This article explains two ways to record calls on iPhone. It also gives you tips on pre-installed and third-party software that you can use to record calls.
How to Record Calls on iPhone | Free & Easy
The default Phone app does not support recording phone calls. One of the easiest ways to record a live call on your iPhone is to use a phone app that supports recording. A popular and free app that fits this bill is Google Voice; other apps may require a fee.
To use Google Voice to record live calls, follow these steps:
Download the Google Voice app and set it up so you can make and receive calls.
