Samsung Galaxy A21 vs Samsung Galaxy S21
Short Description
Samsung Galaxy A21
Screen size: 6.4" / Resolution: 720 x 1600 px / Main camera: 13 MP & 5 MP & 2 MP & 2 MP / Front camera: 8MP / RAM: 3GB / Battery power: 4000 mAh / Internal storage: 32GB / SIM cards: 1 SIM
Samsung Galaxy S21
Screen size: 6.2" / Resolution: 1080 x 2400 px / Main camera: 64 MP & 12 MP & 12 MP / Front camera: 10MP / RAM: 8GB / Battery power: 4000 mAh / Has 5G support: ✔ / Internal storage: 128GB, 256GB / SIM cards: 1 SIM, 1 eSIM
Key Differences
Samsung Galaxy A21
Samsung Galaxy S21
How is Samsung Galaxy A21 better than Samsung Galaxy S21?
Has a larger display diagonal: 6.4" vs 6.2"
Samsung Galaxy A21
Samsung Galaxy S21
How is Samsung Galaxy S21 better than Samsung Galaxy A21?
Faster CPU speed: 1 x 2.9 GHz & 3 x 2.8 GHz & 4 x 2.2 GHz vs 4 x 2.3 GHz & 4 x 1.8 GHz
More RAM memory capacity in max option: 8GB vs 3GB
AnTuTu score is about 595% higher
More internal storage in max option: 128GB, 256GB vs 32GB
More megapixels main camera: 64 MP & 12 MP & 12 MP vs 13 MP & 5 MP & 2 MP & 2 MP
More megapixels front camera: 10MP vs 8MP
Better display resolution: 1080 x 2400 px vs 720 x 1600 px
Lighter: 171 g (6.03 ounces) vs 193 g (6.81 ounces)
Narrower: 71.2 mm (2.8 inches) vs 76.7 mm (3.02 inches)
Shorter: 151.7 mm (5.97 inches) vs 167.8 mm (6.61 inches)
More color options: Phantom Gray, Phantom White, Phantom Violet, Phantom Pink vs Black
The phone is 7 months newer
Size Comparison
Samsung Galaxy A21
Samsung Galaxy S21
Height
167.8 mm
(6.61 inches)
Width
76.7 mm
(3.02 inches)
Thickness
8.1 mm
(0.32 inches)
Screen size
6.4"
Weight
193 g
(6.81 ounces)
6.4"
6.2"
Height
151.7 mm
(5.97 inches)
Width
71.2 mm
(2.8 inches)
Thickness
7.9 mm
(0.31 inches)
Screen size
6.2"
Weight
171 g
(6.03 ounces)
Height
167.8 mm
(6.61 inches)
Width
76.7 mm
(3.02 inches)
Thickness
8.1 mm
(0.32 inches)
Screen size
6.4"
Weight
193 g
(6.81 ounces)
Height
151.7 mm
(5.97 inches)
Width
71.2 mm
(2.8 inches)
Thickness
7.9 mm
(0.31 inches)
Screen size
6.2"
Weight
171 g
(6.03 ounces)
3D comparison
Samsung Galaxy A21
Samsung Galaxy S21
Samsung Galaxy A21
Samsung Galaxy S21
Expert Score
Score 4.0
Score 3.9
Samsung Galaxy A21
Samsung Galaxy S21
Samsung Galaxy A21
Samsung Galaxy S21
Score 4.0
Score 3.9
Smartprix
Samsung Galaxy A21
Samsung Galaxy S21
Vote for Your option
Samsung Galaxy A21
Vote for Your option
Samsung Galaxy S21
Benchmarks
AnTuTu Score
Samsung Galaxy A21
130,115
Samsung Galaxy S21
903,780 +594.6%
The score reflects a device's overall performance by summing up results from tests of RAM speed, CPU, and 2D/3D graphics.
Geekbench 6 · Multi-Core
Samsung Galaxy A21
745
Samsung Galaxy S21
3,339 +348.19%
Measures the aggregate performance of all processor cores in a device, simulating tasks optimized for multi-threaded processing.
Geekbench 6 · Single-Core
Samsung Galaxy A21
165
Samsung Galaxy S21
1,334 +708.48%
Measures the performance of a single processor core by assessing how efficiently the device handles single-threaded processing-based tasks.
