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Samsung Galaxy A21 vs Samsung Galaxy S8

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.

    • Screen diagonal

      Galaxy S8: 0.7 in smaller diagonal

      Galaxy A21:
      6.5 in
      Galaxy S8:
      5.8 in

    • Rear camera layout

      Galaxy A21:
      Quad
      Galaxy S8:
      Single

    • Release year

      Galaxy A21:
      2020
      Galaxy S8:
      2017

    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. Galaxy A21

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

      Unavailable dimensions are omitted from the drawing.

    2. 2. Galaxy S8

      Height:
      148.9 mm
      Width:
      68.1 mm
      Depth:
      8 mm
      Weight:
      155 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. Galaxy A21

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

    2. 2. Galaxy S8

      Screen diagonal:
      5.8 in
      Aspect ratio (height:width):
      18.5:9
      Approximate rectangular screen area:
      85.4 cm²

    Galaxy A21 has approximately 19.5% more rectangular screen area than Galaxy S8.

    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 Galaxy A21, Galaxy S8, compared at the same storage capacity.
    StorageGalaxy A21Galaxy S8
    32 GB 3 GB RAM Unknown
    Galaxy S8: Original memory entry

    64 GB · 512GB 4GB

    Practical features

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

    1. Galaxy A21

    NFC:
    See details Yes (market/region dependent)
    Headphone jack:
    Yes
    Memory card support:
    See details microSDXC (dedicated slot)

    2. Galaxy S8

    NFC:
    Yes
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 512 GB (uses SIM 2 slot) - dual SIM model only

    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. Galaxy A21

      4000 mAh

      +1000 mAh versus Galaxy S8

    2. 2. Galaxy S8

      3000 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. Galaxy A212. Galaxy S8

    Everyday essentials
    Everyday essentials — specifications for Galaxy A21, Galaxy S8.
    SpecificationGalaxy A21Galaxy S8
    Dimensions (HxWxD)
    • Х Х mm
    • 148.9 Х 68.1 Х 8 mm
    Weight
    • 0 g
    • 155 g
    Technology
    • Super AMOLED
    • Super AMOLED
    Screen size
    • 6.5" inch
    • 5.8" inch
    Screen resolution
    • 720 x 1600 px
    • 1440 x 2960 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 32GB 3GB RAM
    • 64 GB
    • 512GB 4GB
    Memory card support
    • microSDXC (dedicated slot)
    • microSD
    • up to 512 GB (uses SIM 2 slot) - dual SIM model only
    Battery Capacity is not battery life. No endurance test is implied.
    • 4000 mAh
    • Non-removable Li-Po
    • 3000 mAh
    • Non-removable Li-Ion
    Operating system OS
    • Android 10.0; One UI 2.0
    • Android 7.0 (Nougat)
    • upgradable to Android 8.0 (Oreo)
    Chipset Unknown
    • Exynos 8895 Octa (10 nm) EMEA -Qualcomm MSM8998 Snapdragon 835 (10 nm) USA & China
    NFC
    • Yes (market/region dependent)
    • Yes
    Headphone jack
    • Yes
    • Yes
    Display
    Display — specifications for Galaxy A21, Galaxy S8.
    SpecificationGalaxy A21Galaxy S8
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors
    • 16M
    • 16M
    Screen area
    • 102.0 cm2
    • 84.8 cm2
    Screen format
    • 20:9 (height:width)
    • 18.5:9 (height:width)
    Screen to body ratio Unknown
    • 83.6%
    PPI /points per inch/
    • 270 PPI
    • 570 PPI
    Screen protection Unknown
    • Corning Gorilla Glass 5
    Camera and Video

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

    Camera and Video — specifications for Galaxy A21, Galaxy S8.
    SpecificationGalaxy A21Galaxy S8
    Rear camera, main
    • 16 MP
    • Quad
    • 12 MP
    • Single
    Camera specs
    • 16 MP
    • (wide)
    • AF -8 MP
    • (ultrawide) -2 MP
    • (macro) -2 MP
    • (depth)
    • 12 MP
    • f/1.7
    • 26mm (wide)
    • 1/2.55''
    • 1.4µm
    • OIS
    • dual pixel PDAF
    Functions
    • LED flash
    • panorama
    • HDR
    • Dual video call
    • Auto-HDR
    Video
    • 1080p@30fps
    • 1440p@30fps
    Front camera, selfie
    • 13 MP
    • Single
    • 8 MP
    • Single
    Specifications
    • 13 MP
    • (wide)
    • 8 MP
    • f/1.7
    • 25mm (wide)
    • 1/3.6''
    • 1.22µm
    • AF
    DxOMark Photo * Unknown
    • 71
    DxOMark Video * Unknown
    • 75
    DxOMark Selfie Score * Unknown
    • 73
    Performance

