You can't just use her phone to call your friends.

Why didn't he know how to use his own phone?

I asked if he would like to use my phone.

Use a phone you can control for a couple of hours.

Even talking to her I had to use a public phone.

I could see he'd never used a public phone before.

Use a phone in a different room when you are at home.

Don't go back inside your house to use the phone.

To use the phone, say the name of the person or company you want to call.

And if your son is away from home, use the phone.