Home Phone comparison OnePlus Ace 2 and Samsung Galaxy S21 - Which is better?

OnePlus Ace 2 vs Samsung Galaxy S21

72 out 100
OnePlus Ace 2
VS
65 out 100
Samsung Galaxy S21
OnePlus Ace 2
Samsung Galaxy S21

Compared 2 smartphones : OnePlus Ace 2 Manufactured in February, 2023, with display 6.74 with chipsetQualcomm Snapdragon 8 Plus Gen 1, vs Samsung Galaxy S21, Manufactured in February, 2021 with chipsetSamsung Exynos 2100. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose OnePlus Ace 2
  • Larger display: 6.74in
  • Higher pixel density: 450ppi
  • Higher battery capacity: 5000mAh vs 4000mAh
  • Newer Bluetooth version: 5.3 vs 5
  • Supports DisplayPort
  • Infrared port
  • Includes charger
Reasons to choose Samsung Galaxy S21
  • Lighter design: 169g vs 204g
  • Supports newer USB: 3.2 vs 2
  • Built-in eSIM

Versions

Available versions and configurations
Memory Options - 12/256 GB
- 16/256 GB
- 16/512 GB
- 18/512 GB		 - 8/128 GB
- 8/256 GB

Review

Key Specs OnePlus Ace 2 and Samsung Galaxy S21
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
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Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
OnePlus Ace 2
vs
Samsung Galaxy S21

Display

Display quality comparison
Type AMOLED Dynamic AMOLED
Size 6.74 in 6.2 in
Resolution 1240x2772 pixels 1080x2400 pixels
Aspect ratio 20.1:9 20:9
Pixel density 450 ppi 421 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes Yes (48-120 Hz)
Max brightness 500 nits 800 nits
HDR support Yes HDR10+ Yes HDR10+
Touch Sampling Rate 360 Hz n/a
Screen-to-body ratio 90.1 % 85.9 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - DCI-P3
- Always-On Display
Display test
Peak brightness (auto)
OnePlus Ace 2
n/a
Samsung Galaxy S21
854 nits
sRGB gamutn/a99.5 %
PWM (Flicker)n/a240 Hz
Response timen/a5 ms
Contrastn/a∞ Infinite
Sources: NotebookCheck [Samsung Galaxy S21]

Design & Build

Design and ergonomics comparison
Height 163.4 mm (6.43 in) 151.7 mm (5.97 in)
Width 74.3 mm (2.93 in) 71.2 mm (2.8 in)
Thickness 8.7 mm (0.34 in) 7.9 mm (0.31 in)
Weight 204 g (7.2 oz) 169 g (5.96 oz)
Water resistance No IP68
Cooling system Vapor chamber n/a
Back panel Glass Plastic
Frame Metal Metal
Colors - Black
- Blue		 - White
- Gray
- Pink
- Purple
Fingerprint sensor Yes In-Display Yes In-Display
Screen-to-body ratio
OnePlus Ace 2
90.1 %
Samsung Galaxy S21
85.9 %

Performance

Testing OnePlus Ace 2 and Samsung Galaxy S21 In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Plus Gen 1 Samsung Exynos 2100
Max Frequency 3190 MHz 2900 MHz
CPU Cores 8 (1 + 3 + 4) 8 (1 + 3 + 4)
Architecture - 4/2 (Cortex-A510)
- 3/2.75 (Cortex-A710)
- 1/3.2 (Cortex-X2)		 - 4/2.2 (Cortex-A55)
- 3/2.81 (Cortex-A78)
- 1/2.91 (Cortex-X1)
Process TSMC Samsung
Transistor Size 4 nm 5 nm
Neural Processor Hexagon Yes
Graphics Adreno 730 Mali-G78 MP14
GPU Cores 1024 896
GPU Frequency 900 MHz 854 MHz
FLOPS 1843.2 GFLOPS 1530.4 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
OnePlus Ace 2
1804
Samsung Galaxy S21
1331
Geekbench 6 (Multi-Core)
OnePlus Ace 2
4506
Samsung Galaxy S21
3593
Geekbench 6 (Single-Core)18041331
Geekbench 6 (Multi-Core)45063593
Sources: Geekbench v6 [OnePlus Ace 2]
AnTuTu 10
AnTuTu 10
OnePlus Ace 2
1292839
Samsung Galaxy S21
903780
CPU365027253391
GPU481162281676
Memory203356158352
UX243294210361
NanoReview Score1292839903780
3DMark Wild Life
3DMark Wild Life
OnePlus Ace 2
10289
Samsung Galaxy S21
5715
Max Surface Temp.n/a38.9 °C
Stability73 %66 %
Graphics Test61 fps34 fps
Graphics Score102895715
Sources: 3DMark [OnePlus Ace 2], [Samsung Galaxy S21]
PCMark 3.0
PCMark 3.0
OnePlus Ace 2
n/a
Samsung Galaxy S21
13123
Writing scoren/a16101
Web scoren/a11909
Video editingn/a7097
Data manipulationn/a10153
NanoReview Scoren/a13123

