The ability to change voice on Google Maps is available on the Android and iOS platforms. However, the implementation isn't the same on both mobile platforms. Let's start with Android first.

Google Maps is rolling out new, much faster voice input that's powered by the Google Assistant on Android devices.

A bug with Google Assistant on Android Auto has been forcing all navigation voice commands through Google Maps instead of other apps.

Android 15 is preparing a "voice activation" feature, and if we're right about how it works, it could let you launch more apps hands-free.