Uzbekistan mobile operator Uzmobile, a subsidiary of the national operator Uztelecom, in cooperation with ZTE, has completed pre-5G testing in Tashkent. The 5G technology was used on the operator's LTE network, with aggregation of several carrier bands, 4×4 MIMO, and 256QAM technologies used during the tests.
Source: https://www.telecompaper.com/news/uzmobile-zte-complete-pre-5g-testing-in-tashkent--1222252