Sophie lived in a big world full of busy people with places to go. She always saw people with their cell phones in their hands, no matter what they were doing.

Sophie wanted a cell phone, too. They looked so fun, and she had friends who had them. Sophie ended up buying herself a phone.

I finally have a cell phone! Now I can talk to all of my friends!

When Sophie got home, she talked to her mom about her new phone. But her mom was worried.

Sophie, if you have a phone, you need to make sure you are using it the right way.

What do you mean?

Having a cell phone is not just for talking to your friends. You can also go online and make phone calls to other people. But there are rules for when you go online.