They are most likely referring to this in collaboration with Jony Ive:
https://www.yahoo.com/entertainment/openai-jony-ive-talks-ra...
Re:OpenAI is too cheap to beat
by SkyMarshal on Thursday October 12, 2023 @03:07PM
(#37861628)
Yes that one.
What phone are you referring to? A quick google didn’t seem to pull up anything related to OpenAI launching a hardware product?