Samsung Galaxy S21 Ultra 5G

Released Jan 2021 · 7 model codes · firmware for 228 CSC regions

Display size: 6.8"
RAM: 12 GB
Battery: 5000 mAh
Rear camera: 108 MP + 10 MP + 12 MP + 10 MP
Storage: 128 GB · 256 GB · 512 GB

Download firmware Update history Specifications

Software support

Update policySecurity updates endedLast on Samsung's security update list in Jan 2026

Latest official updateOne UI 7 · Android 15G998BXXUJHZF2 · Jul 9, 2026

Security patch levelJanuary 2026Monthly release fixed 34 vulnerabilities

Choose your model

Firmware is specific to the model code. Find yours on the box or in Settings › About phone, then pick it below.

ModelSold inFirmwareLatest build

SM-G998BSold in76 countriesFirmware173 CSCs · 10,377 buildsLatest buildG998BXXUJHZF2 · Jul 3, 2026→

Software updates

One UI and Android versions of the Galaxy S21 Ultra 5G, with the first release of each.

May 2025
One UI 7 · Android 15
Official release: G998USQUEHYDA (SM-G998U)
May 2024
One UI 6.1 · Android 14
Official release: G998BXXUAGXDA (SM-G998B)
Nov 2023
One UI 6 · Android 14
Official release: G998BXXU9FWK2 (SM-G998B)
Feb 2023
One UI 5.1 · Android 13
Official release: G998BXXU6EWAF (SM-G998B)
Nov 2022
One UI 5 · Android 13
Official release: G998BXXU5DVJC (SM-G998B)
Mar 2022
One UI 4.1 · Android 12
Official release: (SM-G998B)

Specifications

As published by Samsung for the SM-G998B; other model codes can differ (chipset, network bands).

Display

Display size: 173.0mm (6.8" full rectangle) / 168.7mm (6.6" rounded corners)
Resolution: 3200 x 1440 (Quad HD+)
Display type: Dynamic AMOLED 2X

Platform

CPU speed: 2.9GHz, 2.8GHz, 2.2GHz
CPU cores: Octa-Core

Memory

RAM: 12 GB
Storage: 256 GB

Camera

Rear camera: 108.0 MP + 10.0 MP + 12.0 MP + 10.0 MP
Rear camera aperture: F1.8 , F4.9 , F2.2 , F2.4
Front camera: 40.0 MP
Video recording: UHD 8K (7680 x 4320) @24fps

Battery

Battery: 5000 mAh
Talk time: Up to 41

Body

Dimensions: 165.1 x 75.6 x 8.9 mm

Where it's sold

Sold in 72 countries.

Europe35

Albania
Austria
Azerbaijan
Belgium
Bosnia & Herzegovina
Bulgaria
Croatia
Czechia
Denmark
Estonia
Finland
France
Germany