Haier C300 User Manual - Page 29

4. Firewall You can set the filtrated incoming call and messages, and make your phone under the secret protection. Ca Use this menu to block or allow some numbers for incoming calls and you can edit a blac and white numbers list. Pri You can activate message, contacts, calls and micro SD protection. To activate this functi n, you must enter the security code. SM You can set whether to activate the SMS firewall function and following the filtering rules selected by you. The messages from spam number or unknown contacts will be saved in spam, and you can set the method of reminding for the spam messages. 5. You can ensure the safety of your phone here. Input Security Code which is 0000 by Default. Phone lock: You can set phone lock here. When phone is locked, to unlock, user must enter the security code(either Default or as per choice). ck. 25