Home Phone comparison Samsung Galaxy A51 5G and Xiaomi Redmi Note 8 - Which is better?

Samsung Galaxy A51 5G vs Xiaomi Redmi Note 8

45 out 100
Samsung Galaxy A51 5G
VS
42 out 100
Xiaomi Redmi Note 8
Samsung Galaxy A51 5G
Xiaomi Redmi Note 8

Compared 2 smartphones : Samsung Galaxy A51 5G Manufactured in June, 2020, with display 6.5 with chipsetSamsung Exynos 980, vs Xiaomi Redmi Note 8, Manufactured in September, 2019 with chipsetQualcomm Snapdragon 665. 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
  • Larger display: 6.5in
  • Lighter design: 187g vs 190g
  • Higher battery capacity: 4500mAh vs 4000mAh
  • Supports Dolby Atmos
Reasons to choose Xiaomi Redmi Note 8
  • Higher pixel density: 409ppi
  • Infrared port

Versions

Available versions and configurations
Memory Options - 6/128 GB
- 8/128 GB		 - 3/32 GB
- 4/64 GB
- 4/128 GB
- 6/64 GB
- 6/128 GB

Review

Key Specs Samsung Galaxy A51 5G and Xiaomi Redmi Note 8
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
Smartphones:
Samsung Galaxy A51 5G
vs
Xiaomi Redmi Note 8

Display

Display quality comparison
Type Super AMOLED IPS LCD
Size 6.5 in 6.3 in
Resolution 1080x2400 pixels 1080x2340 pixels
Aspect ratio 20:9 19.5:9
Pixel density 405 ppi 409 ppi
Refresh rate 60 Hz 60 Hz
Adaptive refresh rate No No
Max brightness 400 nits 450 nits
HDR support No No
Screen-to-body ratio 87.3 % 81.8 %
Features Always-On Display n/a
Display test
Peak brightness (auto)
Samsung Galaxy A51 5G
639 nits
Xiaomi Redmi Note 8
629 nits

Design & Build

Design and ergonomics comparison
Height 158.9 mm (6.26 in) 158.3 mm (6.23 in)
Width 73.6 mm (2.9 in) 75.3 mm (2.96 in)
Thickness 8.7 mm (0.34 in) 8.4 mm (0.33 in)
Weight 187 g (6.6 oz) 190 g (6.7 oz)
Water resistance No No
Back panel Plastic Glass
Frame Metal Plastic
Colors - White
- Black
- Pink		 - White
- Black
- Blue
Fingerprint sensor Yes In-Display Yes rear
Screen-to-body ratio
Samsung Galaxy A51 5G
87.3 %
Xiaomi Redmi Note 8
81.8 %

Performance

Testing Samsung Galaxy A51 5G and Xiaomi Redmi Note 8 In benchmarks
Processor
Chipset Samsung Exynos 980 Qualcomm Snapdragon 665
Max Frequency 2200 MHz 2000 MHz
CPU Cores 8 (2 + 6) 8 (4 + 4)
Architecture - 6/1.8 (Cortex-A55)
- 2/2.2 (Cortex-A77)		 - 4/1.8 (Kryo 260 Silver (Cortex-A53))
- 4/2 (Kryo 260 Gold (Cortex-A73))
Process Samsung Samsung
Transistor Size 8 nm 11 nm
Neural Processor Yes Hexagon 686
Graphics Mali-G76 MP5 Adreno 610
GPU Cores 180 128
GPU Frequency 700 MHz 950 MHz
FLOPS 262.1 GFLOPS 243.2 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy A51 5G
863
Xiaomi Redmi Note 8
508
Geekbench 6 (Multi-Core)
Samsung Galaxy A51 5G
2112
Xiaomi Redmi Note 8
1549
Geekbench 6 (Single-Core)863508
Geekbench 6 (Multi-Core)21121549
AnTuTu 10
AnTuTu 10
Samsung Galaxy A51 5G
406776
Xiaomi Redmi Note 8
234980
CPU13099881495
GPU8509434985
Memory8633951998
UX10434566502
NanoReview Score406776234980
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy A51 5G
n/a
Xiaomi Redmi Note 8
262
Stabilityn/a98 %
Graphics Testn/a1 fps
Graphics Scoren/a262
Sources: 3DMark [Xiaomi Redmi Note 8]
PCMark 3.0
PCMark 3.0
Samsung Galaxy A51 5G
n/a
Xiaomi Redmi Note 8
6415
Writing scoren/a6541
Web scoren/a5754
Video editingn/a4954
Data manipulationn/a5104
NanoReview Scoren/a6415

