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Price and specifications on Samsung Galaxy S21 5G

Global  •  8GB  •  128GB  •  SM-G991B
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Summary

Technical sheet of Samsung Galaxy S21 5G

Description

Pros
Cons
  • Camera quality
  • Display quality
  • Wireless charging
  • NFC
  • Dust and Water Resistance
  • Short battery life
  • Price

Finding the best price for the Samsung Galaxy S21 5G is no easy task. Here you will find where to buy the Samsung Galaxy S21 5G at the best price. Prices are continuously tracked in over 140 stores so that you can find a reputable dealer with the best price

Brand

Brand Samsung
Aliases SM-G991B
Best Sellers
Smartphones by Samsung

Samsung Galaxy S21 5G prices

Versions and prices
Samsung Galaxy S21 5G • Global · 8GB · 128GB · SM-G991B $ 205
Samsung Galaxy S21 5G • Global · 8GB · 256GB · SM-G991B $ 238
Samsung Galaxy S21 5G • N. America · 8GB · 128GB · SM-G991U $ 289
Samsung Galaxy S21 5G • N. America · 8GB · 256GB · SM-G991U
Samsung Galaxy S21 5G • China · 8GB · 128GB · SM-G9910
Samsung Galaxy S21 5G • China · 8GB · 256GB · SM-G9910 $ 761
Samsung Galaxy S21 5G • Korea · 8GB · 256GB · SM-G991N
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Release Date

Release dateJanuary 2021, 5 years ago

Related

Predecessor
Successors
Similar name

Design & Materials of Samsung Galaxy S21 5G

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Structure

Size
71.2 mm•151.7 mm•7.9 mm
See more details
 Print 3D Model
Weight 169 g
Usable surface 88 %
Materials Plastic , Aluminium
Resistance certificates (dust, water) IP68
Colors
White
Pink
Gray
Violet

Screen

Diagonal
6.2"
See more details
Type AMOLED
Dynamic Amoled 2X
Aspect Ratio 20:9
Resolution 1080 x 2400 px • FHD+
Density 424 ppi • Very high density
Others
Best Mobiles with 6 inch screenBest mobile phones with AMOLED screen
Others
Audio
Stereo Speakers by AKG
Opinions on design and display
Is it a drop-resistant and scratch-resistant smartphone?
8.1

91 reviews

Do you think it's a nice phone?
9.2

91 reviews

Is it comfortable?
9.4

91 reviews

Can you see it well in the sunlight?
8.8

91 reviews

View all 91 opinions

Performance & Hardware of Samsung Galaxy S21 5G

Processor

Model Samsung Exynos 2100
CPU 1x Cortex•X1 2,91 GHz + 3x Cortex•A78 2,81 GHz + 4x Cortex•A55 2,21 GHz.
Type Octa-Core
Nanometer 5 nm
Frequency 2.91 GHz
64 Bits Yes
More smartphones with Exynos 2100 processor

Graphics

GPU ARM Mali-G78 MP14

RAM

RAM 8 GB
Type RAM LPDDR5
More smartphones with 8GB RAM memory

Antutu

Score
899.100 • Antutu v11
Overall performance better than 83% of devices
See more details

Storage

Capacity 128 GB
Type UFS Storage 3.1
SD Slot No
More smartphones with 128GB of internal storage

Security

Fingerprint Yes, in screen

Sensors

Fingerprint Yes
Proximity Yes
Light sensor Yes
Accelerometer Yes
Compass Yes
Gyroscope Yes
Barometer Yes
Hall Yes
Geomagnetic Yes
Audio
Audio
  • Dolby Atmos
  • Noise cancellation microphone
  • Stereo Speakers
Others
Notifications LED --
Cooling system No
Gaming buttons No
Opinions on performance
Does it have good sound?
8.8

