With the amendment of the spectrum utilization ordinance in December 2016 this frequency band is no longer declared as "scrace", thus this band is no longer awarded by the regulatory authority.
The mobile licenses which were awarded in 2020 expired by Dec 31, 2020.
The figure below shows the historic assignment of the unpaired 2100 MHz frequency band (TDD):
TDD: 35 MHz of unpaired spectrum:
The following figure shows the historic allocation of the 2,1 GHz TDD bands: