Any girl you get a number from, text soon in order to set up a date and pump some emotion into her.

CALL HER TO FINALIZE THE DATE.

This gives you oppurtunity to spit solid game on the phone and show her a bit of personality. Most importantly, it asks that she invests time.

All people want a return on their investment. If a girl invests time into you, she is showing that she can appreciate you.

Additionally, you get a snippit of her personality.