Re: "I attempted to set up Personal Voice on my iPhone earlier today by completing the 150 phrases.
Now, instead of creating the PV, there is an error message that says: "Preparation of your Personal Voice is paused. Your iPhone must be charging and locked to generate your Personal Voice"
Thank you kindly for clearly explaining the situation, and providing info. on what you have tried to solve it.
Am no expert here, yet your post deserves a response ... maybe something is missing from the procedure.
To set up Personal Voice on your device:
Seems your iPhone would need Face ID, Touch ID, or a device passcode or password
Else, if that's ok:
Wondering if there may have been a little more to the set-up that still needs to be completed ?
Eg: Apple Support's online article: Record your personal voice on iPhone - Apple Support
says:
"If you need to pause your recording session, tap Done.
To resume, tap the name of your personal voice, then tap Continue Recording."
You may want to try resuming to see if that's a possibility.
or wondering if you also ensured your iPhone was connected to wi-fi overnight.
Create a Personal Voice on your iPhone, iPad, or Mac - Apple Support
says:
"Your speech is processed securely on device overnight while your device is charging and connected to Wi-Fi".
All the best :-)