Memory

RAM
RAM Size 6 GB - 3 GB
- 4 GB
- 6 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage Capacity128 GB- 32 GB
- 64 GB
- 128 GB
Storage TypeUFS 2.0eMMC 5.1
Memory CardMicroSDMicroSD

Software

OS Android 10 (Upgradeable to Android 13) Android 9.0 (Upgradeable to Android 11)
OS Size 22.7 GB n/a
UI Skin One UI 5.0 MIUI 12.5 Enhanced

Battery

Volume 4500 mAh 4000 mAh
Max Charging Power 15 W 18 W
Battery Type Li-Po Li-Po
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging Yes (40% in 40 min) Yes Quick Charge 4.0 (50% in 35 min)
Full Charge Time 2:05 h 2:05 h
Battery Life Test
Battery Life
Samsung Galaxy A51 5G
18:19
Xiaomi Redmi Note 8
19:18
Web Browsing07:25 h07:46 h
Video Playback12:09 h12:22 h
Games05:11 h05:10 h
Standby Mode81 h88 h

Main camera

Matrix 48 MP 48 MP
Photo resolution 8000x6000 pixels 8000x6000 pixels
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
1080p Recording Yes (Up to 120 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (720p) 240 fps (720p)
Wide-angle lens 123 ° 118 °
Lenses count Standard: 48 MP
Ultra-wide: 12 MP
Macro: 5 MP
Depth: 5 MP		 Standard: 48 MP
Ultra-wide: 8 MP
Macro: 2 MP
Depth: 2 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
Main lens
Matrix48 MP48 MP
Aperturef/2.0f/1.8
Focal length26 mm26 mm
SensorSamsung S5KGM2Samsung S5KGM2
Sensor size1/21/2
Pixel size0.8 μm0.8 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital
Ultra-wide lens
Matrix12 MP8 MP
Aperturef/2.2f/2.2
Focal length13 mm13 mm
Sensorn/aOmnivision OV8856
Sensor sizen/a1/5
Pixel size1.12 μm1.12 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Samsung Galaxy A51 5G
90
Xiaomi Redmi Note 8
n/a
Video quality
Samsung Galaxy A51 5G
86
Xiaomi Redmi Note 8
n/a
Overall camera score
Samsung Galaxy A51 5G
87
Xiaomi Redmi Note 8
n/a
Sources: DxOMark [Samsung Galaxy A51 5G]

Front camera

Matrix 32 MP 13 MP
Photo resolution 6560x4928 pixels 4224x3136 pixels
Aperture f/2.2 f/2.0
Focal length 26 mm 2821 mm
Sensor Samsung S5KGD1 Omnivision OV13855
Sensor size 1/2.8 1/2.9
Pixel size 0.8 μm 1.12 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
Xiaomi Redmi Note 8
n/a
Video quality
Samsung Galaxy A51 5G
119
Xiaomi Redmi Note 8
n/a

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5
Bluetooth features PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP LE, HID, A2DP
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
NFC* Yes No
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 / 2600GSM 1800 / 1900 / 850 / 900 MHz
3G BandsUMTS 850 / 900 / 1900 / 2100UMTS 1900 / 2100 / 850 / 900 MHz
LTE Bands*LTE (B850/B900/B1800/B2100/B2600)LTE (B34)/B38)/B39)/B40)/B41)/B1900(/B2100(/B2300(/B2500(/B2600()
LTE category1212
5G SupportYesNo

Sound

Speakers Mono Mono
3.5 mm Jack Yes Yes
FM Radio Yes Yes
Dolby Atmos Yes No
Speaker Test
Max Volume
Samsung Galaxy A51 5G
n/a
Xiaomi Redmi Note 8
81.3 dB

Other

Class Mid-range Mid-range
Announced April, 2020 yr August, 2019 yr
Release Date June, 2020 yr September, 2019 yr
Launch Price ($) 499 190
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

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