Call Block is a simple yet effective tool to block unsolicited incoming calls. Now you do not need to turn off your phone just to avoid unnecessary interruptions. Just leave it to Call Block to filter all your incoming calls and SMSes. Select the appropriate Call Block modes like block on, temporary block off or block all calls to suit different situations. Uses 'Background Blocking' method that does not interrupt your work while you use your phone. Conserve battery power without waking your phone from doze mode when blocking calls. Call Block also supports wildcard '*' pattern blocking. You can configure Call Block to filter out incoming calls beginning or ending with certain numbers.