be no date track history when an employee submits phone number updates via Employee Self Service Personal Information.   The delete option also purges from the database (we have hidden this option via Personalization).  Has anyone come up with a solution to for this?  In the People form, HR staff can end date the old phone and add the new one with the effective date, but not through employee self service.  
Thanks,
Jody