Google does not specifically mention the use of on-device AI in its post. However, according to 9to5Google, on-device AI is most likely due to device compatibility. These new Call Screen features are only available on Pixel 6 and later devices. The Pixel 6 was the first Pixel phone to use Google’s Tensor chip. Where there was on-device AI. That means it’s possible that AI will play a role in the changes.