Grandad: I want to buy a 'smartphone'.
Rebecca: Do you know anything about the smartphone, Grandad?
Grandad: Yes, I do. I know they have touch screens, not buttons, and you can download apps.
Rebecca: Yes, that's right. You can also change ringtones for different people.
Grandad: Can I get those from the Internet?
Rebecca: Yes. Now look at my phone. It has a very good battery. It lasts for ten hours.
Grandad: That's good. Do I need to buy a portable charger too?
Rebecca: No. It comes with the phone.
Grandad: Thanks, Rebecca.