Bit Guardian Parental Control offers a Calls feature that allows you to block all contact, unknown calls or specific contact numbers you don’t want your kid to contact.
Here is how you can use the calls feature.
Step 1: Go to the parent’s dashboard of the Bit Guardian Parental Control app(Parent’s Device) and select the kid for whom you would like to use the Calls feature.
Step 2: Tap the Calls feature.
Step 3: Enable the Calls and get access to the kid’s contact list.
Step 4: Choose block all (if you want to block all the calls), or choose unknown call (to block all the unknown/spam numbers). Tap on the blocked contacts to block a specific number in the contact list. A parent can block both outgoing and incoming calls with these options.
Note: This feature won’t block any text messages sent or received on your kid’s phone.