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A1 Smart N9 vs Samsung Galaxy A21

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

      Smart N9:
      LCD
      Galaxy A21:
      OLED

    • Screen diagonal

      Smart N9: 1 in smaller diagonal

      Smart N9:
      5.5 in
      Galaxy A21:
      6.5 in

    • Rear camera layout

      Smart N9:
      Single
      Galaxy A21:
      Quad

    • Release year

      Smart N9:
      2018
      Galaxy A21:
      2020

    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 N9

      Height:
      147.1 mm
      Width:
      68.8 mm
      Depth:
      8.7 mm
      Weight:
      145 g

    2. 2. Galaxy A21

      Height:
      Unknown
      Width:
      Unknown
      Depth:
      Unknown
      Weight:
      Unknown

      Unavailable dimensions are omitted from the drawing.

    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 N9

      Screen diagonal:
      5.5 in
      Aspect ratio (height:width):
      18:9
      Approximate rectangular screen area:
      78.1 cm²

    2. 2. Galaxy A21

      Screen diagonal:
      6.5 in
      Aspect ratio (height:width):
      20:9
      Approximate rectangular screen area:
      102 cm²

    Galaxy A21 has approximately 30.7% more rectangular screen area than Smart N9.

    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 N9, Galaxy A21, compared at the same storage capacity.
    StorageSmart N9Galaxy A21
    16 GB 2 GB RAM Not recorded
    32 GB Not recorded 3 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. Smart N9

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

    2. Galaxy A21

    NFC:
    See details Yes (market/region dependent)
    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. Smart N9

      2900 mAh

    2. 2. Galaxy A21

      4000 mAh

      +1100 mAh versus Smart N9

    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 N92. Galaxy A21

    Everyday essentials
    Everyday essentials — specifications for Smart N9, Galaxy A21.
    SpecificationSmart N9Galaxy A21
    Dimensions (HxWxD)
    • 147.1 Х 68.8 Х 8.7 mm
    • Х Х mm
    Weight
    • 145 g
    • 0 g
    Technology
    • IPS LCD
    • Super AMOLED
    Screen size
    • 5.5" inch
    • 6.5" inch
    Screen resolution
    • 720 x 1440 px
    • 720 x 1600 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 16GB 2GB RAM
    • 32GB 3GB RAM
    Memory card support
    • microSD
    • up to 32 GB
    • microSDXC (dedicated slot)
    Battery Capacity is not battery life. No endurance test is implied.
    • 2900 mAh
    • Non-removable Li-Ion
    • 4000 mAh
    • Non-removable Li-Po
    Operating system OS
    • Android 8.1 (Oreo)
    • Android 10.0; One UI 2.0
    Chipset
    • Mediatek MT6739WA (28 nm)
    		 Unknown
    NFC
    • Yes
    • Yes (market/region dependent)
    Headphone jack
    • Yes
    • Yes
    Display
    Display — specifications for Smart N9, Galaxy A21.
    SpecificationSmart N9Galaxy A21
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors
    • 16M
    • 16M
    Screen area
    • 78.1 cm2
    • 102.0 cm2
    Screen format
    • 18:9 (height:width)
    • 20:9 (height:width)
    Screen to body ratio
    • 77.1%
    		 Unknown
    PPI /points per inch/
    • 293 PPI
    • 270 PPI
    Camera and Video
    Camera and Video — specifications for Smart N9, Galaxy A21.
    SpecificationSmart N9Galaxy A21
    Rear camera, main
    • 13 MP
    • Single
    • 16 MP
    • Quad
    Camera specs
    • 13 MP
    • AF
    • 16 MP
    • (wide)
    • AF -8 MP
    • (ultrawide) -2 MP
    • (macro) -2 MP
    • (depth)
    Functions
    • LED flash
    • LED flash
    • panorama
    • HDR
    Video
    • 1080p@30fps
    • 1080p@30fps
    Front camera, selfie
    • 8 MP
    • Single
    • 13 MP
    • Single
    Specifications
    • 8 MP
    • 13 MP
    • (wide)
    Performance
    Performance — specifications for Smart N9, Galaxy A21.
    SpecificationSmart N9Galaxy A21
    Processor CPU
    • Quad-core 1.3 GHz Cortex-A53
    		 Unknown
    Graphics processor GPU
    • Mali-T720MP2
    		 Unknown
    General specs
    General specs — specifications for Smart N9, Galaxy A21.
    SpecificationSmart N9Galaxy A21
    Release date
    • 2018
    • June
    • 2020
    • April 8
    Colors
    • Silver Aluminium
    • Black Titanium
    • Black
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 120 EUR
    • 250 EUR
    Body build Unknown
    • Glass front
    • plastic back
    • plastic frame
    Communication and Connectivity
    Communication and Connectivity — specifications for Smart N9, Galaxy A21.
    SpecificationSmart N9Galaxy A21
    SIM card
    • Nano-SIM
    • Single SIM (Nano-SIM)Dual SIM (Nano-SIM
    • dual stand-by)
    Network
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA -4G - LTE (unspecified)
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM only) -3G - HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 1700(AWS) / 1900 / 2100 -4G - LTE
    Speed
    • HSPA
    • LTE Cat4 150/50 Mbps
    • HSPA 42.2/5.76 Mbps
    • LTE Cat4 150/50 Mbps
    GPRS
    • Yes
    • Yes
    Edge
    • Yes
    • Yes
    Wi-Fi
    • Wi-Fi 802.11 b/g/n
    • hotspot
    • Wi-Fi 802.11 b/g/n
    • Wi-Fi Direct
    • hotspot
    GPS
    • Yes
    • with A-GPS
    • Yes
    • with A-GPS
    • GLONASS
    • BDS
    USB
    • microUSB 2.0
    • Yes
    Bluetooth
    • 4.0
    • A2DP
    • 5.0
    • A2DP
    • LE
    Harmful irradiation
    • SAR EU - 0.96 W/kg (head) 1.56 W/kg (body)
    		 Unknown
    Music and Audio
    Music and Audio — specifications for Smart N9, Galaxy A21.
    SpecificationSmart N9Galaxy A21
    Radio
    • FM radio
    • FM radio
    Other features
    Other features — specifications for Smart N9, Galaxy A21.
    SpecificationSmart N9Galaxy A21
    Dop
    • Sensors Fingerprint (rear-mounted)
    • accelerometer
    • gyro
    • proximity
    • compass
    • Sensors Fingerprint (rear-mounted)
    • accelerometer
    • proximity
    • compass - Fast charging 15W - Preliminary specifications

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