By subscribing to Ponta Pass / Ponta Pass Light, you can use the "Anshin Service" which includes "Data Backup" and "Spam Message and Call Blocking". Please check the following page for detailed instructions on how to set up.
If you sign up for a new contract or change your plan and are now using the "Ponta Pass" included in the plan, you will still need to apply for the "Ponta Pass".