Home Phone comparison Samsung Galaxy A31 and Xiaomi Redmi 7A - Which is better?

Samsung Galaxy A31 vs Xiaomi Redmi 7A

43 out 100
Samsung Galaxy A31
VS
31 out 100
Xiaomi Redmi 7A
Samsung Galaxy A31
Xiaomi Redmi 7A

Compared 2 smartphones : Samsung Galaxy A31 Manufactured in April, 2020, with display 6.4 with chipsetMediatek Helio P65, vs Xiaomi Redmi 7A, Manufactured in June, 2019 with chipsetQualcomm Snapdragon 439. 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 A31
  • Larger display: 6.4in
  • Higher pixel density: 411ppi
  • Higher battery capacity: 5000mAh vs 4000mAh
  • Newer Bluetooth version: 5 vs 4.2
  • Supports Dolby Atmos
  • Fingerprint scanner
Reasons to choose Xiaomi Redmi 7A
  • Lighter design: 165g vs 185g

Versions

Available versions and configurations
Memory Options - 4/64 GB
- 4/128 GB
- 6/128 GB
- 8/128 GB		 - 2/16 GB
- 2/32 GB
- 3/32 GB

Review

Key Specs Samsung Galaxy A31 and Xiaomi Redmi 7A
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 A31
vs
Xiaomi Redmi 7A

Display

Display quality comparison
Type Super AMOLED IPS LCD
Size 6.4 in 5.45 in
Resolution 1080x2400 pixels 720x1440 pixels
Aspect ratio 20:9 18:9
Pixel density 411 ppi 295 ppi
Refresh rate 60 Hz 60 Hz
Adaptive refresh rate No No
Max brightness 600 nits 530 nits
HDR support No No
Screen-to-body ratio 84.9 % 74.4 %
Features Always-On Display n/a
Display test
Peak brightness (auto)
Samsung Galaxy A31
629 nits
Xiaomi Redmi 7A
506 nits
sRGB gamut96.8 %94.2 %
PWM (Flicker)238 Hz384 Hz
Response time8 ms27 ms
Contrast∞ Infinite888:1
Sources: NotebookCheck [Samsung Galaxy A31], [Xiaomi Redmi 7A]

Design & Build

Design and ergonomics comparison
Height 159.3 mm (6.27 in) 146.3 mm (5.76 in)
Width 73.1 mm (2.88 in) 70.4 mm (2.77 in)
Thickness 8.6 mm (0.34 in) 9.5 mm (0.37 in)
Weight 185 g (6.53 oz) 165 g (5.82 oz)
Water resistance No IPX4
Back panel Plastic Plastic
Frame Plastic Plastic
Colors - White
- Black
- Blue
- Red		 - Black
- Blue
- Red
Fingerprint sensor Yes In-Display No
Screen-to-body ratio
Samsung Galaxy A31
84.9 %
Xiaomi Redmi 7A
74.4 %

Performance

Testing Samsung Galaxy A31 and Xiaomi Redmi 7A In benchmarks
Processor
Chipset Mediatek Helio P65 Qualcomm Snapdragon 439
Max Frequency 2000 MHz 2000 MHz
CPU Cores 8 (2 + 6) 8 (4 + 4)
Architecture - 6/1.7 (Cortex-A55)
- 2/2 (Cortex-A75)		 - 4/1.45 (Cortex-A53)
- 4/2 (Cortex-A53)
Process TSMC Samsung
Transistor Size 12 nm 12 nm
Neural Processor Yes Hexagon 536
Graphics Mali-G52 MP2 Adreno 505
GPU Cores 48 48
GPU Frequency 820 MHz 450 MHz
FLOPS 78.7 GFLOPS 43.2 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy A31
509
Xiaomi Redmi 7A
477
Geekbench 6 (Multi-Core)
Samsung Galaxy A31
1553
Xiaomi Redmi 7A
1521
Geekbench 6 (Single-Core)509477
Geekbench 6 (Multi-Core)15531521
AnTuTu 10
AnTuTu 10
Samsung Galaxy A31
197929
Xiaomi Redmi 7A
118018
CPU7432737665
GPU2421814471
Memory4549126778
UX5389339104
NanoReview Score197929118018
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy A31
572
Xiaomi Redmi 7A
n/a
Max Surface Temp.45.2 °Cn/a
Stability97 %n/a
Graphics Test3 fpsn/a
Graphics Score572n/a
Sources: 3DMark [Samsung Galaxy A31]
PCMark 3.0
PCMark 3.0
Samsung Galaxy A31
5615
Xiaomi Redmi 7A
n/a
Writing score5825n/a
Web score4447n/a
Video editing4920n/a
Data manipulation4420n/a
NanoReview Score5615n/a

