Home Phone comparison Samsung Galaxy A51 5G and OnePlus Ace 6 - Which is better?

Samsung Galaxy A51 5G vs OnePlus Ace 6

45 out 100
Samsung Galaxy A51 5G
VS
89 out 100
OnePlus Ace 6
Samsung Galaxy A51 5G
OnePlus Ace 6

Compared 2 smartphones : Samsung Galaxy A51 5G Manufactured in June, 2020, with display 6.5 with chipsetSamsung Exynos 980, vs OnePlus Ace 6, Manufactured in October, 2025 with chipsetQualcomm Snapdragon 8 Elite. 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 Samsung Galaxy A51 5G
  • Lighter design: 187g vs 213g
  • Supports Dolby Atmos
Reasons to choose OnePlus Ace 6
  • Larger display: 6.83in
  • Higher pixel density: 450ppi
  • Higher refresh rate: 165Hz
  • Higher battery capacity: 7800mAh vs 4500mAh
  • Newer Bluetooth version: 5.4 vs 5
  • Infrared port

Versions

Available versions and configurations
Memory Options - 6/128 GB
- 8/128 GB		 - 12/256 GB
- 12/512 GB
- 16/256 GB
- 16/512 GB
- 16/1024 GB

Review

Key Specs Samsung Galaxy A51 5G and OnePlus Ace 6
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.
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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:
Samsung Galaxy A51 5G
vs
OnePlus Ace 6

Display

Display quality comparison
Type Super AMOLED AMOLED
Size 6.5 in 6.83 in
Resolution 1080x2400 pixels 1272x2800 pixels
Aspect ratio 20:9 19.5:9
Pixel density 405 ppi 450 ppi
Refresh rate 60 Hz 165 Hz
Adaptive refresh rate No Yes (1-120 Hz)
Max brightness 400 nits 800 nits
HDR support No Yes, Dolby Vision
Touch Sampling Rate n/a 300 Hz
Screen-to-body ratio 87.3 % 91 %
Features Always-On Display - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Samsung Galaxy A51 5G
639 nits
OnePlus Ace 6
n/a

Design & Build

Design and ergonomics comparison
Height 158.9 mm (6.26 in) 163.4 mm (6.43 in)
Width 73.6 mm (2.9 in) 77 mm (3.03 in)
Thickness 8.7 mm (0.34 in) 8.3 mm (0.33 in)
Weight 187 g (6.6 oz) 213 g (7.51 oz)
Water resistance No IP69
Cooling system n/a Vapor chamber
Back panel Plastic Glass
Frame Metal Metal
Colors - White
- Black
- Pink		 - White
- Black
- Silver
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Samsung Galaxy A51 5G
87.3 %
OnePlus Ace 6
91 %

Performance

Testing Samsung Galaxy A51 5G and OnePlus Ace 6 In benchmarks
Processor
Chipset Samsung Exynos 980 Qualcomm Snapdragon 8 Elite
Max Frequency 2200 MHz 4320 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6/1.8 (Cortex-A55)
- 2/2.2 (Cortex-A77)		 - 6/3.53 (Oryon (Phoenix M))
- 2/4.32 (Oryon (Phoenix L))
Process Samsung TSMC
Transistor Size 8 nm 3 nm
Neural Processor Yes Hexagon
Graphics Mali-G76 MP5 Adreno 830
GPU Cores 180 1536
GPU Frequency 700 MHz 1100 MHz
FLOPS 262.1 GFLOPS 3379.2 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy A51 5G
863
OnePlus Ace 6
3160
Geekbench 6 (Multi-Core)
Samsung Galaxy A51 5G
2112
OnePlus Ace 6
9736
Geekbench 6 (Single-Core)8633160
Geekbench 6 (Multi-Core)21129736
Sources: Geekbench v6 [OnePlus Ace 6]
AnTuTu 10
AnTuTu 10
Samsung Galaxy A51 5G
406776
OnePlus Ace 6
3114604
CPU130998856857
GPU850941148661
Memory86339455327
UX104345653759
NanoReview Score4067763114604

