Galaxy S23 Ultra

SM-S918U1

Release S918U1UES7EZCI

USA · AIOAndroid 16Built 4/2/2026

Release information

Firmware identifiers

The software versions and region covered by this firmware update.

USA · CSC AIO · 3 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

MCCMNC310150NWIDNW00057

AT&T Mobility

UMTS 850UMTS 1900GSM 850

Internal use

MCCMNC99999NWIDNW00057

TEST

MCCMNC00101NWIDNW00156

Test network