Memory

RAM
RAM Size - 12 GB
- 16 GB		 8 GB
Memory Type LPDDR5X LPDDR5
Memory Frequency n/a 2750 MHz
Channels 4 2
Storage
Storage Capacity- 256 GB
- 512 GB		- 128 GB
- 256 GB
Storage TypeUFS 3.1UFS 3.1
Memory CardNoNo

Software

OS Android 13 Android 11 (Upgradeable to Android 14)
OS Size n/a 28.1 GB
UI Skin ColorOS 13.1 One UI 6.0

Battery

Volume 5000 mAh 4000 mAh
Max Charging Power 100 W 25 W
Battery Type Li-Po Li-ion
Removable No No
Wireless Charging No Yes (15 W)
Reverse Charging No Yes (Wireless)
Fast Charging Yes (50% in 9 min) Yes (55% in 50 min)
Full Charge Time 0:26 h 1:35 h
Battery Life Test
Battery Life
OnePlus Ace 2
n/a
Samsung Galaxy S21
17:54
Web Browsingn/a06:01 h
Video Playbackn/a11:06 h
Gamesn/a04:21 h
Standby Moden/a95 h

Main camera

Matrix 50 MP 12 MP
Photo resolution 8192x6144 pixels 4000x3000 pixels
Zoom Digital Optical, 1.1x
Flash LED Dual LED
Stabilization Optical Optical
8K Recording No Up to 24FPS
4K Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 480 fps (720p) 960 fps (720p)
Wide-angle lens 120 ° 120 °
Lenses count Standard: 50 MP
Ultra-wide: 8 MP
Macro: 2 MP		 Standard: 12 MP
Telephoto: 64 MP
Ultra-wide: 12 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP12 MP
Aperturef/1.8f/1.8
Focal length24 mm26 mm
SensorSony IMX890Sony IMX555
Sensor size1/1.561/1.76
Pixel size1 μm1.8 μm
AutofocusPhase autofocusPhase autofocus (Dual Pixel)
StabilizationOpticalOptical
Telephoto
Matrixn/a64 MP
Aperturen/af/2.0
Focal lengthn/a28 mm
Sensorn/aSamsung Bright S5KGW2
Sensor sizen/a1/1.72
Pixel sizen/a0.8 μm
Stabilizationn/aOptical
Ultra-wide lens
Matrix8 MP12 MP
Aperturef/2.2f/2.2
Focal length16 mm13 mm
SensorOmnivision OV08D10Sony IMX563
Sensor size1/4.01/2.55
Pixel size1.12 μm1.4 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
OnePlus Ace 2
n/a
Samsung Galaxy S21
129
Video quality
OnePlus Ace 2
n/a
Samsung Galaxy S21
137
Overall camera score
OnePlus Ace 2
n/a
Samsung Galaxy S21
133
Bokehn/a70
Previewn/a72
Zoomn/a126
Sources: DxOMark [Samsung Galaxy S21]

Front camera

Matrix 16 MP 10 MP
Photo resolution 4608x3456 pixels 3872x2592 pixels
Aperture f/2.4 f/2.2
Focal length 26 mm 26 mm
Sensor Samsung S5K3P9 Sony IMX374
Sensor size 1/3.09 1/3.24
Pixel size 1 μm 1.22 μm
Autofocus No Phase autofocus (Dual Pixel)
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 2160p (4K) at 60 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 6 (802.11 a/b/g/n/ac/ax) Wi-Fi 6 (802.11 a/b/g/n/ac/ax)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- 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 5.3 5
Bluetooth features LE 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
DisplayPort Yes n/a
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port Yes No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoYes
Hybrid SlotNoNo
2G BandsGSM 850/900/1800MHzGSM 850, 900, 1800, 1900 MHz
3G BandsUMTS(WCDMA) bands 1/4/5/8WCDMA Band 1, 2, 4, 5, 8
LTE Bands*LTE (B1/B3/B4/B5/B8/B28/B34/B38/B39/B40/B41)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 Stereo Stereo
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes Yes
Speaker Test
Max Volume
OnePlus Ace 2
n/a
Samsung Galaxy S21
87 dB

Other

Class Flagship Flagship
Announced February, 2023 yr January, 2021 yr
Release Date February, 2023 yr February, 2021 yr
Launch Price ($) 390 800
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes 100 W n/a
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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