Memory

RAM
RAM Size 4 GB 2 GB
Memory Type LPDDR4X LPDDR3
Memory Frequency 1866 MHz 933 MHz
Channels 2 1
Storage
Storage Capacity- 64 GB
- 128 GB		- 16 GB
- 32 GB
Storage TypeeMMC 5.1eMMC 5.1
Memory CardMicroSDMicroSD

Software

OS Android 10 (Upgradeable to Android 12) Android 9.0 (Upgradeable to Android 10)
OS Size 27 GB 6.4 GB
UI Skin One UI 4.1 MIUI 12

Battery

Volume 5000 mAh 4000 mAh
Max Charging Power 15 W n/a
Battery Type Li-ion Li-Po
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging Yes Samsung Adaptive Fast Charge (50% in 60 min) No
Full Charge Time 2:25 h 2:35 h
Battery Life Test
Battery Life
Samsung Galaxy A31
25:27
Xiaomi Redmi 7A
17:13
Web Browsing10:26 h06:26 h
Video Playback14:36 h09:44 h
Games05:44 h04:10 h
Standby Mode126 h90 h

Main camera

Matrix 48 MP 12 MP
Photo resolution 8000x6000 pixels 4128x3096 pixels
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording No No
1080p Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
Slow Motion No No
Wide-angle lens 123 ° n/a
Lenses count Standard: 48 MP
Ultra-wide: 8 MP
Macro: 5 MP
Depth: 5 MP		 Standard: 12 MP
Features - Bokeh effect
- Pro mode
Main lens
Matrix48 MP12 MP
Aperturef/2.0f/2.2
Focal length26 mmn/a
SensorSamsung S5KGM2Sony IMX486
Sensor size1/2.01/2.9
Pixel size0.8 μm1.12 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital
Ultra-wide lens
Matrix8 MPn/a
Aperturef/2.2n/a
Focal length13 mmn/a
Sensor size1/4.0n/a
Pixel size1.12 μmn/a
StabilizationDigitaln/a

Front camera

Matrix 20 MP 5 MP
Photo resolution 5963x3354 pixels 2592x1944 pixels
Aperture f/2.2 f/2.2
Sensor CMOS GalaxyCore
Sensor size n/a 1/5
Pixel size n/a 1.12 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) 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 4 (802.11 a/b/g/n)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot		 - Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 4.2
Bluetooth features PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP LE, A2DP
USB type USB Type-C Micro USB
USB version 2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- USB-Host mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
NFC* Yes No
Infrared Port No No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
2G BandsGSM850, GSM900, DCS1800, PCS1900GSM 850, GSM 900, GSM 1800, GSM 1900
3G BandsB1 (2100), B2 (1900), B5(850), B8 (900)HSDPA 900, HSDPA 2100
LTE Bands*LTE (B1/B2/B3/B5/B7/B8/B20/B38/B40/B41)LTE (B800/B900/B1800/B1900/B2300/B2500/B2600)
LTE category124
5G SupportNoNo

Sound

Speakers Mono Mono
3.5 mm Jack Yes Yes
FM Radio Yes Yes
Dolby Atmos Yes No
Speaker Test
Max Volume
Samsung Galaxy A31
78.5 dB
Xiaomi Redmi 7A
82 dB

Other

Class Mid-range Budget
Announced March, 2020 yr May, 2019 yr
Release Date April, 2020 yr June, 2019 yr
Launch Price ($) 210 85
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Samsung Galaxy A31 the clear winner in this comparison.

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