Samsung Galaxy M55 5G

Released Mar 2024 · 2 model codes · firmware for 18 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 16M556BXXS5DZH1 · Aug 27, 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-M556BSold in14 countriesFirmware16 CSCs · 260 buildsLatest buildM556BXXS5DZH1 · Aug 13, 2026→

Software updates

One UI and Android versions of the Galaxy M55 5G, with the first release of each.

May 2026
One UI 8.5 · Android 16
Official release: M556BXXU5DZE3 (SM-M556B)
Oct 2025
One UI 8 · Android 16
Official release: M556BXXU4CYJ4 (SM-M556B)
May 2025
One UI 7 · Android 15
Official release: M556BXXU4BYE7 (SM-M556B)
Mar 2024
Android 14
First firmware build: M556BXXU1AXC1 (SM-M556B)

Specifications

As published by Samsung for the SM-M556B; 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, 2.36GHz, 1.8GHz
CPU cores: Octa-Core

Memory

RAM: 8 GB
Storage: 256 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 29 countries.

Europe11

Czechia
Germany
Hungary
Ireland
Italy
Poland
Portugal
Russia
Slovakia
Spain
United Kingdom

Asia-Pacific6

Bangladesh