I've been seeing a couple of videos of guys walking up to women and telling them to just put their number in their phones. I always tell guys that getting a phone number doesn't really mean that she is going to see you again or even have sex with you. You have to do more than just tell a girl to put her number in your phone. Check me out where I explain more here:
http://mrlocariotv.com/?p=1935
http://mrlocariotv.com/?p=1935