Home Phone comparison Xiaomi Redmi 12 and Samsung Galaxy A51 - Which is better?

Xiaomi Redmi 12 vs Samsung Galaxy A51

47 out 100
Xiaomi Redmi 12
VS
41 out 100
Samsung Galaxy A51
Xiaomi Redmi 12
Samsung Galaxy A51

Compared 2 smartphones : Xiaomi Redmi 12 Manufactured in June, 2023, with display 6.79 with chipsetMediaTek Helio G88, vs Samsung Galaxy A51, Manufactured in December, 2019with chipsetSamsung Exynos 9 Octa 9611. 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 Xiaomi Redmi 12
  • Larger display: 6.79in
  • Higher refresh rate: 90Hz
  • Higher battery capacity: 5000mAh vs 4000mAh
  • Newer Bluetooth version: 5.3 vs 5
  • Infrared port
Reasons to choose Samsung Galaxy A51
  • Higher pixel density: 405ppi
  • Lighter design: 172g vs 198.5g
  • Supports Dolby Atmos

Versions

Available versions and configurations
Memory Options - 2/128 GB
- 4/128 GB
- 6/128 GB
- 8/128 GB
- 8/256 GB		 - 4/64 GB
- 4/128 GB
- 6/128 GB
- 8/128 GB
- 8/256 GB

Review

Key Specs Xiaomi Redmi 12 and Samsung Galaxy A51
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:
Xiaomi Redmi 12
vs
Samsung Galaxy A51

Display

Display quality comparison
Type IPS LCD Super AMOLED
Size 6.79 in 6.5 in
Resolution 1080x2460 pixels 1080x2400 pixels
Aspect ratio 19.5:9 20:9
Pixel density 396 ppi 405 ppi
Refresh rate 90 Hz 60 Hz
Adaptive refresh rate No No
Max brightness 550 nits 400 nits
HDR support No No
Screen-to-body ratio 88 % 87.5 %
Features n/a Always-On Display
Display test
Peak brightness (auto)
Xiaomi Redmi 12
539 nits
Samsung Galaxy A51
631 nits
sRGB gamut96.3 %98.8 %
PWM (Flicker)n/a242 Hz
Response time26 ms25 ms
Contrast898:1∞ Infinite
Sources: NotebookCheck [Xiaomi Redmi 12], [Samsung Galaxy A51]

Design & Build

Design and ergonomics comparison
Height 168.6 mm (6.64 in) 158.5 mm (6.24 in)
Width 76.28 mm (3 in) 73.6 mm (2.9 in)
Thickness 8.17 mm (0.32 in) 7.9 mm (0.31 in)
Weight 198.5 g (7 oz) 172 g (6.07 oz)
Water resistance IP53 No
Back panel Plastic Plastic
Frame Plastic Plastic
Colors - Black
- Silver
- Blue		 - White
- Black
Fingerprint sensor Yes In-Button Yes In-Display
Screen-to-body ratio
Xiaomi Redmi 12
88 %
Samsung Galaxy A51
87.5 %

Performance

Testing Xiaomi Redmi 12 and Samsung Galaxy A51 In benchmarks
Processor
Chipset MediaTek Helio G88 Samsung Exynos 9 Octa 9611
Max Frequency 2000 MHz 2300 MHz
CPU Cores 8 (2 + 6) 8 (4 + 4)
Architecture - 6/1.8 (Cortex-A55)
- 2/2 (Cortex-A75)		 - 4/1.7 (Cortex-A53)
- 4/2.3 (Cortex-A73)
Process TSMC Samsung
Transistor Size 12 nm 10 nm
Neural Processor MediaTek APU Yes
Graphics Mali-G52 MP2 Mali-G72 MP3
GPU Cores 48 54
GPU Frequency 1000 MHz 850 MHz
FLOPS 96 GFLOPS 113.8 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi Redmi 12
434
Samsung Galaxy A51
512
Geekbench 6 (Multi-Core)
Xiaomi Redmi 12
1223
Samsung Galaxy A51
1556
Geekbench 6 (Single-Core)434512
Geekbench 6 (Multi-Core)12231556
AnTuTu 10
AnTuTu 10
Xiaomi Redmi 12
266658
Samsung Galaxy A51
268760
CPU8450883857
GPU3952245166
Memory6968863828
UX7294075909
NanoReview Score266658268760
3DMark Wild Life
3DMark Wild Life
Xiaomi Redmi 12
743
Samsung Galaxy A51
812
Max Surface Temp.n/a42.2 °C
Stabilityn/a95 %
Graphics Testn/a4 fps
Graphics Scoren/a812
Sources: 3DMark [Xiaomi Redmi 12], [Samsung Galaxy A51]
PCMark 3.0
PCMark 3.0
Xiaomi Redmi 12
9150
Samsung Galaxy A51
n/a
Writing score8646n/a
Web score8615n/a
Video editing6849n/a
Data manipulation6391n/a
NanoReview Score9150n/a

