Block hidden/anonymous callers: Automatically block calls with a hidden/withheld caller ID or when the system marks the caller presentation as restricted/unknown/payphone.

Block unknown numbers: Block all calls from numbers that are not saved in your contacts. This includes any number that does not exist in your address book.

Custom blocklists:
- Numbers: Add specific phone numbers to a personal blocklist.
- Prefixes: Block all calls that start with a specific national or regional prefix (e.g., +1-800).
- Call history: View a detailed history of all calls blocked by the app, including how many times each number has attempted to call.
- Daily digest: Receive a daily notification summarizing all blocked call activity.

Customizable settings:
- Choose whether blocked calls should appear in your phone’s call log.
- Decide if you want to receive a silent notification when a call is blocked.
- Set the time for your daily digest.
- Information about how call blocking works.

Privacy:
- All decisions are made directly on the device. Blocklists and history are stored locally using Room.
- The app does not upload your call data to any server.

Limitations & compatibility:
- iOG26 must be set as the default “Caller ID & spam” app; otherwise, Android will not start the screening service.
- Some third-party VoIP calls may not go through Android’s CallScreeningService and cannot be blocked by the app.
- Behavior may vary across different manufacturers/ROMs. On some devices, silencing plus rejecting improves reliability (the app already attempts this where supported).
- Emergency numbers are never blocked.