Home Phone comparison Samsung Galaxy A51 and Xiaomi Redmi Note 7 - Which is better?

Samsung Galaxy A51 vs Xiaomi Redmi Note 7

41 out 100
Samsung Galaxy A51
VS
40 out 100
Xiaomi Redmi Note 7
Samsung Galaxy A51
Xiaomi Redmi Note 7

Compared 2 smartphones : Samsung Galaxy A51 Manufactured in December, 2019, with display 6.5 with chipsetSamsung Exynos 9 Octa 9611, vs Xiaomi Redmi Note 7, Manufactured in January, 2019 with chipsetQualcomm Snapdragon 660. 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
  • Larger display: 6.5in
  • Lighter design: 172g vs 186g
  • Supports Dolby Atmos
Reasons to choose Xiaomi Redmi Note 7
  • Higher pixel density: 409ppi
  • Infrared port

Versions

Available versions and configurations
Memory Options - 4/64 GB
- 4/128 GB
- 6/128 GB
- 8/128 GB
- 8/256 GB		 - 3/32 GB
- 4/64 GB
- 4/128 GB
- 6/64 GB

Review

Key Specs Samsung Galaxy A51 and Xiaomi Redmi Note 7
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
vs
Xiaomi Redmi Note 7

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 550 nits
HDR support No No
Screen-to-body ratio 87.5 % 81.4 %
Features Always-On Display n/a
Display test
Peak brightness (auto)
Samsung Galaxy A51
631 nits
Xiaomi Redmi Note 7
535 nits
sRGB gamut98.8 %99.3 %
PWM (Flicker)242 Hz2336 Hz
Response time25 ms43.2 ms
Contrast∞ Infinite1639:1
Sources: NotebookCheck [Samsung Galaxy A51], [Xiaomi Redmi Note 7]

Design & Build

Design and ergonomics comparison
Height 158.5 mm (6.24 in) 159.2 mm (6.27 in)
Width 73.6 mm (2.9 in) 75.2 mm (2.96 in)
Thickness 7.9 mm (0.31 in) 8.1 mm (0.32 in)
Weight 172 g (6.07 oz) 186 g (6.56 oz)
Water resistance No No
Back panel Plastic Glass
Frame Plastic Plastic
Colors - White
- Black		 - Black
- Blue
Fingerprint sensor Yes In-Display Yes rear
Screen-to-body ratio
Samsung Galaxy A51
87.5 %
Xiaomi Redmi Note 7
81.4 %

Performance

Testing Samsung Galaxy A51 and Xiaomi Redmi Note 7 In benchmarks
Processor
Chipset Samsung Exynos 9 Octa 9611 Qualcomm Snapdragon 660
Max Frequency 2300 MHz 2200 MHz
CPU Cores 8 (4 + 4) 8 (4 + 4)
Architecture - 4/1.7 (Cortex-A53)
- 4/2.3 (Cortex-A73)		 - 4/1.84 (Kryo 260 Silver (Cortex-A53))
- 4/2.2 (Kryo 260 Gold (Cortex-A73))
Process Samsung Samsung
Transistor Size 10 nm 14 nm
Neural Processor Yes Hexagon 680
Graphics Mali-G72 MP3 Adreno 512
GPU Cores 54 128
GPU Frequency 850 MHz 850 MHz
FLOPS 113.8 GFLOPS 217.6 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy A51
512
Xiaomi Redmi Note 7
518
Geekbench 6 (Multi-Core)
Samsung Galaxy A51
1556
Xiaomi Redmi Note 7
1562
Geekbench 6 (Single-Core)512518
Geekbench 6 (Multi-Core)15561562
AnTuTu 10
AnTuTu 10
Samsung Galaxy A51
268760
Xiaomi Redmi Note 7
251675
CPU8385790916
GPU4516638054
Memory6382855264
UX7590967441
NanoReview Score268760251675
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy A51
812
Xiaomi Redmi Note 7
373
Max Surface Temp.42.2 °C37.6 °C
Stability95 %96 %
Graphics Test4 fps2 fps
Graphics Score812373
Sources: 3DMark [Samsung Galaxy A51], [Xiaomi Redmi Note 7]
PCMark 3.0
PCMark 3.0
Samsung Galaxy A51
n/a
Xiaomi Redmi Note 7
6255
Writing scoren/a6439
Web scoren/a5258
Video editingn/a5275
Data manipulationn/a5354
NanoReview Scoren/a6255

Memory

RAM
RAM Size - 4 GB
- 6 GB		 - 3 GB
- 4 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage Capacity- 64 GB
- 128 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 (Upgradeable to Android 10)
OS Size 23 GB 13 GB
UI Skin One UI 5.1 MIUI 12.5

Battery

Volume 4000 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 35 min) Yes Quick Charge 4 (60% in 50 min)
Full Charge Time 1:50 h 1:50 h
Battery Life Test
Battery Life
Samsung Galaxy A51
17:53
Xiaomi Redmi Note 7
20:52
Web Browsing07:15 h07:45 h
Video Playback11:25 h11:59 h
Games04:49 h04:43 h
Standby Mode81 h110 h

Main camera

Matrix 48 MP 48 MP
Photo resolution 8000x6000 pixels 8000x6000 pixels
Zoom Digital Digital
Flash LED Dual LED
Stabilization Digital Digital
8K Recording No No
4K Recording Yes (Up to 30 fps) No
1080p Recording Yes (Up to 30 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (720p) 120 fps (1080p)
Wide-angle lens 120 ° n/a
Lenses count Standard: 48 MP
Ultra-wide: 12 MP
Macro: 5 MP
Depth: 5 MP		 Standard: 48 MP
Depth: 5 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix48 MP48 MP
Aperturef/2.0f/1.8
Focal length26 mmn/a
SensorSony IMX582Samsung S5KGM1
Sensor size1/21/2
Pixel size0.8 μm0.8 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital
Ultra-wide lens
Matrix12 MPn/a
Aperturef/2.2n/a
Focal length13 mmn/a
Pixel size1.12 μmn/a
StabilizationDigitaln/a

Front camera

Matrix 32 MP 13 MP
Photo resolution 6560x4928 pixels 4160x3120 pixels
Aperture f/2.2 f/2.2
Focal length 26 mm n/a
Sensor Samsung S5KGD1 Omnivision OV13855
Sensor size 1/2.8 1/3.1
Pixel size 0.8 μm 1.12 μm
Autofocus No No
Stabilization Digital No
Video resolution 2160p (4K) at 30 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

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, 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
- Galileo
NFC* Yes No
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoYes
2G BandsGSM 850 / 900 / 1800 / 2100 / 2600GSM 850, GSM 900, GSM 1800, GSM 1900
3G BandsUMTS 850 / 900 / 1900 / 2100HSDPA 900, HSDPA 2100
LTE Bands*LTE (B850/B900/B1800/B2100/B2600)LTE (B850/B1800/B2100/B2300/B2500)
LTE category1213
5G SupportNon/a

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
81.7 dB
Xiaomi Redmi Note 7
87.6 dB

Other

Class Mid-range Mid-range
Announced December, 2019 yr January, 2019 yr
Release Date December, 2019 yr January, 2019 yr
Launch Price ($) 399 190
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

No clear favorite identified yet; updates may follow as new data arrives.

Survey

Which smartphone would you pick?
0 (0%)
0 (0%)
Total Votes: 0

User comments

Share your opinion or ask questions below