Orange Poland has increased the number of its base stations supporting LTE. As of the end of March, the operator had 3,200 stations operating on the band 800 MHz and 350 stations in the band 2600 MHz. In total, the operator has 9,400 base stations for LTE, including some in the band 1800 MHz.
Source: https://www.telecompaper.com/news/orange-poland-reports-lte-base-station-expansion-in-march--1191168