A notification Icon is displayed when a call is blocked so you can quickly see if any calls have been blocked. You can filter unwanted calls to block calls using any of the 5 blocking modes as follows.

1. 1. Blacklist mode – blocks all numbers in you blacklist. Numbers can be added to the blacklist from contacts, call history, or manually entered.
2. 2. Whitelist mode – blocks all numbers not in your white list. Numbers can be added to the whitelist from contacts, call history, or manually entered.
3. 3. Contacts Only mode – blocks all calls from numbers that are not in your contacts.
4. 4. Block All – Blocks all calls.
5. 5. Accept All – Accept all calls.

Also blocks incoming text messages using the same rules as incoming calls.

Support wildcard matching using the # character. Example: Block all calls from area code 713, add 713-###-#### to your black list and all calls and text messages from area code 713 will be blocked.

You can quickly add a range of phone numbers to the blacklist or whitelist by using wildcard characters. For example, if you want to block all the 800 numbers, you can add 800-###-#### to the blacklist.

The # character is the wildcard, and is treated by Call Blocker as all digits between 0-9. All other non-numeric characters have no effect, so using white spaces or dash signs is allowed but will not impact the matching process.

The following three formats are regarded identical:

1. 1) 800820####
2. 2) 800 820 ####
3. 3) 800-820-####

Country codes should not be used with wildcard match patterns. for example, if you want to block all numbers from area code 213 in the United States, use 213-###-#### and do not use 001-213-###-#### or +1-213-###-#### .

Gizmoquip Call blocker is fully compatible with other Gizmoquip apps including SMS Scheduler, SMS Tracker and SMS Backup.