Geekbench 5 · Multi-Core
Samsung Galaxy A21
691
Samsung Galaxy S21
3,715 +437.63%
Measures the aggregate performance of all processor cores in a device, simulating tasks optimized for multi-threaded processing in Geekbench 5.
Geekbench 5 · Single-Core
Samsung Galaxy A21
176
Samsung Galaxy S21
1,093 +521.02%
Measures the performance of a single processor core in a device, evaluating its efficiency in handling single-threaded tasks in Geekbench 5.
Battery Performance
Samsung Galaxy A21
Samsung Galaxy S21
Battery Life
Charging timeAbout Products
Samsung Galaxy A21
The Samsung Galaxy A21 is a budget-friendly smartphone that delivers a solid performance for everyday tasks. It features a 6.5-inch Infinity-O display, providing vibrant colors and an immersive viewing experience, making it ideal for watching videos and browsing social media. Powered by an octa-core processor and 3GB of RAM, the A21 handles multitasking and apps efficiently.
The quad-camera system on the rear includes a 16MP main sensor, an 8MP ultra-wide, and 2MP depth and macro lenses, offering versatility for photography. The 13MP front camera ensures clear selfies and video calls. The 4,000mAh battery ensures all-day use, and with 15W fast charging, you can quickly power up when needed.
Samsung Galaxy S21
The Samsung Galaxy S21 is a sleek, high-performance smartphone designed to meet modern needs. It features a 6.2-inch Dynamic AMOLED 2X display with a 120Hz refresh rate, providing stunning visuals and smooth scrolling, perfect for gaming and streaming. Powered by the Snapdragon 888 (or Exynos 2100, depending on region) and up to 8GB of RAM, it delivers fast, efficient multitasking and performance.
The 64MP triple-camera system captures high-quality photos and 8K video, while advanced AI enhances shots in various lighting conditions. With 5G connectivity, a 4000mAh battery supporting fast and wireless charging, and a sleek, durable design, the Galaxy S21 offers premium features in a compact package.
Technical Specifications
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Specs
Samsung Galaxy A21
Samsung Galaxy S21
Design
Weight
193 g (6.81 ounces)
171 g (6.03 ounces)
Thickness
8.1 mm (0.32 inches)
7.9 mm (0.31 inches)
Width
76.7 mm (3.02 inches)
71.2 mm (2.8 inches)
Height
167.8 mm (6.61 inches)
151.7 mm (5.97 inches)
Is weather-sealed (splashproof)
-
✔
Ingress Protection (IP) rating
-
IP68
Waterproof depth rating
-
1.5 m
Volume
104.25 cm³
85.33 cm³
Is dustproof and water-resistant
-
✔
Color options
Black
Phantom Gray, Phantom White, Phantom Violet, Phantom Pink
French Repairability Index
-
1
Display
Screen size
6.4"
6.2"
Display type
IPS, LCD
OLED/AMOLED
Pixel density
274 ppi
421 ppi
Resolution
720 x 1600 px
1080 x 2400 px
Refresh rate
-
120Hz
Touch sampling rate
-
240Hz
Brightness (typical)
-
1300 nits
Has branded damage-resistant glass
-
✔
Gorilla Glass version
-
Gorilla Glass Victus
Supports HDR10
-
✔
Supports HDR10+
-
✔
Always-On Display
-
✔
Contrast ratio
-
3000000:1
Has a touch screen
✔
✔
Performance
Internal storage
32GB
128GB, 256GB
RAM
3GB
8GB
Android version
Android 10
Android 11
CPU speed
4 x 2.3 GHz & 4 x 1.8 GHz
1 x 2.9 GHz & 3 x 2.8 GHz & 4 x 2.2 GHz
GPU clock speed
650 MHz
-
Has integrated LTE
✔
✔
RAM speed
1600 MHz
3200 MHz
Semiconductor size
12 nm
5 nm
Supports 64-bit
✔
✔
