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Allview V4 Viper Pro vs Spice Mi-356 Smart Flo Mettle 3.5X

Compare recorded specifications, size and practical differences.

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    Key differences

    Calculated from recorded specifications using minimum difference thresholds. These are differences, not an overall ranking. For three phones, numeric highlights compare the two extremes.

    • Weight

      Mi-356 Smart Flo Mettle 3.5X: 79.6 g lighter

      V4 Viper Pro:
      191.6 g
      Mi-356 Smart Flo Mettle 3.5X:
      112 g

    • Width

      Mi-356 Smart Flo Mettle 3.5X: 19 mm narrower

      V4 Viper Pro:
      82 mm
      Mi-356 Smart Flo Mettle 3.5X:
      63 mm

    • Screen diagonal

      Mi-356 Smart Flo Mettle 3.5X: 3.3 in smaller diagonal

      V4 Viper Pro:
      6.8 in
      Mi-356 Smart Flo Mettle 3.5X:
      3.5 in

    • Depth

      V4 Viper Pro: 2.7 mm thinner

      V4 Viper Pro:
      8.8 mm
      Mi-356 Smart Flo Mettle 3.5X:
      11.5 mm

    • Height

      Mi-356 Smart Flo Mettle 3.5X: 51.1 mm shorter

      V4 Viper Pro:
      171 mm
      Mi-356 Smart Flo Mettle 3.5X:
      119.9 mm

    • Release year

      V4 Viper Pro:
      2020
      Mi-356 Smart Flo Mettle 3.5X:
      2014

    Physical size

    Relative size, not calibrated actual size. Front and side outlines share one scale and a bottom baseline. Generic outlines use recorded body dimensions, excluding camera bumps.

    1. 1. V4 Viper Pro

      Height:
      171 mm +51.1 mm versus Mi-356 Smart Flo Mettle 3.5X
      Width:
      82 mm +19 mm versus Mi-356 Smart Flo Mettle 3.5X
      Depth:
      8.8 mm

    2. 2. Mi-356 Smart Flo Mettle 3.5X

      Height:
      119.9 mm
      Width:
      63 mm
      Depth:
      11.5 mm +2.7 mm versus V4 Viper Pro

    Weight

    Bars start at zero and share a scale within this chart.

    1. 1. V4 Viper Pro

      191.6 g

      +79.6 g versus Mi-356 Smart Flo Mettle 3.5X

    2. 2. Mi-356 Smart Flo Mettle 3.5X

      112 g

    Screen size

    Approximate rectangular screens calculated from recorded diagonal and aspect ratio at one relative scale. Rounded corners and cutouts are not subtracted. These are not phone outlines or calibrated actual sizes.

    1. 1. V4 Viper Pro

      Screen diagonal:
      6.8 in
      Aspect ratio (height:width):
      19:9
      Approximate rectangular screen area:
      115.4 cm²

    2. 2. Mi-356 Smart Flo Mettle 3.5X

      Screen diagonal:
      3.5 in
      Aspect ratio (height:width):
      3:2
      Approximate rectangular screen area:
      36.5 cm²

    V4 Viper Pro has approximately 216.4% more rectangular screen area than Mi-356 Smart Flo Mettle 3.5X.

    Memory variants

    Each row compares the same storage capacity. Cells show recorded RAM alternatives, not combined maxima. Not recorded does not mean unavailable in every market.

    Recorded RAM for V4 Viper Pro, Mi-356 Smart Flo Mettle 3.5X, compared at the same storage capacity.
    StorageV4 Viper ProMi-356 Smart Flo Mettle 3.5X
    32 GB 2 GB RAM Unknown

    Practical features

    Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

    1. V4 Viper Pro

    NFC:
    See details Super AMOLED
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 128 GB (uses shared SIM slot)

    2. Mi-356 Smart Flo Mettle 3.5X

    NFC:
    Unknown
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 32 GB

    Battery capacity

    Capacity is not battery life. No endurance test is implied.

    Recorded battery capacity

    Bars start at zero and share a scale within this chart.

    1. 1. V4 Viper Pro

      3500 mAh

      +2000 mAh versus Mi-356 Smart Flo Mettle 3.5X

    2. 2. Mi-356 Smart Flo Mettle 3.5X

      1500 mAh

    Specifications

    Open a section for more detail. On narrow screens, swipe sideways or use Left/Right arrow keys while the table is focused. Unknown means missing data, not No. Recorded zero values are shown as recorded.

