Samsung Galaxy A51 vs Xiaomi Mi 9T Pro

Compared 2 smartphones : Samsung Galaxy A51 Manufactured in December, 2019, with display 6.5 with chipsetSamsung Exynos 9 Octa 9611, vs Xiaomi Mi 9T Pro, Manufactured in June, 2019 with chipsetQualcomm Snapdragon 855. Below are specs, tests, pros and cons for each device

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy A51
  • Larger display: 6.5in
  • Higher pixel density: 405ppi
  • Lighter design: 172g vs 191g
  • Supports Dolby Atmos
Reasons to choose Xiaomi Mi 9T Pro

    Versions

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

    Review

    Key Specs Samsung Galaxy A51 and Xiaomi Mi 9T Pro
    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

    Display

    Display quality comparison
    Type Super AMOLED AMOLED
    Size 6.5 in 6.39 in
    Resolution 1080x2400 pixels 1080x2340 pixels
    Aspect ratio 20:9 19.5:9
    Pixel density 405 ppi 403 ppi
    Refresh rate 60 Hz 60 Hz
    Adaptive refresh rate No No
    Max brightness 400 nits 600 nits
    HDR support No Yes HDR10
    Screen-to-body ratio 87.5 % 86.1 %
    Features Always-On Display Always-On Display
    Display test
    Peak brightness (auto)
    Samsung Galaxy A51
    631 nits
    Xiaomi Mi 9T Pro
    642 nits
    sRGB gamut98.8 %142.2 %
    PWM (Flicker)242 Hz223 Hz
    Response time25 ms6.5 ms
    Contrast∞ Infinite∞ Infinite

    Design & Build

    Design and ergonomics comparison
    Height 158.5 mm (6.24 in) 156.7 mm (6.17 in)
    Width 73.6 mm (2.9 in) 74.3 mm (2.93 in)
    Thickness 7.9 mm (0.31 in) 8.8 mm (0.35 in)
    Weight 172 g (6.07 oz) 191 g (6.74 oz)
    Water resistance No No
    Back panel Plastic Glass
    Frame Plastic Metal
    Colors - White
    - Black
    - White
    - Black
    - Blue
    - Red
    Fingerprint sensor Yes In-Display Yes In-Display
    Screen-to-body ratio
    Samsung Galaxy A51
    87.5 %
    Xiaomi Mi 9T Pro
    86.1 %

    Performance

    Testing Samsung Galaxy A51 and Xiaomi Mi 9T Pro In benchmarks
    Processor
    Chipset Samsung Exynos 9 Octa 9611 Qualcomm Snapdragon 855
    Max Frequency 2300 MHz 2840 MHz
    CPU Cores 8 (4 + 4) 8 (1 + 3 + 4)
    Architecture - 4/1.7 (Cortex-A53)
    - 4/2.3 (Cortex-A73)
    - 4/1.8 (Cortex-A55 (Kryo 485 Silver))
    - 3/2.42 (Cortex-A76 (Kryo 485 Gold))
    - 1/2.84 (Cortex-A76 (Kryo 485 Gold))
    Process Samsung TSMC
    Transistor Size 10 nm 7 nm
    Neural Processor Yes Hexagon 690
    Graphics Mali-G72 MP3 Adreno 640
    GPU Cores 54 768
    GPU Frequency 850 MHz 585 MHz
    FLOPS 113.8 GFLOPS 898.5 GFLOPS
    GeekBench v6
    Geekbench 6 (Single-Core)
    Samsung Galaxy A51
    512
    Xiaomi Mi 9T Pro
    933
    Geekbench 6 (Multi-Core)
    Samsung Galaxy A51
    1556
    Xiaomi Mi 9T Pro
    2405
    Geekbench 6 (Single-Core)512933
    Geekbench 6 (Multi-Core)15562405
    AnTuTu 10
    AnTuTu 10
    Samsung Galaxy A51
    268760
    Xiaomi Mi 9T Pro
    621437
    CPU83857200133
    GPU45166193659
    Memory63828104050
    UX75909123595
    NanoReview Score268760621437
    3DMark Wild Life
    3DMark Wild Life
    Samsung Galaxy A51
    812
    Xiaomi Mi 9T Pro
    3022
    Max Surface Temp.42.2 °C44.1 °C
    Stability95 %88 %
    Graphics Test4 fps18 fps
    Graphics Score8123022
    PCMark 3.0
    PCMark 3.0
    Samsung Galaxy A51
    n/a
    Xiaomi Mi 9T Pro
    9555
    Writing scoren/a11471
    Web scoren/a7040
    Video editingn/a5961
    Data manipulationn/a8050
    NanoReview Scoren/a9555

