To block a specific number where they receive a message "not available, blocked, etc." it's free, you do not have to have any safe 'reason' to block. Any phone will co (I am 100% sure that Verizon can block free up to 5 lines) simply called Verizon n bloc said this, did that automatically expires after three months, but can simply renew. Love hurt me to have a single application that can send specific numbers Vm (as iBlacklist) without jail breaking my iPhone; (