Memory

RAM
RAM Size 6 GB 12 GB
Memory Type LPDDR4X LPDDR5X
Memory Frequency 1866 MHz 5300 MHz
Channels 2 4
Storage
Storage Capacity128 GB256 GB
Storage TypeUFS 2.0UFS 4.1
Memory CardMicroSDNo

Software

OS Android 10 (Upgradeable to Android 13) Android 16
OS Size 22.7 GB n/a
UI Skin One UI 5.0 ColorOS 16

Battery

Volume 4500 mAh 7800 mAh
Max Charging Power 15 W 120 W
Battery Type Li-Po Silicon Carbon (Si/C)
Removable No No
Wireless Charging No No
Reverse Charging No Yes
Fast Charging Yes (40% in 40 min) Yes (58% in 20 min)
Full Charge Time 2:05 h 0:44 h
Battery Life Test
Battery Life
Samsung Galaxy A51 5G
18:19
OnePlus Ace 6
n/a
Web Browsing07:25 hn/a
Video Playback12:09 hn/a
Games05:11 hn/a
Standby Mode81 hn/a

Main camera

Matrix 48 MP 50 MP
Photo resolution 8000x6000 pixels 8192x6144 pixels
Zoom Digital Digital
Flash LED Dual LED
Stabilization Digital Optical
8K Recording No No
4K Recording Yes (Up to 30 fps) Yes (Up to 120 fps)
1080p Recording Yes (Up to 120 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (720p) 240 fps (1080p)
Wide-angle lens 123 ° 112 °
Lenses count Standard: 48 MP
Ultra-wide: 12 MP
Macro: 5 MP
Depth: 5 MP		 Standard: 50 MP
Ultra-wide: 8 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix48 MP50 MP
Aperturef/2.0f/1.8
Focal length26 mm24 mm
SensorSamsung S5KGM2Sony LYTIA-T808
Sensor size1/21/1.43
Pixel size0.8 μm1.12 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalOptical
Ultra-wide lens
Matrix12 MP8 MP
Aperturef/2.2f/2.2
Focal length13 mm16 mm
Sensorn/aOmnivision OV08D10
Sensor sizen/a1/4.0
Pixel size1.12 μm1.12 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Samsung Galaxy A51 5G
90
OnePlus Ace 6
n/a
Video quality
Samsung Galaxy A51 5G
86
OnePlus Ace 6
n/a
Overall camera score
Samsung Galaxy A51 5G
87
OnePlus Ace 6
n/a
Sources: DxOMark [Samsung Galaxy A51 5G]

Front camera

Matrix 32 MP 16 MP
Photo resolution 6560x4928 pixels 4608x3456 pixels
Aperture f/2.2 f/2.4
Focal length 26 mm 23 mm
Sensor Samsung S5KGD1 Sony IMX480
Sensor size 1/2.8 1/3.09
Pixel size 0.8 μm 1 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 2160p (4K) at 30 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No
Selfie camera DxOMark results
Photo quality
Samsung Galaxy A51 5G
100
OnePlus Ace 6
n/a
Video quality
Samsung Galaxy A51 5G
119
OnePlus Ace 6
n/a

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be)
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 5.4
Bluetooth features PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP LE
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort n/a No
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Yes Yes
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
2G BandsGSM 850 / 900 / 1800 / 2100 / 2600n/a
3G BandsUMTS 850 / 900 / 1900 / 2100n/a
LTE Bands*LTE (B850/B900/B1800/B2100/B2600)
LTE category12n/a
5G SupportYesYes

Sound

Speakers Mono n/a
3.5 mm Jack Yes No
FM Radio Yes No
Dolby Atmos Yes No

Other

Class Mid-range Flagship
Announced April, 2020 yr October, 2025 yr
Release Date June, 2020 yr October, 2025 yr
Launch Price ($) 499 n/a
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider OnePlus Ace 6 the clear winner in this comparison.

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