Galaxy S21 5G
SM-G991B · Samsung
- SoC
- Exynos 2100
- RAM
- 8 GB LPDDR5
- Resolution
- 2400x1080
- Android API
- 14 (34)
What this hardware actually means
Editorial interpretation generated from the device's self-reported fields and our SoC tier database. Cross-reference with the raw fields below; if you spot a contradiction, please tell us.
Platform & performance positioning
The samsung SM-G991B reports its platform as Exynos 2100. The CPU configuration is 8-core, Cortex-X1 Cortex-A78 Cortex-A55, running up to 400 - 2912 MHz. The GPU is ARM Mali-G78. Without a confirmed SoC tier mapping for this platform string, we treat the device as unverified. If you're using this entry to compare against a phone you're inspecting, focus on the raw fields below rather than tier-level conclusions.
Day-to-day workload
8 GB LPDDR5 of RAM is comfortable for modern apps and moderate multitasking. Display resolution is 2400x1080.
This record reflects Android API level 34 (14). Android 14 or newer — modern security baseline, supported by all current banking and payment apps.
Trust & buying notes
For a second-hand purchase, also verify the security patch date is no more than ~12 months old, the boot count is plausible for the claimed age, and battery health is above 85%.
Identity
- MANUFACTURER
- samsung
- BRAND
- samsung
- MODEL
- SM-G991B
- MODEL_NAME
- Galaxy S21 5G
- PRODUCT
- o1sxtur
Operating System
- API
- 14 (34)
- KERNEL
- 5.4.242-27760517-abG991BXXS9FXBE
- PLATFORM
- exynos2100
SoC / CPU
- SOC
- Exynos 2100
- CPU
- Exynos 2100
- CORES
- 8
- FAMILY
- Cortex-X1 Cortex-A78 Cortex-A55
- CLUSTERS
- 1 x 2.91 GHz 3 x 2.81 GHz 4 x 2.21 GHz
- CLOCK_SPEED
- 400 - 2912 MHz
- REVISION
- r1p0 r1p0 r2p0
- TECHPROCESS
- 5 nm
GPU
- GPU_VENDOR
- ARM
- GPU_MODEL
- Mali-G78
- GPU_CLOCK
- 312 - 858 MHz
- GPU_VERSION
- 3.2 v1.r38p0-01eac0-mbs2v41_0.fbda7a2431aa2b386a4490f824f8fcc5
Memory & Storage
- RAM
- 8 GB LPDDR5
- FLASH
- UFS
Display
- RESOLUTION
- 2400x1080
- TOUCHSCREEN
- slsi_ts
Sensors
- ACCELEROMETER
- LSM6DSO
- GYROSCOPE
- LSM6DSO
- MAGNETOMETER
- AK09918C
- BAROMETER
- LPS22HHTR
- ALSPS
- Palm TMD4912
- FINGERPRINT_SENSOR
- qbt2608
Connectivity
- WIFI
- BCM4375B1
- NFC
- pn547
Audio & Power
- AUDIO
- cs35l41 cs35l41
- CHARGER
- mfc-charger pca9468-charger
Other
- LENS
- AK737X
- PMIC
- max77705
- OTHER
- unk01 unk01 unk0a unk0a unk0f unk0f unk0f unk10 unk10 unk10 unk1f unk23 unk25 unk28 unk29 unk2d unk2f unk36 unk50 unk51 unk51 unk59 unk62 unk69
Related devices
Other phones in our database with similar hardware — same brand or same SoC.
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