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

    Performance — specifications for Galaxy A21, Galaxy S8.
    SpecificationGalaxy A21Galaxy S8
    Processor CPU Unknown
    • Octa-core (4x2.3 GHz Mongoose M2 & 4x1.7 GHz Cortex-A53) EMEA -Octa-core (4x2.35 GHz Kryo & 4x1.9 GHz Kryo) USA & China
    Graphics processor GPU Unknown
    • Mali-G71 MP20 EMEA -Adreno 540 USA & China
    Antutu 7 score * Unknown
    • 202356
    GeekBench 4 Single Core * Unknown
    • 1763
    GeekBench 4 Multi-Core * Unknown
    • 6028
    GeekBench 4 RenderScript * Unknown
    • 8798
    Antutu 8 score * Unknown
    • 231907
    GeekBench 4 Battery * Unknown
    • 3410
    GeekBench 5 Single Core * Unknown
    • 340
    GeekBench 5 Multi-Core * Unknown
    • 1454
    General specs
    General specs — specifications for Galaxy A21, Galaxy S8.
    SpecificationGalaxy A21Galaxy S8
    Release date
    • 2020
    • April 8
    • 2017
    • March
    Colors
    • Black
    • Midnight Black
    • Orchid Gray
    • Arctic Silver
    • Coral Blue
    • Maple Gold
    • Rose Pink
    • Burgundy Red
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 250 EUR
    • 390 EUR
    Battery life Unknown
    • Talking time- Up to 20 h (3G) Music play - Up to 67 h
    Body build
    • Glass front
    • plastic back
    • plastic frame
    • Front/back glass (Gorilla Glass 5)
    • aluminum frame
    Communication and Connectivity
    Communication and Connectivity — specifications for Galaxy A21, Galaxy S8.
    SpecificationGalaxy A21Galaxy S8
    SIM card
    • Single SIM (Nano-SIM)Dual SIM (Nano-SIM
    • dual stand-by)
    • Single SIM (Nano-SIM)Hybrid Dual SIM (Nano-SIM
    • dual stand-by)
    Network
    • 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
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
    • 2(1900)
    • 3(1800)
    • 4(1700/2100)
    • 5(850)
    • 7(2600)
    • 8(900)
    • 12(700)
    • 13(700)
    • 17(700)
    • 18(800)
    • 19(800)
    • 20(800)
    • 25(1900)
    • 26(850)
    • 28(700)
    • 32(1500)
    • 66(1700/2100)
    • 38(2600)
    • 39(1900)
    • 40(2300)
    • 41(2500)
    Speed
    • HSPA 42.2/5.76 Mbps
    • LTE Cat4 150/50 Mbps
    • HSPA 42.2/5.76 Mbps
    • LTE-A (5CA) Cat16 1024/150 Mbps
    GPRS
    • Yes
    • Yes
    Edge
    • Yes
    • Yes
    Wi-Fi
    • Wi-Fi 802.11 b/g/n
    • Wi-Fi Direct
    • hotspot
    • Wi-Fi 802.11 a/b/g/n/ac
    • dual-band
    • Wi-Fi Direct
    • hotspot
    GPS
    • Yes
    • with A-GPS
    • GLONASS
    • BDS
    • Yes
    • with A-GPS
    • GLONASS
    • BDS
    • GALILEO
    USB
    • Yes
    • 3.1
    • Type-C 1.0 reversible connector
    Bluetooth
    • 5.0
    • A2DP
    • LE
    • 5.0
    • A2DP
    • LE
    • aptX
    Harmful irradiation Unknown
    • SAR - 0.44 W/kg (head) 0.75 W/kg (body) SAR EU - 0.32 W/kg (head) 1.27 W/kg (body)
    Music and Audio
    Music and Audio — specifications for Galaxy A21, Galaxy S8.
    SpecificationGalaxy A21Galaxy S8
    Radio
    • FM radio
    • No
    Others Unknown
    • HDR10 -3D Touch (home button only) -Always-on display
    • 32-bit/384kHz audio -Active noise cancellation with dedicated mic
    Other features
    Other features — specifications for Galaxy A21, Galaxy S8.
    SpecificationGalaxy A21Galaxy S8
    Dop
    • Sensors Fingerprint (rear-mounted)
    • accelerometer
    • proximity
    • compass - Fast charging 15W - Preliminary specifications
    • Sensors Iris scanner
    • fingerprint (rear-mounted)
    • accelerometer
    • gyro
    • proximity
    • compass
    • barometer
    • heart rate
    • SpO2 - Samsung DeX (desktop experience support) -Fast battery charging (Quick Charge 2.0) -Qi/PMA wireless charging (market dependent) -ANT+ -Bixby natural language commands and dictation - Samsung Pay (Visa
    • MasterCard certified) -IP68 dust/water proof (up to 1.5m for 30 mins) - Versions: G950F (Europe
    • Global Single-SIM); G950FD (Global Dual-SIM); G950U (USA Unlocked); G950A (AT&T); G950P (Sprint); G950T (T-Mobile); G950V (Verizon); G950R4 (US Cellular); G950W (Canada); G950

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