According to reports from Korea, Apple has given BOE a "conditional approval" for iPhone panel supply. BOE hasn't been able to meet 100% of Apple's requirements, but it is now given time to fix these issues, and may be able to become a supplier to Apple if all goes well.
Even if BOE manage to satisfy Apple, it will take some time and so it is likely that it won't receive large orders for the iPhone 13 series. Apple currently buys all of its iPhone AMOLED panels from Samsung Display and LG Display. BOE aims to supply the panels for the standard iPhone 13 (not the Pro series).
In 2020 BOE did not pass Apple's OLED quality test for the iPhone 12 , but BOE did manage to later enter Apple's supply chain, likely only for aftermarket (refurbished models) panels.