    Memory

    RAM
    RAM Size - 4 GB
    - 6 GB
    - 6 GB
    - 8 GB
    Memory Type LPDDR4X LPDDR4X
    Memory Frequency 1866 MHz 2133 MHz
    Channels 2 2
    Storage
    Storage Capacity- 64 GB
    - 128 GB
    128 GB
    Storage TypeUFS 2.0UFS 2.1
    Memory CardMicroSDNo

    Software

    OS Android 10 (Upgradeable to Android 13) Android 9.0 (Upgradeable to Android 11)
    OS Size 23 GB 19 GB
    UI Skin One UI 5.1 MIUI 12.5

    Battery

    Volume 4000 mAh 4000 mAh
    Max Charging Power 15 W 27 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+ (40% in 20 min)
    Full Charge Time 1:50 h 1:11 h
    Battery Life Test
    Battery Life
    Samsung Galaxy A51
    17:53
    Xiaomi Mi 9T Pro
    21:14
    Web Browsing07:15 h07:54 h
    Video Playback11:25 h12:39 h
    Games04:49 h04:50 h
    Standby Mode81 h109 h

    Main camera

    Matrix 48 MP 48 MP
    Photo resolution 8000x6000 pixels 8000x6000 pixels
    Zoom Digital Optical, 2x
    Flash LED Dual LED
    Stabilization Digital Digital
    8K Recording No No
    4K Recording Yes (Up to 30 fps) Yes (Up to 60 fps)
    1080p Recording Yes (Up to 30 fps) Yes (Up to 60 fps)
    Slow Motion 960 fps (720p) 960 fps (1080p)
    Wide-angle lens 120 ° 124 °
    Lenses count Standard: 48 MP
    Ultra-wide: 12 MP
    Macro: 5 MP
    Depth: 5 MP
    Standard: 48 MP
    Telephoto: 8 MP
    Ultra-wide: 13 MP
    Features - Bokeh effect
    - Pro mode
    - Bokeh effect
    - Pro mode
    - RAW support
    Main lens
    Matrix48 MP48 MP
    Aperturef/2.0f/1.8
    Focal length26 mm26 mm
    SensorSony IMX582Sony IMX586
    Sensor size1/21/2
    Pixel size0.8 μm0.8 μm
    AutofocusPhase autofocusPhase autofocus
    StabilizationDigitalDigital
    Telephoto
    Matrixn/a8 MP
    Aperturen/af/2.4
    Focal lengthn/a53 mm
    Sensorn/aOmnivision OV8856
    Sensor sizen/a1/4
    Pixel sizen/a1.12 μm
    Stabilizationn/aDigital
    Ultra-wide lens
    Matrix12 MP13 MP
    Aperturef/2.2f/2.4
    Focal length13 mm12 mm
    Sensorn/aSamsung S5K3L6
    Sensor sizen/a1/3.1
    Pixel size1.12 μm1.12 μm
    StabilizationDigitalDigital
    Main camera DxOMark results
    Photo quality
    Samsung Galaxy A51
    n/a
    Xiaomi Mi 9T Pro
    108
    Video quality
    Samsung Galaxy A51
    n/a
    Xiaomi Mi 9T Pro
    89
    Overall camera score
    Samsung Galaxy A51
    n/a
    Xiaomi Mi 9T Pro
    102

    Front camera

    Matrix 32 MP 20 MP
    Photo resolution 6560x4928 pixels 5184x3880 pixels
    Aperture f/2.2 f/2.2
    Focal length 26 mm 18 mm
    Sensor Samsung S5KGD1 Samsung S5K3T2
    Sensor size 1/2.8 1/3.4
    Pixel size 0.8 μm 0.8 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

    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
    - USB-Host mode
    - OTG
    GPS - GPS
    - GLONASS
    - Beidou
    - Galileo
    - GPS
    - GLONASS
    - Beidou
    - Galileo
    NFC* Yes Yes
    Infrared Port No No
    Connectivity
    SIM Count*22
    SIM TypeNanoNano
    SIM ModeDual SIM StandbyDual SIM Standby
    eSIM Support *NoNo
    Hybrid SlotNoNo
    2G BandsGSM 850 / 900 / 1800 / 2100 / 2600GSM 850, GSM 900, GSM 1800, GSM 1900
    3G BandsUMTS 850 / 900 / 1900 / 2100HSDPA 850, HSDPA 900, HSDPA 1900, HSDPA 2100
    LTE Bands*LTE (B850/B900/B1800/B2100/B2600)LTE (B800/B850/B900/B1800/B2100/B2300/B2500/B2600)
    LTE category1220
    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 A51
    81.7 dB
    Xiaomi Mi 9T Pro
    87.9 dB

    Other

    Class Mid-range Flagship
    Announced December, 2019 yr May, 2019 yr
    Release Date December, 2019 yr June, 2019 yr
    Launch Price ($) 399 450
    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

    After analyzing the data, we consider Xiaomi Mi 9T Pro the clear winner in this comparison.

    Survey

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