Galaxy S21 5G

SM-G991U1

Firmware G991U1UES4AUJ7

United States · XARAndroid 11Built Oct 18, 2021

Release information

Firmware identifiers

The software versions and region covered by this firmware update.

United States · CSC XAR · 4 carriers in 2 countries

What is CSC?

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

AT&T

MCCMNC310410NWIDNW01995

AT&T Mobility

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

AT&T

MCCMNC311180NWIDNW02083

AT&T Mobility

UMTS 850UMTS 1900GSM 850

AT&T

MCCMNC310410NWIDNW00180

AT&T Mobility

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

AT&T

MCCMNC311180NWIDNW02084

AT&T Mobility

UMTS 850UMTS 1900GSM 850

TEST

MCCMNC00101NWIDNW00156

Test network

AT&T

MCCMNC310280NWIDNW02083

AT&T Mobility

GSM 1900

AT&T

MCCMNC310280NWIDNW02084

AT&T Mobility

GSM 1900