Memory

RAM
RAM Size - 4 GB
- 8 GB		 - 4 GB
- 6 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 1800 MHz 1866 MHz
Channels 2 2
Storage
Storage Capacity- 128 GB
- 256 GB		- 64 GB
- 128 GB
Storage TypeeMMC 5.1UFS 2.0
Memory CardMicroSDMicroSD

Software

OS Android 13 (Upgradeable to Android 15) Android 10 (Upgradeable to Android 13)
OS Size 18 GB 23 GB
UI Skin HyperOS 2.0 One UI 5.1

Battery

Volume 5000 mAh 4000 mAh
Max Charging Power 18 W 15 W
Battery Type Li-Po Li-Po
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging Yes (29% in 30 min) Yes (40% in 35 min)
Full Charge Time 2:07 h 1:50 h
Battery Life Test
Battery Life
Xiaomi Redmi 12
22:09
Samsung Galaxy A51
17:53
Web Browsing07:58 h07:15 h
Video Playback12:45 h11:25 h
Games04:59 h04:49 h
Standby Mode118 h81 h

Main camera

Matrix 50 MP 48 MP
Photo resolution 8150x6150 pixels 8000x6000 pixels
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording No Yes (Up to 30 fps)
1080p Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
Slow Motion 120 fps (720p) 960 fps (720p)
Wide-angle lens 120 ° 120 °
Lenses count Standard: 50 MP
Ultra-wide: 8 MP
Depth: 2 MP		 Standard: 48 MP
Ultra-wide: 12 MP
Macro: 5 MP
Depth: 5 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
Main lens
Matrix50 MP48 MP
Aperturef/1.8f/2.0
Focal lengthn/a26 mm
SensorSamsung S5KJN1Sony IMX582
Sensor size1/2.761/2
Pixel size0.64 μm0.8 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital
Ultra-wide lens
Matrix8 MP12 MP
Aperturef/2.2f/2.2
Focal lengthn/a13 mm
SensorSony IMX355n/a
Sensor size1/2.8n/a
Pixel size1.14 μm1.12 μm
StabilizationDigitalDigital

Front camera

Matrix 8 MP 32 MP
Photo resolution 3264x2448 pixels 6560x4928 pixels
Aperture f/2.1 f/2.2
Focal length n/a 26 mm
Sensor n/a Samsung S5KGD1
Sensor size n/a 1/2.8
Pixel size n/a 0.8 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 2160p (4K) 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 5.3 5
Bluetooth features LE PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode		 - Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Varies by region Yes
Infrared Port Yes No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotYesNo
2G BandsGSM 2/3/5/8GSM 850 / 900 / 1800 / 2100 / 2600
3G BandsWCDMA 1/5/8UMTS 850 / 900 / 1900 / 2100
LTE Bands*LTE (B1/B3/B5/B7/B8/B20/B28/B38/B40/B41)LTE (B850/B900/B1800/B2100/B2600)
LTE category712
5G SupportNoNo

Sound

Speakers Mono Mono
3.5 mm Jack Yes Yes
FM Radio Yes Yes
Dolby Atmos No Yes
Speaker Test
Max Volume
Xiaomi Redmi 12
79.4 dB
Samsung Galaxy A51
81.7 dB

Other

Class Budget Mid-range
Announced June, 2023 yr December, 2019 yr
Release Date June, 2023 yr December, 2019 yr
Launch Price ($) 159 399
Sensors - Accelerometer
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included No n/a
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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