91 reviews

Does it work smoothly in everyday use?
8.8

91 reviews

What's your experience been with demanding games?
8.1

91 reviews

View all 91 opinions

Camera of Samsung Galaxy S21 5G

Triple rear camera

Standard
1
Resolution 12 Mpx
Aperture ƒ/ 1.8
Sensor Sony IMX555
Type CMOS
Sensor size 1/1.76"
Pixel size 1.80 µm
Wide Angle + Macro
2
Resolution
12.2 Mpx
Aperture
ƒ/ 2.2
Sensor
Sony IMX563
Type
CMOS
Sensor size
1/2.55"
Pixel size
1.40 µm
Telephoto + portrait
3
Resolution
64 Mpx
Aperture
ƒ/ 2.0
Sensor
Samsung Bright S5KGW2
Type
ISOCELL
Sensor size
1/1.72"
Pixel size
0.80 µm
Flash LED
Optical Stabilisation Yes
Slow Motion Video Yes, 960 fps
Features
  • 4K Video
  • 8K Video
  • Digital zoom
  • Optical zoom
  • Triple camera
  • Digital image stabilization
  • Optical Stabilization (OIS)
  • Autofocus
  • Touch focus
  • Continuous autofocus
  • Manual focus
  • Phase detection autofocus (PDAF)
  • Continuous shooting
  • Geotagging
  • Panorama
  • HDR
  • Face detection
  • White balance settings
  • ISO settings
  • Exposure compensation
  • Scene mode
  • Self-timer
  • RAW
  • Night Mode
More smartphones with IMX555 lens modelMore smartphones with LED

Selfie

Resolution 10 Mpx
Aperture ƒ/ 2.2
Sensor Sony IMX374
Type CMOS
Sensor size 1/3.2"
Pixel size 1.22 µm
Others
Extra
  • Ultra wide angle lens 120º
  • Ultra wide angle Video 4K HDR10+ @ 60fps
  • Ultra wide angle Dual Pixel Autofocus
  • Telephoto lens with OIS
  • 3x hybrid zoom
See more details
DxOMark Score
DxOMark Score
111
Mobile
118
Photo
90
Video
132
Selfie
125
Photo
145
Video
View on DxOMark MobileView on DxOMark Selfie
Opinions on the camera
Quality of daytime photos
9.2

91 reviews

Quality of nighttime photos
8.2

91 reviews

Quality of selfies
8.5

91 reviews

Does it have a powerful flash?
8.8

91 reviews

View all 91 opinions
Frequency Checker

Network compatibility

Go to tool

Connectivity of Samsung Galaxy S21 5G

Bands

5G n1 (2100), n3 (1800), n5 (850), n7 (2600), n8 (900), n20 (800), n28b (700), n28a (700), n38 (2600), n40 (2300), n41 (2500), n66 (1700), n77 (3700), n78 (3500)
4G LTE B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B12 (700), B13 (700), B17 (700), B18 (800), B19 (800), B20 (800), B25 (1900+), B26 (850), B28b (700), B28a (700), B32 (1500), B38 (TDD 2600), B39 (TDD 1900), B40 (TDD 2300), B41 (TDD 2500), B66 (1700/2100)
3G B1 (2100), B2 (1900), B4 (1700/2100 AWS A-F), B5 (850), B8 (900)
2G B2 (1900), B3 (1800), B5 (850), B8 (900)

SIM card

TypeDual SIM Dual Standby (Nano SIM + Nano SIM)

SIM cards (MiniSIM) can be cut to MicroSIM, MicroSIM can be cut to NanoSIM and a SIM can even be cut to a NanoSIM (although not recommended). Download this SIM Cutting Template and forget about having to ask your operator for a new SIM...

Wi-Fi

Standards 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac, WiFi 6 (802.11ax)
Others
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct
  • Wi-Fi Display

Bluetooth

Version Bluetooth 5.0 LELow energy consumption
Profiles
  • A2DP (Advanced Audio Distribution Profile)
  • AVRCP (Audio/Visual Remote Control Profile)
  • DIP (Device ID Profile)
  • HFP (Hands-Free Profile)
  • HID (Human Interface Profile)
  • HSP (Headset Profile)
  • LE (Low Energy)
  • MAP (Message Access Profile)
  • PAN (Personal Area Networking Profile)
  • OPP (Object Push Profile)
  • PBAP/PAB (Phone Book Access Profile)
  • ANT+
  • APT-x
  • SBC

Navigation

Supports GPS, A-GPS, GLONASS, Beidou, Galileo, GPS (L1+L5), Galileo (E1+E5a)

USB

Charging Yes
Mass Storage Yes
USB On-The-Go (OTG) Yes
USB Type C Yes
USB Host 3.1 Yes

SAR

European measurement 0.460 W/Kg on head, 1.510 W/Kg on body

The European Union sets a limit of 2 W/kg averaged over 10 grams of tissue.

