Huawei recently held its own in-house Analyst Summit for 2019. During a Q&A at this event, its representatives reportedly confirmed that Apple has not responded to its proposal to sell it the 5G modems it needs for its iPhones. This offer had recently been made publicly, possibly to highlight the fact that one OEM can use next-gen radio bands and the other cannot.
https://www.notebookcheck.net/No-Apple-has-not-taken-up-that-5G-modem-offer-Huawei.418083.0.html