As of January 2022, the Mi Mix4 100W wireless charger has not been banned from sale or use. However, depending on the laws and regulations of different regions, there may be restrictions or bans on certain products. Therefore, before purchasing and using any electronic products, it is recommended to consult the relevant regulations issued by local government departments or relevant authorities to ensure the legality and safety of the products. At the same time, pay attention to the use of qualified chargers and accessories, and follow the correct use methods to ensure that the charging process is safe and reliable.