What is the SAR of Samsung Galaxy S21 5G?
Others
NFC
Yes
Audio Jack
No
Radio FM
No
Computer sync
Yes
OTA sync
Yes
Tethering.
Yes
VoLTE
Yes
ANT+
Yes
Opinions on connectivity
Does it have good coverage for calls?
8.8

91 reviews

Quality of the GPS
8.9

91 reviews

And the WiFi?
9.0

91 reviews

View all 91 opinions

Battery of Samsung Galaxy S21 5G

Battery
Capacity
4000 mAh
See more details
Type Li-Polymer
Fast charge Yes , 25.0W
Others
Extra
  • Wireless charging 15W
  • Reverse wireless charging 4.5W
  • No charger in-box
Opinions on the battery
How long does the battery last?
  • 2%
    Two days or more
  • 9%
    More than one day
  • 29%
    One day
  • 45%
    Less than a day
  • 15%
    Less than half day

91 reviews

View all 91 opinions

Software of Samsung Galaxy S21 5G

Software

Operating System Android 14 Upside-down cake
Android 14
Google Services With Google Mobile Services
Widevine L1 Yes
Updates
  • OS updates: 2 years
  • Security updates: 4 years
More smartphones with Android 14 operating system
Opinions on the software
Did it come with preinstalled applications?
  • 3%
    It comes with a clean operating system
  • 85%
    It has preinstalled apps but they don't bother me
  • 11%
    It has preinstalled apps that I can't uninstall

91 reviews

Do you regularly receive updates?
  • 65%
    Every two months or less
  • 33%
    Every six months
  • 1%
    Once a year
  • 1%
    Never

91 reviews

View all 91 opinions

Reviews

Video reviews

Reviews
Marques Brownlee Videos Galaxy S21 Review: Would You Notice?
Galaxy s21 review: would you notice?
Marques Brownlee
Unboxing
Unbox Therapy Videos Samsung Galaxy S21 Ultra Unboxing + Galaxy S21 and S21+
Samsung galaxy s21 ultra unboxing + galaxy s21 and s21+
Unbox Therapy
Comparisons
Techwithusama Videos Samsung Galaxy S21 FE vs A52s vs S20 FE 5G vs S21 vs S21 Plus Battery Test
Samsung galaxy s21 fe vs a52s vs s20 fe 5g vs s21 vs s21 plus battery test
Techwithusama
Read More

User reviews about the Samsung Galaxy S21 5G

User score

8.5
  • 68
  • 17
  • 3
  • 1
  • 2
91 reviews
  • Screen8.9
  • Performance8.6
  • Camera8.7
  • Connectivity8.9
  • Battery5.3
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Last update
May 2, 2026
State
  • Rumor
  • Presell
  • New
  • On Sale
Latest changes
  • New opinion 1 month ago
  • AnTuTu Version 5 months ago
  • AnTuTu 5 months ago
  • Version 5 months ago
8.0
Ki Cost-effective
Score
  • 7.1 Design & Materials
  • 7.1 Performance & Hardware
  • 7.9 Camera
  • 8.3 Connectivity
  • 5.3 Battery
What is a Ki score?
Ki is an automatic score based on the specifications and prices of devices. It is calculated using over 200 variables to rank smartphones, tablets and other devices from best to worst.
How do we calculate the Ki?

In this case, to determine the score we evaluate 5 general aspects:

  • Design and screen
  • Hardware and performance
  • Camera
  • Connectivity
  • Battery

Once these 5 factors have been rated, we introduce the price variable. This means that any two devices with the same ratings get a different Ki score for quality vs price.

Even a device objectively worse than another may have a higher Ki score if it has a better price.

Does the Ki score change?

The Ki varies as time goes by. As new devices with better specifications enter the market the Ki score of older devices will go down, always being compensated of their decrease in price.