Polish cellco P4, which trades under the Play brand, has been authorised to begin 5G trials in the 2100MHz band. The Office of Electronic Communications (Urzad Komunikacji Elektronicznej, UKE) is allowing the operator to carry out 5G tests in the Tri-City area of Gdansk, Gdynia and Sopot, with a view to progressing to a commercial launch early next year.