Samsung Galaxy A55 (SM-A556B) — O2C
Samsung Galaxy A55 Released 2024, March 15 | 213g, 8.2mm thickness | Android 14, up to 4 major upgrades | 128GB/256GB storage, microSDXC | Super AMOLED, 120Hz, HDR10+, 1000 nits (HBM) | 50 MP, f/1.8, (wide), 1/1.56", 1.0µm, PDAF, OIS 12 MP, f/2.2, 123˚ (ultrawide), 1/3.06", 1.12µm 5 MP (macro) | Li-Ion 5000 mAh
Samsung Galaxy A55 Network Specifications
| Speed | HSPA, LTE, 5G |
| 5G | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 |
| 4G | 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 32, 38, 40, 41, 66 |
| 3G | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 2G | GSM 850 / 900 / 1800 / 1900 |
| Technology | GSM / HSPA / LTE / 5G |
Samsung Galaxy A55 body Specifications
| SIM | · Nano-SIM · Nano-SIM + eSIM · Nano-SIM + Nano-SIM · Nano-SIM + Nano-SIM + eSIM (max 2 at a time) |
| Build | Glass front (Gorilla Glass Victus+), glass back (Gorilla Glass), aluminum frame |
| Weight | 213 g (7.51 oz) |
| Dimensions | 161.1 x 77.4 x 8.2 mm (6.34 x 3.05 x 0.32 in) |
Samsung Galaxy A55 MISC Specifications
| SAR EU | 0.68 W/kg (head) 1.04 W/kg (body) |
| Colors | Iceblue, Lilac, Navy, Lemon |
Samsung Galaxy A55 display Specifications
| Protection | Corning Gorilla Glass Victus+ |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~390 ppi density) |
| Size | 6.6 inches, 106.9 cm 2 (~85.8% screen-to-body ratio) |
| Type | Super AMOLED, 120Hz, HDR10+, 1000 nits (HBM) |
Samsung Galaxy A55 Sound Specifications
| 3.5mm jack | No |
| Loudspeaker | Yes, with stereo speakers |
Samsung Galaxy A55 Platform Specifications
| GPU | Xclipse 530 |
| CPU | Octa-core (4x2.75 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55) |
| Chipset | Exynos 1480 (4 nm) |
| OS | Android 14, up to 4 major Android upgrades, One UI 8.5 |
Samsung Galaxy A55 Battery Specifications
| Charging | 25W wired |
| Battery | Li-Ion 5000 mAh |
Samsung Galaxy A55 memory Specifications
| Internal | 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM, 256GB 12GB RAM |
| Card slot | microSDXC (uses shared SIM slot) |
Samsung Galaxy A55 Main Camera Specifications
| Video | 4K@30fps, 1080p@30/60fps, gyro-EIS |
| Features | LED flash, panorama, HDR |
| Camera | 50 MP, f/1.8, (wide), 1/1.56", 1.0µm, PDAF, OIS 12 MP, f/2.2, 123˚ (ultrawide), 1/3.06", 1.12µm 5 MP (macro) |
O2C Region Firmware Info
O2C - CzechiaA CSC (Consumer Software Customization) code ties a Samsung firmware build to the country and carrier it was released for, controlling branding, available languages and which OTA updates a device receives. The O2C code is used in Czechia by O2, with 2 distinct Samsung Galaxy A55 firmware versions found so far.
O2C Firmware Version History
| Version | Build Date | Security Patch |
|---|---|---|
| A556BXXSGDZG2 | 2026-07-06 | — |
| A556BXXSFDZF4 | 2026-06-29 | — |
2 Samsung Galaxy A55 firmware versions found for the O2C region, newest first.
Samsung Galaxy A55 O2C Firmware ArchiveOfficial Samsung Galaxy A55 firmware for the Czechia O2C region, including BL, AP, CP, CSC and HOME_CSC packages for Odin flashing.
Samsung Galaxy A55 Combination & Special FilesCombination and service files for the Samsung Galaxy A55 (SM-A556B) — authorized repair, FRP reset after service, and diagnostics.
| Device Mobile | Version | Bit - SW REV | FA | Change list | Updated | Status |
|---|---|---|---|---|---|---|
O2C Firmware FAQ
Which carriers use the O2C CSC on the Samsung Galaxy A55?+
The O2C CSC is used by O2 in Czechia. Flash the O2C firmware only if your device was sold through one of these carriers.
How many Samsung Galaxy A55 firmware versions are available for the O2C region?+
2 distinct Samsung Galaxy A55 firmware versions have been found for the O2C (Czechia) region so far, from oldest to the latest build.
How is the O2C CSC different from other region codes?+
Samsung ties every firmware build to one of roughly 599 CSC (Consumer Software Customization) codes, each tied to a specific country and carrier. O2C is the code for Czechia (O2) — flashing a different CSC can change your carrier branding, available languages and which OTA updates you receive.