On September 15, new US requirements came into effect, according to which processor manufacturer TSMC and others
The license uses the wording “maturetechnology". These are the 28-nm process technology and older. Huawei's subsidiary HiSilicon first used this technology in the Kirin 620 platform in 2015.
Of course, modern smartphones require moreadvanced technologies. The latest flagship chip from Huawei uses a 5nm process technology. It is impossible to imagine the use of 28 nm technology in a smartphone that meets modern requirements.