The difference is whether you’re making calls or getting calls:

Yahoo! Phone Out

The Yahoo! Phone Out service lets you make calls from your PC to traditional landline and mobile telephones. To learn more about this service and view our rates, go to the Phone Out page.

Please note: Higher rates might apply to mobile telephones.

Yahoo! Phone In

The Yahoo! Phone In service lets you receive calls on your PC from traditional landline and mobile telephones. To learn more about this service and view our rates, go to the Phone In page.