Galaxy S21 5G
Firmware G991U1UEU1AUAG
United States · ATCAndroid 11Built Jan 31, 2021Release information
The software versions and region covered by this firmware update.
G991U1UEU1AUAGG991U1OYM1AUAG United StatesUnited States · CSC ATC · 3 carriers in 2 countries
CSC is Samsung's region and carrier customization. The networks below are included in this release.
Altice USA Wireless, Inc.MVNO313390NWIDNW0187900101NWIDNW01961
ATC208090NWIDNW01879