Galaxy S24

SM-S921U1

Firmware S921U1UEU5DZDR

United States · ATCAndroid 16Built Apr 29, 2026

Release information

Firmware identifiers

The software versions and region covered by this firmware update.

Inside the firmware

Read from the build properties and kernel of this firmware.

United States · CSC ATC · 3 carriers in 2 countries

What is CSC?

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

Altice USA Wireless, Inc.MVNO

MCCMNC313390NWIDNW01879

TEST

MCCMNC00101NWIDNW01961

Test network

ATC

MCCMNC208090NWIDNW01879