https://qz.com/1073036/everything-you-need-to-know-about-apples-ai-chip/

Artificial intelligence is becoming a defining characteristic in the smartphone market, powering personalization, virtual assistants, and even battery life.

But AI takes a lot of computing power. To make up for that, companies like Apple and Huawei are adding additional chips into smartphones to handle such tasks. These are complementary to the existing CPU and GPU chips already in phones, and configured to be faster for one specific purpose—AI—at the expense of being able to do anything else. They also keep AI tasks from draining phone batteries as fast. Apple has dubbed theirs the Neural Engine, located inside the A11 Bionic chip, while Huawei’s is called the Kirin 970.