Xiaomi Mi 9T Pro vs Samsung Galaxy A51

Here we compared two smartphones: the 6.39-inch Xiaomi Mi 9T Pro (with Qualcomm Snapdragon 855) that was released on May 28, 2019, against the Samsung Galaxy A51, which is powered by Exynos 9 Octa 9611 and came out 7 months after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Xiaomi Mi 9T Pro
  • 2.3x better performance in AnTuTu Benchmark (498K versus 213K)
  • The rear camera has a 2x optical zoom
  • Shows 20% longer battery life (103 vs 86 hours)
  • Faster storage type - UFS 2.1 versus UFS 2.0
  • More energy-efficient CPU – Snapdragon 855
  • 83% faster in single-core GeekBench 5 test: 640 and 350 points
Reasons to consider the Samsung Galaxy A51
  • Expandable storage via MicroSD card up to 512GB
  • Supports Dolby Atmos sound technology
  • Weighs 19 grams less
  • The phone is 7-months newer
  • The front-facing camera can record video at 4K

Review

Display
Screen quality, color accuracy, brightness
Performance
CPU/GPU performance in apps and games
Battery
Battery life, charging type and speed
Camera
Photo and video recording quality
Connectivity
Networks, ports, data transmission
NanoReview score
Final comparison evaluation

Value for money

You can enter your local price of these phones (in USD or any other currency) and click on the "Calculate" button to see which one has a better value for money.
Price

Tests and specifications

Comparison table of technical specifications and tests
Phone:
vs

Display

Type AMOLED Super AMOLED
Size 6.39 inches 6.5 inches
Resolution 1080 x 2340 pixels 1080 x 2400 pixels
Aspect ratio 19.5:9 20:9
PPI 403 ppi 405 ppi
Refresh rate 60 Hz 60 Hz
HDR support Yes, HDR10 No
Screen protection Corning Gorilla Glass 5 Corning Gorilla Glass 3
Screen-to-body ratio 86.1% 87.4%
Display features - Always-On Display - Always-On Display
Display tests
RGB color space 142.2% 98.8%
PWM 223 Hz 242 Hz
Response time 6.5 ms 25 ms
Contrast ∞ Infinity ∞ Infinity
Max. Brightness
Mi 9T Pro +1%
643 nits
636 nits
Sources: NotebookCheck [1], [2]

Design and build

Height 156.7 mm (6.17 inches) 158.5 mm (6.24 inches)
Width 74.3 mm (2.93 inches) 73.6 mm (2.9 inches)
Thickness 8.8 mm (0.35 inches) 7.9 mm (0.31 inches)
Weight 191 gramm (6.74 oz) 172 gramm (6.07 oz)
Waterproof No No
Rear material Glass Plastic
Frame material Metal Plastic
Colors White, Black, Blue, Red White, Black
Fingerprint scanner Yes, in-display Yes, in-display
Screen-to-body ratio
86.1%
87.4%

Performance

Tests of Xiaomi Mi 9T Pro and Samsung Galaxy A51 in the benchmarks
SoC
Chipset Qualcomm Snapdragon 855 Samsung Exynos 9 Octa 9611
Max. clock 2840 MHz 2300 MHz
CPU cores 8 (1 + 3 + 4) 8 (4 + 4)
Architecture - 4 cores at 1.8 GHz: Cortex-A55 (Kryo 485 Silver)
- 3 cores at 2.42 GHz: Cortex-A76 (Kryo 485 Gold)
- 1 core at 2.84 GHz: Cortex-A76 (Kryo 485 Gold)
- 4 cores at 1.7 GHz: Cortex-A53
- 4 cores at 2.3 GHz: Cortex-A73
L3 cache 2 MB -
Lithography process 7 nanometers 10 nanometers
Graphics Adreno 640 Mali-G72 MP3
GPU clock 585 MHz 850 MHz
FLOPS ~899 GFLOPS ~259 GFLOPS
Memory
RAM size 6, 8 GB 4, 6 GB
Memory type LPDDR4X LPDDR4X
Memory clock 2133 MHz 1866 MHz
Channels 2 2
Storage
Storage size 128 GB 64, 128 GB
Storage type UFS 2.1 UFS 2.0
Memory card No MicroSD
Memory card max. size - Up to 512 GB

