Samsung Galaxy A23 5G vs Samsung Galaxy S21 Ultra

Compared 2 smartphones : Samsung Galaxy A23 5G Manufactured in September, 2022, with display 6.6 with chipsetQualcomm Snapdragon 695, vs Samsung Galaxy S21 Ultra, Manufactured in February, 2021 with chipsetSamsung Exynos 2100. Below are specs, tests, pros and cons for each device

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy A23 5G
  • Lighter design: 197g vs 227g
Reasons to choose Samsung Galaxy S21 Ultra
  • Larger display: 6.8in
  • Higher pixel density: 515ppi
  • Newer Bluetooth version: 5.2 vs 5.1
  • Supports newer USB: 3.2 vs 2
  • Built-in eSIM

Versions

Available versions and configurations
Memory Options - 4/64 GB
- 4/128 GB
- 6/64 GB
- 6/128 GB
- 8/128 GB
- 12/128 GB
- 12/256 GB
- 12/512 GB
- 16/256 GB
- 16/512 GB

Review

Key Specs Samsung Galaxy A23 5G and Samsung Galaxy S21 Ultra
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison

Display

Display quality comparison
Type PLS TFT Dynamic AMOLED
Size 6.6 in 6.8 in
Resolution 1080x2408 pixels 1440x3200 pixels
Aspect ratio 20:9 20:9
Pixel density 400 ppi 515 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate No Yes (10-120 Hz)
Max brightness 450 nits 1500 nits
HDR support No Yes HDR10+
Screen-to-body ratio 82.7 % 89.5 %
Features DCI-P3 - DCI-P3
- Always-On Display
Display test
Peak brightness (auto)
Samsung Galaxy A23 5G
507 nits
Samsung Galaxy S21 Ultra
1019 nits
sRGB gamut99.9 %n/a
Response time22 msn/a
Contrast1442:1n/a

Design & Build

Design and ergonomics comparison
Height 165.4 mm (6.51 in) 165.1 mm (6.5 in)
Width 76.9 mm (3.03 in) 75.6 mm (2.98 in)
Thickness 8.4 mm (0.33 in) 8.9 mm (0.35 in)
Weight 197 g (6.95 oz) 227 g (8.01 oz)
Water resistance No IP68
Back panel Plastic Glass
Frame Plastic Metal
Colors - White
- Black
- Blue
- Yellow
- Black
- Silver
- Gray
- Blue
Fingerprint sensor Yes In-Button Yes In-Display
Screen-to-body ratio
Samsung Galaxy A23 5G
82.7 %
Samsung Galaxy S21 Ultra
89.5 %

Performance

Testing Samsung Galaxy A23 5G and Samsung Galaxy S21 Ultra In benchmarks
Processor
Chipset Qualcomm Snapdragon 695 Samsung Exynos 2100
Max Frequency 2200 MHz 2900 MHz
CPU Cores 8 (2 + 6) 8 (1 + 3 + 4)
Architecture - 6/1.8 (Kryo 660 Silver (Cortex-A55))
- 2/2.2 (Kryo 660 Gold (Cortex-A78))
- 4/2.2 (Cortex-A55)
- 3/2.81 (Cortex-A78)
- 1/2.91 (Cortex-X1)
Process TSMC Samsung
Transistor Size 6 nm 5 nm
Neural Processor Hexagon 686 Yes
Graphics Adreno 619 Mali-G78 MP14
GPU Cores 256 896
GPU Frequency 950 MHz 854 MHz
FLOPS 430.1 GFLOPS 1530.4 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy A23 5G
895
Samsung Galaxy S21 Ultra
1449
Geekbench 6 (Multi-Core)
Samsung Galaxy A23 5G
1943
Samsung Galaxy S21 Ultra
3892
Geekbench 6 (Single-Core)8951449
Geekbench 6 (Multi-Core)19433892
AnTuTu 10
AnTuTu 10
Samsung Galaxy A23 5G
417389
Samsung Galaxy S21 Ultra
843008
CPU152613232358
GPU80451256356
Memory79577163007
UX104748191217
NanoReview Score417389843008
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy A23 5G
1197
Samsung Galaxy S21 Ultra
5221
Max Surface Temp.43.9 °C40.8 °C
Stability99 %69 %
Graphics Test7 fps31 fps
Graphics Score11975221
PCMark 3.0
PCMark 3.0
Samsung Galaxy A23 5G
10034
Samsung Galaxy S21 Ultra
n/a
Writing score12734n/a
Web score9116n/a
Video editing4801n/a
Data manipulation8549n/a
NanoReview Score10034n/a

Memory

RAM
RAM Size - 4 GB
- 6 GB
- 8 GB
- 12 GB
- 16 GB
Memory Type LPDDR4X LPDDR5
Memory Frequency 2133 MHz 2750 MHz
Channels 2 2
Storage
Storage Capacity- 64 GB
- 128 GB
- 128 GB
- 256 GB
- 512 GB
Storage TypeUFS 2.2UFS 3.1
Memory CardMicroSDNo

