@MVNH0002 Voice AI is not something that we have tested with mobile apps. There are no mobile-specific docs on that.
However, I would encourage you to try out the built-in dictation capabilities provided OOTB by iOS and Android. By default, the mobile OSs provide decent support for voice input and transforming it into text. That sounds like something that can address your use case well. This is something that works with Pega mobile apps.