On Android, a variety of apps can record a call directly, unless the phone manufacturer blocks it. On iPhone, recording phone calls is blocked, period. The apps that do exist to record a call—and there are quite a few—have a workaround, but it will usually cost you.
Recording Phone Calls on an iPhone Without Using Apps This method can be considered as the easiest, fastest, and perhaps “dirtiest” way of recording a phone call from an iPhone. All you basically need to make this work is another device that has a microphone that can record (like a computer, iPad, or a portable recording device).

Businesses should have two main types of greetings to create an excellent call experience. The first one is what we call a “welcome greeting” – this greeting welcomes callers to your business. Typically, a welcome greeting will present a menu of call options like hours, location, or customer service. For more details on how to create a welcome greeting for your general business number, read this article.
As a matter of fact, some reports that have explored the decline of voicemail say the service is really only used by two types of people anymore: older parents and business people. But that still doesn’t lessen the annoyance of the receiver when they have to listen to the voicemail from mom and pop or the used car sales guy.