Cell Phone Mystery   

A young man wanted to get his beautiful blonde wife something nice for their first wedding anniversary. So, he decides to buy her a cell phone. She is all excited and she loves her phone. He shows her and explains to her all the features on the phone.

The next day the blonde goes shopping and to the beauty parlor. Her phone rings and it's her husband. "Hi hon," he says, "How do you like your new phone?"

"I just love it, it's so small and your voice is clear as a bell. But there's one thing I don't understand. How did you know I was at the beauty parlor?"