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Galaxy M55s 5G firmware, updates & specs | SamFrew

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Galaxy M55s 5G

Samsung Galaxy M55s 5G in Blue

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Phone · Galaxy M

Samsung Galaxy M55s 5G

Released Sep 2024 · 1 model code · firmware for 1 CSC regions

Display size: 16.95 cm full rectangle / 16.66 cm rounded corners
RAM: 8 GB
Battery: 5000 mAh
Rear camera: 50 MP + 8 MP + 2 MP
Storage: 128 GB · 256 GB

Download firmware Update history Specifications

Software support

Update policyQuarterly security updatesOn Samsung's current security update list

Latest official updateOne UI 8.5 · Android 16M558BXXS3DZH1 · Aug 31, 2026

Security patch levelAugust 2026Monthly release fixed 63 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-M558B · Galaxy M55s 5G (8 GB Memory)Sold inIndiaFirmware1 CSC · 14 buildsLatest buildM558BXXS3DZH1 · Aug 14, 2026→

Software updates

One UI and Android versions of the Galaxy M55s 5G, with the first release of each.

Jun 2026
One UI 8.5 · Android 16
Official release: M558BXXU3DZE3 (SM-M558B)
Oct 2025
One UI 8 · Android 16
Official release: M558BXXU2CYJ4 (SM-M558B)
May 2025
One UI 7 · Android 15
Official release: M558BXXU2BYE7 (SM-M558B)
Sep 2024
Android 14
First firmware build: M558BXXU1AXI1 (SM-M558B)

Specifications

As published by Samsung for the SM-M558B; other model codes can differ (chipset, network bands).

Display

Display size: 16.95 cm full rectangle / 16.66 cm rounded corners
Resolution: 1080 x 2400 (FHD+)
Display type: Super AMOLED Plus
Refresh rate: 120 Hz

Platform

CPU speed: 2.4GHz, 2.36 GHz, 1.8GHz
CPU cores: Octa-Core

Memory

RAM: 8 GB
Storage: 128 GB
Card slot: MicroSD (Up to 1 TB)

Camera

Rear camera: 50.0 MP + 8.0 MP + 2.0 MP
Rear camera aperture: F1.8 , F2.2 , F2.4
Front camera: 50.0 MP
Zoom: Digital Zoom up to 10x
Video recording: UHD 4K (3840 x 2160)@30fps

Battery

Battery: 5000 mAh

Where it's sold

Sold in 2 countries.

Asia-Pacific2

Bangladesh
India

Body

Dimensions: 163.9 x 76.5 x 7.8 mm
Weight: 180 g
Form factor: Touchscreen Bar

Connectivity

Network: 2G GSM, 3G WCDMA, 4G LTE FDD, 4G LTE TDD, 5G Sub6 FDD, 5G Sub6 TDD
5G bands: N38(2600), N40(2300), N41(2500), N77(3700), N78(3500); N1(2100), N3(1800), N5(850), N7(2600), N8(900), N20(800), N28(700), N66(AWS-3)
4G bands: B38(2600), B40(2300), B41(2500); B1(2100), B2(1900), B3(1800), B4(AWS), B5(850), B7(2600), B8(900), B12(700), B17(700), B20(800), B25(1900), B26(850), B28(700), B66(AWS-3)
SIM: Nano-SIM (4FF); SIM 1 + Hybrid (SIM or MicroSD); Dual-SIM
Wi-Fi: 802.11a/b/g/n/ac/ax 2.4GHz+5GHz, HE80, MIMO, 1024-QAM
Bluetooth: Bluetooth v5.2
NFC: Yes
USB: USB 2.0
Positioning: GPS, Glonass, Beidou, Galileo, QZSS