DirectX version
DirectX 10
DirectX 12
Has integrated graphics
✔
✔
OpenGL version
3.2
-
OpenGL ES version
3.2
3.2
Uses big.LITTLE technology
✔
✔
CPU threads
8 threads
8 threads
Uses HMP
✔
✔
Has TrustZone
✔
✔
Maximum memory bandwidth
14.9 GB/s
51.2 GB/s
OpenCL version
1.2
2
EMMC version
5.1
-
DDR memory version
4
5
Maximum memory amount
6GB
16GB
Thermal Design Power (TDP)
5W
9W
Release date
2020
2021
Has NX bit
✔
✔
Has an external memory slot
✔
-
GPU turbo
680 MHz
854 MHz
Memory channels
-
4
Maximum amount of external memory supported
128GB
-
Bits executed at a time
128
-
VFP version
4
-
Cameras
Main camera
13 MP & 5 MP & 2 MP & 2 MP
64 MP & 12 MP & 12 MP
Front camera
8MP
10MP
Has built-in optical image stabilization
-
✔
Video recording (main camera)
1080 x 30 fps
4320 x 24 fps
Wide aperture (main camera)
-
f/1.8 & f/2 & f/2.2
Has a dual-tone LED flash
-
✔
Has a BSI sensor
-
✔
Has phase-detection autofocus for photos
✔
✔
Has continuous autofocus when recording movies
-
✔
Supports slow-motion video recording
-
✔
Has a built-in HDR mode
✔
✔
Has a flash
✔
✔
Has manual exposure
-
✔
Has a dual-lens (or multi-lens) main camera
✔
✔
Optical zoom
-
1.1x
Number of flash LEDs
1
2
Has a CMOS sensor
✔
✔
Has manual ISO
✔
✔
Has a serial shot mode
✔
✔
Has manual focus
-
✔
Has a front camera
✔
✔
Has manual white balance
✔
✔
Shoots raw
-
✔
Has touch autofocus
✔
✔
Has manual shutter speed
-
✔
Can create panoramas in-camera
✔
✔
Wide aperture (front camera)
f/2.0
f/2.2
Has timelapse function
-
✔
Pixel size (main camera)
-
1.8 µm & 0.8 µm & 1.4 µm
Operating system
Has location privacy options
-
✔
Has camera/microphone privacy options
-
✔
Has theme customization
✔
✔
Has dark mode
✔
✔
Has Wi-Fi password sharing
-
✔
Has focus modes
✔
✔
Has customizable notifications
✔
✔
Supports split screen
✔
✔
Supports instant markup
✔
✔
Supports PiP and PaP
✔
✔
Can be used as a PC
-
✔
Has sharing intents
✔
✔
Has a child lock
✔
✔
Is free and open source
✔
✔
Tracks the current position of a mobile device
✔
✔
Is a multi-user system
✔
✔
Supports widgets
✔
✔
More languages supported
125
125
Has offline voice recognition
✔
✔
The browser has word wrap
✔
✔
Has voice commands
✔
✔
Battery
Battery power
4000 mAh
4000 mAh
Has wireless charging
-
✔
Supports fast charging
✔
✔
Charging speed
-
25W
Wireless charging speed
-
15W
Has reverse wireless charging
-
✔
Reverse wireless charging speed
-
4.5W
Has a battery level indicator
✔
✔
Has a rechargeable battery
✔
✔
Audio
Has stereo speakers
-
✔
Has LDAC
✔
-
Has aptX
✔
-
Number of microphones
2
2
Has a socket for a 3.5 mm audio jack
✔
-
Has a radio
✔
-
Features
Has 5G support
-
✔
Wi-Fi version
Wi-Fi 4 (802.11n)
Wi-Fi 6 (802.11ax), Wi-Fi 5 (802.11ac), Wi-Fi 4 (802.11n)
Download speed
150 MBits/s
3000 MBits/s
Upload speed
50 MBits/s
422 MBits/s
Has USB Type-C
✔
✔
USB version
2
3.2
Has NFC
✔
✔
SIM cards
1 SIM
1 SIM, 1 eSIM
Has a fingerprint scanner
✔
✔
Bluetooth version
5
5.1
Has a gyroscope
✔
✔
Has GPS
✔
✔
Has a compass
✔
✔
Supports Wi-Fi
✔
✔
Has a cellular module
✔
✔
Has a barometer
-
✔
Supports Galileo
-
✔
Has an accelerometer
✔
✔
Supports ant+
-
✔
Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.
Vote for Your option
Samsung Galaxy A21
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Samsung Galaxy S21
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