Blocking your phone number
Service "line lock" is the easiest way to get your phone number blocked permanently. To get this service activated on your number, you must contact the customer service center services provider and ask them for it. Before you process your application, the customer service executive will ask you some questions, such as address and date of birth to confirm your identity. After activating the service, your cell phone number will not appear on caller ID of the receiver. If you have this service activated, but the other person know about your identity, you have to dial * 82 before dialing the number from another phone. If you do not want to use the line blocking service, but want to hide their identity from the receiver of the call, simply dial * 67 before dialing the phone number.