Once you have installed Speechbolt, login to your account and go to Settings > Permissions. Enable the Contacts permission to ensure that Speechbolt never blocks a number in your contacts list*, and enable the Call Blocking permission to turn on Speechbolt's powerful spam protection.
From there, you’re all set! We will automatically block any numbers on your personal block list.
Note: Speechbolt will never upload your contacts to our cloud. Everything stays on your phone.