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Vodafone Smart first 7 vs ZTE Blade 20

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

      Smart first 7: 80 g lighter

      Smart first 7:
      110 g
      Blade 20:
      190 g

    • Width

      Smart first 7: 13.8 mm narrower

      Smart first 7:
      62.8 mm
      Blade 20:
      76.6 mm

    • Screen diagonal

      Smart first 7: 2.99 in smaller diagonal

      Smart first 7:
      3.5 in
      Blade 20:
      6.49 in

    • Chipset

      Smart first 7:
      Spreadtrum SC7731G
      Blade 20:
      Mediatek MT6771 Helio P70 (12nm)

    • Rear camera layout

      Smart first 7:
      Single
      Blade 20:
      Dual

    • Depth

      Blade 20: 3 mm thinner

      Smart first 7:
      12 mm
      Blade 20:
      9 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. Smart first 7

      Height:
      114.4 mm
      Width:
      62.8 mm
      Depth:
      12 mm +3 mm versus Blade 20

    2. 2. Blade 20

      Height:
      162.9 mm +48.5 mm versus Smart first 7
      Width:
      76.6 mm +13.8 mm versus Smart first 7
      Depth:
      9 mm

    Weight

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

    1. 1. Smart first 7

      110 g

    2. 2. Blade 20

      190 g

      +80 g versus Smart first 7

    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. Smart first 7

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

    2. 2. Blade 20

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

    Blade 20 has approximately 183.5% more rectangular screen area than Smart first 7.

    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 Smart first 7, Blade 20, compared at the same storage capacity.
    StorageSmart first 7Blade 20
    128 GB Unknown 4 GB RAM
    Smart first 7: Original memory entry

    4 GB · 512 MB 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. Smart first 7

    NFC:
    Unknown
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 64 GB (dedicated slot)

    2. Blade 20

    NFC:
    Unknown
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 256 GB (uses shared SIM 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. Smart first 7

      1400 mAh

    2. 2. Blade 20

      5000 mAh

      +3600 mAh versus Smart first 7

    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. Smart first 72. Blade 20

    Everyday essentials
    Everyday essentials — specifications for Smart first 7, Blade 20.
    SpecificationSmart first 7Blade 20
    Dimensions (HxWxD)
    • 114.4 Х 62.8 Х 12 mm
    • 162.9 Х 76.6 Х 9 mm
    Weight
    • 110 g
    • 190 g
    Technology
    • TFT TN
    • IPS LCD
    Screen size
    • 3.5" inch
    • 6.49" inch
    Screen resolution
    • 320 x 480 px
    • 720 x 1560 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 4 GB
    • 512 MB RAM
    • 128GB 4GB RAM
    Memory card support
    • microSD
    • up to 64 GB (dedicated slot)
    • microSD
    • up to 256 GB (uses shared SIM slot)
    Battery Capacity is not battery life. No endurance test is implied.
    • 1400 mAh
    • Removable Li-Ion
    • 5000 mAh
    • Non-removable Li-Po
    Operating system OS
    • Android 5.1 (Lollipop)
    • Android 9.0 (Pie)
    Chipset
    • Spreadtrum SC7731G
    • Mediatek MT6771 Helio P70 (12nm)
    Headphone jack
    • Yes
    • Yes
    Display
    Display — specifications for Smart first 7, Blade 20.
    SpecificationSmart first 7Blade 20
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors Unknown
    • 16M
    Screen area
    • 36.5 cm2
    • 103.4 cm2
    Screen format
    • 3:2 (height:width)
    • 19.5:9 (height:width)
    Screen to body ratio
    • 50.8%
    • 82.9%
    PPI /points per inch/
    • 165 PPI
    • 265 PPI
    Camera and Video
    Camera and Video — specifications for Smart first 7, Blade 20.
    SpecificationSmart first 7Blade 20
    Rear camera, main
    • 2 MP
    • Single
    • 16 MP
    • Dual
    Camera specs
    • 2 MP
    • 16 MP
    • f/2.0
    • PDAF -8 MP
    • 12mm (ultrawide) -2 MP
    • depth sensor
    Functions Unknown
    • LED flash
    • HDR
    • panorama
    Video
    • 720p@30fps
    • 1080p@30fps
    Front camera, selfie
    • 0 MP,
    • 8 MP
    • Single
    Specifications Unknown
    • 8 MP
    • f/2.4
    Performance
    Performance — specifications for Smart first 7, Blade 20.
    SpecificationSmart first 7Blade 20
    Processor CPU
    • Quad-core 1.3 GHz Cortex-A7
    • Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
    Graphics processor GPU
    • Mali-400MP2
    • Mali-G72 MP3
    General specs
    General specs — specifications for Smart first 7, Blade 20.
    SpecificationSmart first 7Blade 20
    Release date
    • 2016
    • May
    • 2019
    • October
    Colors
    • Volcano Black
    • Tech White
    • Turquoise
    • Magic red
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 30 EUR
    • 130 EUR
    Battery life
    • Talking time- Up to 5 h (3G)
    		 Unknown
    Body build Unknown
    • Front glass
    • plastic body
    Communication and Connectivity
    Communication and Connectivity — specifications for Smart first 7, Blade 20.
    SpecificationSmart first 7Blade 20
    SIM card
    • Mini-SIM
    • Hybrid Dual SIM (Nano-SIM
    • dual stand-by)
    Network
    • Show all network frequencies: -2G - GSM 900 / 1800
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE (unspecified)
    Speed
    • HSPA 21.1/5.76 Mbps
    • HSPA 42.2/5.76 Mbps
    • LTE-A
    GPRS
    • Yes
    • Yes
    Edge
    • Yes
    • Yes
    Wi-Fi
    • Wi-Fi 802.11 b/g/n
    • hotspot
    • Wi-Fi 802.11 b/g/n
    • hotspot
    GPS
    • A-GPS only
    • Yes
    • with A-GPS
    • GLONASS
    USB
    • microUSB 2.0
    • microUSB 2.0
    • USB On-The-Go
    Bluetooth
    • 2.1
    • A2DP
    • 5.0
    • A2DP
    • LE
    Music and Audio
    Music and Audio — specifications for Smart first 7, Blade 20.
    SpecificationSmart first 7Blade 20
    Radio
    • FM radio
    • FM radio
    • recording
    Others Unknown
    • Active noise cancellation with dedicated mic
    Other features
    Other features — specifications for Smart first 7, Blade 20.
    SpecificationSmart first 7Blade 20
    Dop
    • Sensors No
    • Sensors Fingerprint (rear-mounted)
    • accelerometer
    • proximity
    • compass - Fast battery charging 18W

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