Sadly, offline dictation is a separate feature, it is not the speech-recognition used for Siri. Quote directly from Apple: "The recording of the user’s spoken

Sadly, offline dictation is a separate feature, it is not the speech-recognition used for Siri. Quote directly from Apple: "The recording of the user’s spoken words is sent to Apple’s voice recognition server. If the task involves dictation only, the recognized text is sent back to the device. " Source: Page 69 in https://www.apple.com/business/site/docs/iOS_Security_Guide.pdf https://www.apple.com/business/site/docs/iOS_Security_Guide....