    1. V4 Viper Pro2. Mi-356 Smart Flo Mettle 3.5X

    Everyday essentials
    Everyday essentials — specifications for V4 Viper Pro, Mi-356 Smart Flo Mettle 3.5X.
    SpecificationV4 Viper ProMi-356 Smart Flo Mettle 3.5X
    Dimensions (HxWxD)
    • 171 Х 82 Х 8.8 mm
    • 119.9 Х 63 Х 11.5 mm
    Weight
    • 191.6 g
    • 112 g
    Technology
    • IPS LCD
    • TFT
    Screen size
    • 6.8" inch
    • 3.5" inch
    Screen resolution
    • 640 x 1352 px
    • 320 x 480 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 32GB 2GB RAM
    		 Unknown
    Memory card support
    • microSD
    • up to 128 GB (uses shared SIM slot)
    • microSD
    • up to 32 GB
    Battery Capacity is not battery life. No endurance test is implied.
    • 3500 mAh
    • Non-removable Li-Po
    • 1500 mAh
    • Li-Ion
    Operating system OS
    • Android 9.0 (Pie)
    • Android 4.2 (Jelly Bean)
    Chipset
    • Mediatek MT6739 (28 nm)
    		 Unknown
    NFC
    • Super AMOLED
    		 Unknown
    Headphone jack
    • Yes
    • Yes
    Display
    Display — specifications for V4 Viper Pro, Mi-356 Smart Flo Mettle 3.5X.
    SpecificationV4 Viper ProMi-356 Smart Flo Mettle 3.5X
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors
    • 16M
    		 Unknown
    Screen area
    • 115.4 cm2
    • 36.5 cm2
    Screen format
    • 19:9 (height:width)
    • 3:2 (height:width)
    Screen to body ratio
    • 82.3%
    • 48.3%
    PPI /points per inch/
    • 220 PPI
    • 165 PPI
    Camera and Video
    Camera and Video — specifications for V4 Viper Pro, Mi-356 Smart Flo Mettle 3.5X.
    SpecificationV4 Viper ProMi-356 Smart Flo Mettle 3.5X
    Rear camera, main
    • 13 MP
    • Dual-LED flash
    • 2 MP
    • Single
    Camera specs
    • 13 MP
    • AF -0.3 MP
    • (ultrawide/depth sensor)
    • 2 MP
    Functions
    • Dual-LED flash
    		 Unknown
    Video
    • 1080p@30fps
    • Yes
    Front camera, selfie
    • 8 MP
    • Single
    • 1.3 MP
    • Single
    Specifications
    • 8 MP
    • 1.3 MP
    Performance
    Performance — specifications for V4 Viper Pro, Mi-356 Smart Flo Mettle 3.5X.
    SpecificationV4 Viper ProMi-356 Smart Flo Mettle 3.5X
    Processor CPU
    • Quad-core 1.3 GHz Cortex-A53
    		 Unknown
    Graphics processor GPU
    • PowerVR GE8100
    		 Unknown
    General specs
    General specs — specifications for V4 Viper Pro, Mi-356 Smart Flo Mettle 3.5X.
    SpecificationV4 Viper ProMi-356 Smart Flo Mettle 3.5X
    Release date
    • 2020
    • January
    • 2014
    • January
    Colors
    • Dark Grey
    • Silver
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 170 EUR
    • 40 EUR
    Battery life Unknown
    • Stand by time- Up to 120 h Talking time- Up to 7 h 30 min
    Communication and Connectivity
    Communication and Connectivity — specifications for V4 Viper Pro, Mi-356 Smart Flo Mettle 3.5X.
    SpecificationV4 Viper ProMi-356 Smart Flo Mettle 3.5X
    SIM card
    • Dual SIM (Nano-SIM
    • dual stand-by)
    • Dual SIM (Mini-SIM)
    Network
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE band 1(2100)
    • 3(1800)
    • 7(2600)
    • 20(800)
    • 38(2600)
    		 Unknown
    Speed
    • HSPA 21.1/5.76 Mbps
    • LTE Cat4 150/50 Mbps
    		 Unknown
    GPRS
    • Yes
    • Class 12
    Edge
    • Yes
    • Class 12
    Wi-Fi
    • Wi-Fi 802.11 b/g/n
    • hotspot
    • Wi-Fi 802.11 b/g/n
    GPS
    • Yes
    • with A-GPS
    • GLONASS
    • A-GPS only
    USB
    • microUSB 2.0
    • microUSB
    Bluetooth
    • 4.0
    • A2DP
    • 2.0
    Harmful irradiation
    • SAR EU - 1.20 W/kg (head)
    		 Unknown
    Music and Audio
    Music and Audio — specifications for V4 Viper Pro, Mi-356 Smart Flo Mettle 3.5X.
    SpecificationV4 Viper ProMi-356 Smart Flo Mettle 3.5X
    Radio
    • FM radio
    • FM radio
    Other features
    Other features — specifications for V4 Viper Pro, Mi-356 Smart Flo Mettle 3.5X.
    SpecificationV4 Viper ProMi-356 Smart Flo Mettle 3.5X
    Dop
    • Sensors Fingerprint (rear-mounted)
    • Sensors Accelerometer
    • proximity - Battery charging 10W - For Europe
    • Sensors Accelerometer