Benchmarks

Geekbench 5 (Single-Core)
Mi 9T Pro +83%
640
Geekbench 5 (Multi-Core)
Mi 9T Pro +102%
2595
1284
AnTuTu Benchmark 9
Mi 9T Pro +134%
498355
213093

Software

Operating system Android 9.0 (Can be upgraded to Android 11) Android 10 (Can be upgraded to Android 11)
ROM MIUI 12.5 One UI 3.0
OS size 19 GB 23 GB

Battery

Specifications
Capacity 4000 mAh 4000 mAh
Charge power 27 W 15 W
Battery type Li-Po Li-Po
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes, Quick Charge 4+ (40% in 20 min) Yes (40% in 35 min)
Full charging time 1:11 hr 1:50 hr

Battery life tests

Web browsing (Wi-Fi)
Mi 9T Pro +1%
13:33 hr
13:21 hr
Watching videos (Player)
Mi 9T Pro +43%
20:33 hr
14:22 hr
Talk (3G)
Mi 9T Pro +54%
33:23 hr
21:51 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 48 megapixels 48 megapixels
Image resolution 8000 x 6000 8000 x 6000
Zoom Optical, 2x Digital
Flash Dual LED LED
Stabilization Digital Digital
8K video recording No No
4K video recording Up to 60FPS Up to 30FPS
1080p video recording Up to 240FPS Up to 30FPS
Slow motion 960 FPS (720p) 960 FPS (720p)
Angle of widest lens 124° 120°
Lenses 3 (48 MP + 8 MP + 13 MP) 4 (48 MP + 12 MP + 5 MP + 5 MP)
Wide (main) lens - 48 MP
- Aperture: f/1.8
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2", Sony IMX586 (Exmor-RS CMOS)
- Phase autofocus
- 48 MP
- Aperture: f/2.0
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2", Samsung S5KGM2 (ISOCELL CMOS)
- Phase autofocus
Telephoto lens - 8 MP
- Aperture: f/2.4
- Focal length: 53 mm
- Pixel size: 1.12 micron
- Sensor: 1/4", Omnivision OV8856
- Phase autofocus
-
Ultra-wide lens - 13 MP
- Aperture: f/2.4
- Focal length: 12 mm
- Pixel size: 1.12 micron
- Sensor: 1/3.1", Samsung S5K3L6 (ISOCELL CMOS)
- 12 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
Macro lens - - 5 MP
- Aperture: f/2.4
- Focal length: 40 mm
- Pixel size: 1.12 micron
Depth lens - - 5 MP
- Aperture: f/2.2
- Pixel size: 1.12 micron
- Sensor: 1/5.0" (CMOS)
Camera features - Bokeh mode
- Pro mode
- RAW support
- Bokeh mode
- Pro mode
Samples Photo samples of Xiaomi Mi 9T Pro from DxOMark -
Selfie camera
Megapixels 20 megapixels 32 megapixels
Image resolution 5184 x 3880 6560 x 4928
Aperture f/2.2 f/2.2
Focal length 18 mm 26 mm
Pixel size 0.8 microns 0.8 microns
Sensor type CMOS ISOCELL CMOS
Sensor size 1/3.4" 1/2.8"
Video resolution 1080p (Full HD) at 30 FPS 2160p (4K) at 30 FPS

DxOMark camera tests

Photo quality
Video quality
Generic camera score

Connectivity

Wi-Fi standard Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 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 LE, A2DP 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
- USB-Host mode
- OTG
- Charging
- USB-Storage mode
- OTG
GPS GPS, GLONASS, Beidou, Galileo GPS, GLONASS, Beidou, Galileo
NFC* Yes Yes
Infrared port No No
Network
Number of SIM* 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* No No
Hybrid slot No No
LTE Cat* 20 12
5G support No No

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio Yes Yes
Dolby Atmos No Yes
Speakers test
Max. loudness
Mi 9T Pro +8%
87.9 dB
81.7 dB

Other

Category Flagship Mid-range
Announced May 2019 December 2019
Release date June 2019 December 2019
SAR (head) 1.3 W/kg 0.596 W/kg
SAR (body) 1.51 W/kg 1.45 W/kg
Sensors - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

After analyzing all the data, we think that the Xiaomi Mi 9T Pro is definitely a better buy.

Cast your vote

So, which phone would you choose?
46 (82.1%)
10 (17.9%)
Total votes: 56

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