This is an app that sound a dial tone [DTMF signal] from the speaker of the iPhone.
- This app uses registered data of iPhone "Contact" app.
- "Favorites" and "History" does not share the "Phone" app.
- You can adjust the volume, dial speed and delay time.
- Select a personal data in this app. Close to telephone receiver and the speaker of the iPhone. And tap the number to call.
- This is the only sound app. It does not use the iPhones mobile line.
- Several models of telephone receiver may not be available to external signals.