Home Phone comparison Realme C51 and Tecno Spark Slim - Which is better?

Realme C51 vs Tecno Spark Slim

44 out 100
Realme C51
VS
62 out 100
Tecno Spark Slim
Realme C51
Tecno Spark Slim

Compared 2 smartphones : Realme C51 Manufactured in August, 2023, with display 6.74 with chipsetUnisoc Tiger T612, vs Tecno Spark Slim, Manufactured in October, 2025with chipsetMediaTek Helio G200. 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 Realme C51
    Reasons to choose Tecno Spark Slim
    • Larger display: 6.78in
    • Higher pixel density: 440ppi
    • Higher refresh rate: 144Hz
    • Lighter design: 156g vs 186g
    • Higher battery capacity: 5160mAh vs 5000mAh
    • Newer Bluetooth version: 5.4 vs 5
    • Supports Dolby Atmos
    • Infrared port

    Versions

    Available versions and configurations
    Memory Options - 3/64 GB
    - 4/64 GB
    - 4/128 GB
    - 6/256 GB    		 n/a

    Review

    Key Specs Realme C51 and Tecno Spark Slim
    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:
    Realme C51
    vs
    Tecno Spark Slim

    Display

    Display quality comparison
    Type IPS LCD AMOLED
    Size 6.74 in 6.78 in
    Resolution 720x1600 pixels 1224x2720 pixels
    Aspect ratio 20:9 20:9
    Pixel density 260 ppi 440 ppi
    Refresh rate 90 Hz 144 Hz
    Adaptive refresh rate No Yes
    Max brightness 560 nits 4500 nits
    HDR support No No
    Touch Sampling Rate 180 Hz n/a
    Screen-to-body ratio 85.6 % 89.1 %
    Features n/a - DCI-P3
    - DC dimming

    Design & Build

    Design and ergonomics comparison
    Height 167.2 mm (6.58 in) 164.2 mm (6.46 in)
    Width 76.7 mm (3.02 in) 75.9 mm (2.99 in)
    Thickness 7.99 mm (0.31 in) 5.93 mm (0.23 in)
    Weight 186 g (6.56 oz) 156 g (5.5 oz)
    Water resistance No IP64
    Back panel Plastic n/a
    Frame Plastic Plastic
    Colors - Black
    - Green    		 - White
    - Black
    Fingerprint sensor Yes In-Button Yes, In-Display
    Screen-to-body ratio
    Realme C51
    85.6 %
    Tecno Spark Slim
    89.1 %

    Performance

    Testing Realme C51 and Tecno Spark Slim In benchmarks
    Processor
    Chipset Unisoc Tiger T612 MediaTek Helio G200
    Max Frequency 1800 MHz 2200 MHz
    CPU Cores 8 (2 + 6) 8 (2 + 6)
    Architecture - 6/1.8 (Cortex-A55)
    - 2/1.8 (Cortex-A75)    		 - 6/2 (Cortex-A55)
    - 2/2.2 (Cortex-A76)
    Process TSMC TSMC
    Transistor Size 12 nm 6 nm
    Neural Processor n/a Yes
    Graphics Mali-G57 MP1 Mali-G57 MP2
    GPU Cores 32 64
    GPU Frequency 614 MHz 1100 MHz
    FLOPS 78.6 GFLOPS 140.8 GFLOPS
    GeekBench v6
    Geekbench 6 (Single-Core)
    Realme C51
    415
    Tecno Spark Slim
    718
    Geekbench 6 (Multi-Core)
    Realme C51
    1476
    Tecno Spark Slim
    1985
    Geekbench 6 (Single-Core)415718
    Geekbench 6 (Multi-Core)14761985
    Geekbench Compute (GPU)n/a1480
    Sources: Geekbench v6 [Realme C51], [Tecno Spark Slim]
    AnTuTu 10
    AnTuTu 10
    Realme C51
    244837
    Tecno Spark Slim
    591552
    CPU85532220476
    GPU2331048665
    Memory66023149900
    UX69972172511
    NanoReview Score244837591552

