For when you want to surprise that special someone
How to keep your phone number private – Lifehacker
All you have to do is enter *67 + 1 + the number (w/area code) and it comes up as restricted. Perfect for just leaving a message, as most people let those calls go to voicemail. Also good for those surprise “hey, you fucked me over and here’s what I have to say about it!” phone calls.
Dude you totally called me today, didn’t you?