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Allview V4 Viper Pro vs Samsung Galaxy M21

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.

    • Display technology

      OLED versus LCD

      V4 Viper Pro:
      LCD
      Galaxy M21:
      OLED

    • Width

      Galaxy M21: 6.9 mm narrower

      V4 Viper Pro:
      82 mm
      Galaxy M21:
      75.1 mm

    • Screen diagonal

      Galaxy M21: 0.4 in smaller diagonal

      V4 Viper Pro:
      6.8 in
      Galaxy M21:
      6.4 in

    • Chipset

      V4 Viper Pro:
      Mediatek MT6739 (28 nm)
      Galaxy M21:
      Exynos 9611 (10nm)

    • Height

      Galaxy M21: 12 mm shorter

      V4 Viper Pro:
      171 mm
      Galaxy M21:
      159 mm

    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 +12 mm versus Galaxy M21
      Width:
      82 mm +6.9 mm versus Galaxy M21
      Depth:
      8.8 mm

    2. 2. Galaxy M21

      Height:
      159 mm
      Width:
      75.1 mm
      Depth:
      8.9 mm

    Weight

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

    1. 1. V4 Viper Pro

      191.6 g

      +3.6 g versus Galaxy M21

    2. 2. Galaxy M21

      188 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. Galaxy M21

      Screen diagonal:
      6.4 in
      Aspect ratio (height:width):
      19.5:9
      Approximate rectangular screen area:
      100.5 cm²

    V4 Viper Pro has approximately 14.8% more rectangular screen area than Galaxy M21.

    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, Galaxy M21, compared at the same storage capacity.
    StorageV4 Viper ProGalaxy M21
    32 GB 2 GB RAM Not recorded
    64 GB Not recorded 4 GB RAM
    128 GB Not recorded 6 GB RAM

    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. Galaxy M21

    NFC:
    Unknown
    Headphone jack:
    Yes
    Memory card support:
    See details microSDXC (dedicated slot)

    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

    2. 2. Galaxy M21

      6000 mAh

      +2500 mAh versus V4 Viper Pro

    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. Galaxy M21

    Everyday essentials
    Everyday essentials — specifications for V4 Viper Pro, Galaxy M21.
    SpecificationV4 Viper ProGalaxy M21
    Dimensions (HxWxD)
    • 171 Х 82 Х 8.8 mm
    • 159 Х 75.1 Х 8.9 mm
    Weight
    • 191.6 g
    • 188 g
    Technology
    • IPS LCD
    • Super AMOLED
    Screen size
    • 6.8" inch
    • 6.4" inch
    Screen resolution
    • 640 x 1352 px
    • 1080 x 2340 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 32GB 2GB RAM
    • 64GB 4GB RAM
    • 128GB 6GB RAM
    Memory card support
    • microSD
    • up to 128 GB (uses shared SIM slot)
    • microSDXC (dedicated slot)
    Battery Capacity is not battery life. No endurance test is implied.
    • 3500 mAh
    • Non-removable Li-Po
    • 6000 mAh
    • Non-removable Li-Po
    Operating system OS
    • Android 9.0 (Pie)
    • Android 10.0; One UI 2
    Chipset
    • Mediatek MT6739 (28 nm)
    • Exynos 9611 (10nm)
    NFC
    • Super AMOLED
    		 Unknown
    Headphone jack
    • Yes
    • Yes
    Display
    Display — specifications for V4 Viper Pro, Galaxy M21.
    SpecificationV4 Viper ProGalaxy M21
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors
    • 16M
    • 16M
    Screen area
    • 115.4 cm2
    • 100.5 cm2
    Screen format
    • 19:9 (height:width)
    • 19.5:9 (height:width)
    Screen to body ratio
    • 82.3%
    • 84.2%
    PPI /points per inch/
    • 220 PPI
    • 403 PPI
    Screen protection Unknown
    • Corning Gorilla Glass 3
    Camera and Video
    Camera and Video — specifications for V4 Viper Pro, Galaxy M21.
    SpecificationV4 Viper ProGalaxy M21
    Rear camera, main
    • 13 MP
    • Dual-LED flash
    • 48 MP
    • Triple
    Camera specs
    • 13 MP
    • AF -0.3 MP
    • (ultrawide/depth sensor)
    • 48 MP
    • f/2.0
    • 26mm (wide)
    • 1/2.0''
    • 0.8µm
    • PDAF -8 MP
    • f/2.2
    • 12mm (ultrawide)
    • 1/4.0''
    • 1.12µm -5 MP
    • (depth)
    Functions
    • Dual-LED flash
    • HDR
    Video
    • 1080p@30fps
    • 1080p@30fps
    Front camera, selfie
    • 8 MP
    • Single
    • 20 MP
    • Single
    Specifications
    • 8 MP
    • 20 MP
    • f/2.0
    • 26mm (wide)
    Performance

    Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

    Performance — specifications for V4 Viper Pro, Galaxy M21.
    SpecificationV4 Viper ProGalaxy M21
    Processor CPU
    • Quad-core 1.3 GHz Cortex-A53
    • Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
    Graphics processor GPU
    • PowerVR GE8100
    • Mali-G72 MP3
    Antutu 8 score * Unknown
    • 182451
    General specs
    General specs — specifications for V4 Viper Pro, Galaxy M21.
    SpecificationV4 Viper ProGalaxy M21
    Release date
    • 2020
    • January
    • 2020
    • March 18
    Colors
    • Dark Grey
    • Midnight Blue
    • Raven Black
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 170 EUR
    • 160 EUR
    Body build Unknown
    • Glass front (Gorilla Glass 3)
    • plastic back
    • plastic frame
    Communication and Connectivity
    Communication and Connectivity — specifications for V4 Viper Pro, Galaxy M21.
    SpecificationV4 Viper ProGalaxy M21
    SIM card
    • Dual SIM (Nano-SIM
    • dual stand-by)
    • Dual SIM (Nano-SIM
    • dual stand-by)
    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)
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
    • 3(1800)
    • 5(850)
    • 7(2600)
    • 8(900)
    • 20(800)
    • 38(2600)
    • 40(2300)
    • 41(2500)
    Speed
    • HSPA 21.1/5.76 Mbps
    • LTE Cat4 150/50 Mbps
    • HSPA
    • LTE-A
    GPRS
    • Yes
    • Yes
    Edge
    • Yes
    • Yes
    Wi-Fi
    • Wi-Fi 802.11 b/g/n
    • hotspot
    • Wi-Fi 802.11 a/b/g/n/ac
    • dual-band
    • Wi-Fi Direct
    • hotspot
    GPS
    • Yes
    • with A-GPS
    • GLONASS
    • Yes
    • with A-GPS
    • GLONASS
    • BDS
    USB
    • microUSB 2.0
    • 2.0
    • Type-C 1.0 reversible connector
    Bluetooth
    • 4.0
    • A2DP
    • 5.0
    • A2DP
    • LE
    Harmful irradiation
    • SAR EU - 1.20 W/kg (head)
    • SAR - 0.47 W/kg (head)
    Music and Audio
    Music and Audio — specifications for V4 Viper Pro, Galaxy M21.
    SpecificationV4 Viper ProGalaxy M21
    Radio
    • FM radio
    • FM radio
    • RDS
    • recording
    Others Unknown
    • 420 nits max brightness
    Other features
    Other features — specifications for V4 Viper Pro, Galaxy M21.
    SpecificationV4 Viper ProGalaxy M21
    Dop
    • Sensors Fingerprint (rear-mounted)
    • Sensors Accelerometer
    • proximity - Battery charging 10W - For Europe
    • Sensors Fingerprint (rear-mounted)
    • accelerometer
    • gyro
    • proximity
    • compass - Fast charging 15W