Galaxy M55s 5G firmware, updates & specs | SamFrewPhone · 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
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
Firmware is specific to the model code. Find yours on the box or in Settings › About phone, then pick it below.
SM-M558B · Galaxy M55s 5G (8 GB Memory)Sold in
IndiaFirmware1 CSC · 14 buildsLatest buildM558BXXS3DZH1 · Aug 14, 2026→ 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)
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
Body
- Dimensions
- 163.9 x 76.5 x 7.8 mm
- Weight
- 180 g
- Form factor
- Touchscreen Bar
Sold in 2 countries.
Asia-Pacific2
Bangladesh- India
5G bandsN38(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 bandsB38(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) SIMNano-SIM (4FF); SIM 1 + Hybrid (SIM or MicroSD); Dual-SIM Wi-Fi802.11a/b/g/n/ac/ax 2.4GHz+5GHz, HE80, MIMO, 1024-QAM PositioningGPS, Glonass, Beidou, Galileo, QZSS 
