By Kenrick Cai

SAN FRANCISCO (Reuters) - Apple on Monday is set to unveil its iPhone 16 lineup, focusing on how its flagship device's features have been infused with artificial intelligence, rather than its usual emphasis on hardware upgrades.

The event at the tech giant's Apple Park headquarters at 10 a.m. PDT (1700 GMT) follows its developer conference in June during which the company unveiled Apple Intelligence, its take on generative AI that can conjure text, images and other content on command.

It had also showed off an improved version of voice assistant Siri, featuring an integration with ChatGPT, the chatbot developed by Microsoft-backed OpenAI.

The refresh comes as iPhones face stiff competition from Huawei in China, where consumers are hankering for more AI features and are willing to pay for them. Huawei itself has scheduled its own product announcement mere hours after Apple's event.