Open the app you want to use
Tap the microphone or voice settings
Select the voice option if available
Go to Settings
Tap Accessibility
Tap Spoken Content
Tap Voices
Choose the language
Select the voice you want
Download the voice if needed
Go to Settings
Tap Siri & Search
Tap Siri Voice
Choose a voice and accent
Go to Settings
Tap General
Tap Keyboard
Tap Dictation if needed
Use a third-party voice changer app for calls or recordings
Open the app’s voice effects
Record or speak with the selected voice
Check app permissions for microphone access