Here is how to hide your friends number and people will not be able to call him again. pick your friend phone,go to his phone se...
pick your friend phone,go to his phone settings,then move down to "call settings"
you will see many options just select "call forwarding" then you will see many option again just select "call divert" and you will be ask to Enter Phone Number
enter his phone number there but dont add the last digit there.for example if your friend number is 09675478075 ,then enter 0967547807 and dont add the 4 to it. thats just an example o
now if anybody call your friend,the reply they will be getting are "the number is incorrect" "not reachable" "does not exist" "unable to connect and etc
if you want cancel it-just dial ##21# or go back to "call divert" and remove the number there.
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