Software

OS Android 12 (Upgradeable to Android 14) Android 11 (Upgradeable to Android 14)
OS Size n/a 26.4 GB
UI Skin One UI 6 One UI 6

Battery

Volume 5000 mAh 5000 mAh
Max Charging Power 25 W 25 W
Battery Type Li-ion Li-ion
Removable No No
Wireless Charging No Yes (15 W)
Reverse Charging No Yes (Wireless)
Fast Charging Yes (58% in 30 min) Yes (54% in 30 min)
Full Charge Time 1:08 h 1:11 h
Battery Life Test
Battery Life
Samsung Galaxy A23 5G
26:19
Samsung Galaxy S21 Ultra
22:05
Web Browsing10:23 h07:58 h
Video Playback15:03 h13:59 h
Games05:45 h05:14 h
Standby Mode134 h111 h

Main camera

Matrix 50 MP 108 MP
Photo resolution 8192x6144 pixels 12000x9000 pixels
Zoom Digital Optical, 10x
Flash LED Dual LED
Stabilization Optical Optical
8K Recording No Up to 24FPS
4K Recording No Yes (Up to 60 fps)
1080p Recording Yes (Up to 30 fps) Yes (Up to 60 fps)
Slow Motion 120 fps (720p) 960 fps (720p)
Wide-angle lens 123 ° 120 °
Lenses count Standard: 50 MP
Ultra-wide: 5 MP
Macro: 2 MP
Depth: 2 MP
Standard: 108 MP
Telephoto: 10 MP
Telephoto: 10 MP
Ultra-wide: 12 MP
Features - Bokeh effect
- Pro mode
- Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP108 MP
Aperturef/1.8f/1.8
Focal length26 mm26 mm
SensorSamsung S5KJN1Samsung S5KHM3
Sensor size1/2.761/1.33
Pixel size0.64 μm0.8 μm
AutofocusPhase autofocusLaser autofocus
StabilizationOpticalOptical
Telephoto
Matrixn/a10 MP
Aperturen/af/4.9
Focal lengthn/a240 mm
Sensorn/aSamsung S5K3J1
Sensor sizen/a1/2.65
Pixel sizen/a1.22 μm
Stabilizationn/aOptical
Ultra-wide lens
Matrix5 MP12 MP
Aperturef/2.2f/2.2
Focal length13 mm13 mm
SensorGalaxyCore 5035Sony IMX563
Sensor size1/51/2.55
Pixel sizen/a1.4 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Samsung Galaxy A23 5G
n/a
Samsung Galaxy S21 Ultra
121
Video quality
Samsung Galaxy A23 5G
n/a
Samsung Galaxy S21 Ultra
100
Overall camera score
Samsung Galaxy A23 5G
n/a
Samsung Galaxy S21 Ultra
115
Bokehn/a70
Previewn/a67
Zoomn/a106

Front camera

Matrix 8 MP 40 MP
Photo resolution 3264x2448 pixels 7864x5200 pixels
Aperture f/2.2 f/2.2
Focal length 25 mm 26 mm
Sensor GalaxyCore Samsung S5KGH1
Sensor size 1/4.0 1/2.65
Pixel size 1.12 μm 0.7 μm
Autofocus No Phase autofocus
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 2160p (4K) at 60 fps
TOF 3D sensor No No
Selfie camera DxOMark results
Photo quality
Samsung Galaxy A23 5G
n/a
Samsung Galaxy S21 Ultra
133
Video quality
Samsung Galaxy A23 5G
n/a
Samsung Galaxy S21 Ultra
140

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 6E (802.11 a/b/g/n/ac/ax)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
- Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.1 5.2
Bluetooth features LE, A2DP LE, A2DP
USB type USB Type-C USB Type-C
USB version 2 3.2
USB features - Charging
- USB Storage Mode
- OTG
- Charging
- USB Storage Mode
- USB-Host mode
- OTG
GPS - GPS
- GLONASS
- Galileo
- GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port No No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoYes
Hybrid SlotNoNo
2G BandsGSM 850 MHz, 900 MHz, 1800 MHz, 1900 MHzGSM 850, 900, 1800, 1900 MHz
3G BandsUMTS Band I (2100), Band II (1900), Band IV (1700/2100), Band V (850), Band VIII (900)WCDMA Band 1, 2, 4, 5, 8
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B12/B13/B20/B25/B26/B38/B39/B40/B41/B46/B48/B66/B71)LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B32/B38/B39/B40/B41/B66)
LTE category1824
5G SupportYesYes

Sound

Speakers Mono Stereo
3.5 mm Jack Yes No
FM Radio No No
Dolby Atmos Yes Yes
Speaker Test
Max Volume
Samsung Galaxy A23 5G
85.9 dB
Samsung Galaxy S21 Ultra
88 dB

Other

Class Mid-range Flagship
Announced August, 2022 yr January, 2021 yr
Release Date September, 2022 yr February, 2021 yr
Launch Price ($) 300 1200
Sensors - Barometer
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
- Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included No n/a
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Samsung Galaxy S21 Ultra the clear winner in this comparison.

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