Although there are still some rumors involved — for example, that this handset will be a foldable one — at least Huawei has confirmed that its first 5G phone will be unveiled at MWC 2019, which is scheduled to take place in Barcelona, Spain on February 25-28. Other major brands will probably bring 5G phones at CES in January, but Huawei is not well received in the US nowadays.
https://www.notebookcheck.net/Huawei-s-5G-phone-confirmed-to-show-up-at-MWC-2019.362191.0.html