By default, all calls on the iPhone will play audio through the standard earpiece at the top of the phone, and if someone wishes to use speakerphone they enable it manually by tapping on the “Speaker” button during an active call.
How to:
1/Open the “Settings” app
2/“General”
3/Go to “Accessibility”
4/Tab “Call Audio Routing”
5/Change to “Speaker”
![](https://i.ytimg.com/vi/n_x5oKG-H1E/maxresdefault.jpg)