[iPhone God App] It was found using the Blocker App actually

Silence unwanted calls and notifications by creating your personal Allowed list! "Blocker App" lets you simply and easily create your Allowed list with fine-grained control over every single contact. Tap a contact in your Allowed list to send them to your Do Not Disturb list. Likewise, tap a contact in your Do Not Disturb list to send them to your Allowed list. That's it!

Please follow the in-app help guide to properly configure your device for Do Not Disturb mode and to customize your personal Call Blocker Whitelist.

When Do Not Disturb is ON in the Settings app and your device's screen is locked, select calls and alerts that arrive will be silenced. Any incoming call from a contact not in the Allowed list will be automatically forwarded directly to your voicemail.

Important Note: Do Not Disturb must be enabled in the Settings app, the 'Call Blocker Whitelist' must be configured as the Do Not Disturb 'Allow Calls From' group, and calls will only be silenced when the device screen is locked. Please read the in-app help guide and FAQ for further information.