I noticed that the devices reported in this post to have the same issue all have an 8 core Neural Engine (NE). I wonder if a 16 core NE is required to create a Personal Voice (PV). I read of someone creating a PV with a mini 6 which has a 16 core NE. If anyone wants to test this hypothesis, here are the devices Apple's site says have 16 core NEs: iPad 10, iPad Air 4 and above, iPad Pro 3 and above, iPad mini 6; iPhone 12 and above, iPhone SE 3. Can anyone report if devices with 16 core NEs do/do not display the Personal Voice option in Accessibility Settings?