Block 02x

AUTOMATIC SPAM CALL BLOCK — NO MORE DISTURBANCES.
Block 02x automatically blocks calls from fixed-line numbers (024 Hanoi, 028 Ho Chi Minh City, 0236 Da Nang, etc.) — the source of 90% of telesales, advertising, and spam calls in Vietnam. When a call comes in from this number, the application immediately rejects it without letting the phone ring, and simultaneously records it in the call history for you to review at any time. You can add important fixed-line numbers to the whitelist to avoid accidental blocking, or manually block any mobile number via the blacklist. Phone numbers already in your contacts will always be connected normally. In addition, the application allows flexible customization by region — block all 02x numbers or select only specific areas.

The application runs entirely on the device and does not collect or send any data to a server. Call information is processed locally to make blocking decisions, ensuring absolute privacy for the user. Permissions to grant “Default Call Filtering App” are required to function (Android 10 and above).