Galaxy S21 5G

SM-G991U

Firmware G991USQU5CVC4

United States · DSAAndroid 12Built Mar 7, 2022

Release information

Firmware identifiers

The software versions and region covered by this firmware update.

United States · CSC DSA · 4 carriers in 1 country

What is CSC?

CSC is Samsung's region and carrier customization. The networks below are included in this release.

AT&T

MCCMNC310410NWIDNW02088

AT&T Mobility

5G 8505G 37005G 39000LTE 700LTE 850LTE 1700LTE 1900LTE 2300UMTS 850UMTS 1900GSM 850GSM 1900

AT&T

MCCMNC311180NWIDNW02088

AT&T Mobility

UMTS 850UMTS 1900GSM 850

Internal use

MCCMNC99999NWIDNW02088

TEST

MCCMNC00101NWIDNW00156

Test network