    Memory

    RAM
    RAM Size 4 GB 8 GB
    Memory Type LPDDR4X LPDDR4X
    Memory Frequency 1866 MHz 2133 MHz
    Channels 2 2
    Storage
    Storage Capacity- 64 GB
    - 128 GB    		256 GB
    Storage TypeeMMC 5.1UFS 2.2
    Memory CardMicroSDNo

    Software

    OS Android 13 Android 15
    UI Skin Realme UI T HIOS 15

    Battery

    Volume 5000 mAh 5160 mAh
    Max Charging Power 33 W 45 W
    Battery Type Li-Po Li-Po
    Removable No No
    Wireless Charging No No
    Reverse Charging No Yes
    Fast Charging Yes (50% in 28 min) Yes (52% in 30 min)
    Full Charge Time 1:12 h 0:57 h

    Main camera

    Matrix 50 MP 50 MP
    Photo resolution 8192x6144 pixels 8160x6144 pixels
    Zoom Digital Digital
    Flash LED Dual 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 30 fps (480p) n/a
    Lenses count Standard: 50 MP
    Depth: 0.08 MP    		 Standard: 50 MP
    Features - Bokeh effect
    - Pro mode    		 - Bokeh effect
    - Pro mode
    Main lens
    Matrix50 MP50 MP
    Aperturef/1.8n/a
    Focal length27 mmn/a
    SensorSamsung S5KJN1n/a
    Sensor size1/2.76n/a
    Pixel size0.64 μmn/a
    AutofocusPhase autofocusPhase autofocus
    StabilizationDigitalDigital

    Front camera

    Matrix 5 MP 13 MP
    Photo resolution 3264x2448 pixels n/a
    Aperture f/2.2 n/a
    Focal length 28 mm n/a
    Sensor Samsung S5K5E9 CMOS
    Sensor size 1/5 n/a
    Pixel size 1.12 μm n/a
    Autofocus No No
    Stabilization Digital Digital
    Video resolution 720p 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 MiMO
    - Wi-Fi Direct
    - Wi-Fi Hotspot
    - Wi-Fi Display
    Bluetooth version 5 5.4
    Bluetooth features LE LE
    USB type USB Type-C USB Type-C
    USB version 2 2
    USB features - Charging
    - USB Storage Mode
    - OTG    		 - Charging
    - USB Storage Mode
    - OTG
    DisplayPort n/a No
    GPS - GPS
    - GLONASS
    - Beidou
    - Galileo    		 - GPS
    - GLONASS
    - Beidou
    - Galileo
    NFC* Varies by region Yes
    Infrared Port No Yes
    Connectivity
    SIM Count*22
    SIM TypeNanoNano
    SIM ModeDual SIM StandbyDual SIM Standby
    eSIM Support *NoNo
    Hybrid SlotNoNo
    2G BandsGSM 850/900/1800/1900MHzn/a
    3G BandsWCDMA 1/5/8n/a
    LTE Bands*LTE (B1/B3/B5/B8/B38/B40/B41)n/a
    LTE category7n/a
    5G SupportNoNo

    Sound

    Speakers Mono n/a
    3.5 mm Jack Yes No
    FM Radio No Yes
    Dolby Atmos No Yes

    Other

    Class Budget Mid-range
    Announced July, 2023 yr September, 2025 yr
    Release Date August, 2023 yr October, 2025 yr
    Launch Price ($) 160 n/a
    MSRP ($) n/a 190
    Sensors - Proximity Sensor
    - Accelerometer
    - Compass
    - Fingerprint sensor    		 - Proximity Sensor
    - Gyroscope
    - Accelerometer
    - Ambient Light Sensor
    - Compass
    - Fingerprint sensor
    Charger Included Yes 33 W Yes, 45 W
    * Attention! Config, frequencies, NFC, and other specs may vary by region.

    Results

    After analyzing the data, we consider Tecno Spark Slim the clear winner in this comparison.

    Survey

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