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General characteristics Samsung Galaxy S21 SM-G991 declared by the manufacturer. The high-resolution pictures of the motherboard and electronic components.
Main and additional circuit boards Samsung Galaxy S21 SM-G991
Side 1
Characteristics
Features
Type
Smartphone
OS
Android 11
SIM type/size
Nano SIM + eSIM
SIM
Dual SIM / Single SIM
Dimensions
151.7 x 71.2 x 7.9 mm (5.97 x 2.80 x 0.31 in)
Weight
169 g (5.96 oz)
Display
Display type
Dynamic AMOLED
Size
6.2 inches
Resolution
1080 x 2400 pixels, 20:9 ratio
PPI density
421
Protection
Corning Gorilla Glass Victus
Multimedia
Main camera
12 MP / 64 MP / 12 MP
Main camera Video
4320p, 24fps
Front (selfie) camera
10 MP
Front (selfie) camera Video
2160p, 60fps
Audio
MP3, AAC, WAV, WMA, FM-radio
Headphone jack
Mini jack 3.5 mm
Network
Technology
GSM/3G/4G LTE
LTE
Yes, Band 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71
Interfaces
Wi-Fi 802.11ac, Bluetooth 5.0, NFC
Satellite navigation
GPS with A-GPS, GLONASS, BDS, GALILEO
Processor and Memory
System on a chip
Samsung Exynos 2100
CPU
Octa-core 1x Cortex-X12.9 GHz + 3xCortex-A78 2.80 GHz + 4x Cortex-A55 2.2 GHz
GPU
Mali-G78 MP14
Internal memory
256 GB
RAM
8 GB
Card slot
No
Battery
Battery capacity
Li-Ion 4000 mAh
Charging port
USB Type-C 3.2
Other
Announced
2021, January 14
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Based on our experience, we made a selection of the most common malfunctions of mobile devices and evaluated the difficulty of performing repairs for each of them. The final evaluation of the difficulty of the repair is the sum of all the parameters.
This difficulty rating is also applicable for all models Samsung Galaxy S21 SM-G991 released for markets in different countries.
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