How To Block Caller ID On Cell Phones

For every Cell Phone Provider The Code is different. One of Them will work.Press: 
*#30# and The Phone Number 
*#31# and The Phone Number 
*31# and The Phone Number 
#31# and The Phone Number
File With Codes: http://www.4shared.com/office/wqHw_9XD/How_To_Block_Caller_ID_On_Cell.html