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OnePlus 6 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.

    • Screen diagonal

      6: 0.22 in smaller diagonal

      6:
      6.28 in
      Galaxy A21:
      6.5 in

    • Rear camera layout

      6:
      Dual
      Galaxy A21:
      Quad

    • Release year

      6:
      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. 6

      Height:
      155.7 mm
      Width:
      75.4 mm
      Depth:
      7.8 mm
      Weight:
      177 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. 6

      Screen diagonal:
      6.28 in
      Aspect ratio (height:width):
      19:9
      Approximate rectangular screen area:
      98.4 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 3.6% more rectangular screen area than 6.

    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 6, Galaxy A21, compared at the same storage capacity.
    Storage6Galaxy A21
    32 GB Unknown 3 GB RAM
    6: Original memory entry

    128/256 GB · 8 GB RAM 64 GB · 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. 6

    NFC:
    Yes
    Headphone jack:
    Yes
    Memory card support:
    No

    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. 6

      3300 mAh

    2. 2. Galaxy A21

      4000 mAh

      +700 mAh versus 6

    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. 62. Galaxy A21

    Everyday essentials
    Everyday essentials — specifications for 6, Galaxy A21.
    Specification6Galaxy A21
    Dimensions (HxWxD)
    • 155.7 Х 75.4 Х 7.8 mm
    • Х Х mm
    Weight
    • 177 g
    • 0 g
    Technology
    • Optic AMOLED
    • Super AMOLED
    Screen size
    • 6.28" inch
    • 6.5" inch
    Screen resolution
    • 1080 x 2280 px
    • 720 x 1600 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 128/256 GB
    • 8 GB RAM 64 GB
    • 6 GB RAM
    • 32GB 3GB RAM
    Memory card support
    • No
    • microSDXC (dedicated slot)
    Battery Capacity is not battery life. No endurance test is implied.
    • 3300 mAh
    • Non-removable Li-Po
    • 4000 mAh
    • Non-removable Li-Po
    Operating system OS
    • Android 8.1 (Oreo)
    • upgradable to Android 9.0 (Pie); OxygenOS 9.0.2
    • Android 10.0; One UI 2.0
    Chipset
    • Qualcomm SDM845 Snapdragon 845 (10 nm)
    		 Unknown
    NFC
    • Yes
    • Yes (market/region dependent)
    Headphone jack
    • Yes
    • Yes
    Display
    Display — specifications for 6, Galaxy A21.
    Specification6Galaxy A21
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors
    • 16M
    • 16M
    Screen area
    • 98.4 cm2
    • 102.0 cm2
    Screen format
    • 19:9 (height:width)
    • 20:9 (height:width)
    Screen to body ratio
    • 83.8%
    		 Unknown
    PPI /points per inch/
    • 402 PPI
    • 270 PPI
    Screen protection
    • Corning Gorilla Glass 5
    		 Unknown
    Camera and Video

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

    Camera and Video — specifications for 6, Galaxy A21.
    Specification6Galaxy A21
    Rear camera, main
    • 16 MP
    • Dual
    • 16 MP
    • Quad
    Camera specs
    • 16 MP
    • f/1.7
    • 25mm (wide)
    • 1/2.6''
    • 1.22µm
    • OIS
    • PDAF -20 MP (16 MP effective)
    • 1/2.8''
    • 1.0µm
    • PDAF
    • 16 MP
    • (wide)
    • AF -8 MP
    • (ultrawide) -2 MP
    • (macro) -2 MP
    • (depth)
    Functions
    • Auto-HDR
    • gyro-EIS
    • LED flash
    • panorama
    • HDR
    Video
    • 1080p@30fps
    • 1080p@30fps
    Front camera, selfie
    • 16 MP
    • Single
    • 13 MP
    • Single
    Specifications
    • 16 MP
    • f/2.0
    • 25mm (wide)
    • 1/3.1''
    • 1.0µm
    • 13 MP
    • (wide)
    DxOMark Main Score *
    • 96
    		 Unknown
    DxOMark Photo *
    • 100
    		 Unknown
    DxOMark Video *
    • 87
    		 Unknown
    Performance

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

    Performance — specifications for 6, Galaxy A21.
    Specification6Galaxy A21
    Processor CPU
    • Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver)
    		 Unknown
    Graphics processor GPU
    • Adreno 630
    		 Unknown
    Antutu 7 score *
    • 297021
    		 Unknown
    GeekBench 4 Single Core *
    • 2390
    		 Unknown
    GeekBench 4 Multi-Core *
    • 8846
    		 Unknown
    GeekBench 4 RenderScript *
    • 13505
    		 Unknown
    Antutu 8 score *
    • 357294
    		 Unknown
    GeekBench 4 Battery *
    • 3565
    		 Unknown
    GeekBench 5 Single Core *
    • 501
    		 Unknown
    GeekBench 5 Multi-Core *
    • 2216
    		 Unknown
    General specs
    General specs — specifications for 6, Galaxy A21.
    Specification6Galaxy A21
    Release date
    • 2018
    • May
    • 2020
    • April 8
    Colors
    • Midnight Black
    • Mirror Black
    • Silk White
    • Amber Red
    • Black
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 520 EUR
    • 250 EUR
    Body build
    • Front/back glass
    • aluminum frame
    • Glass front
    • plastic back
    • plastic frame
    Communication and Connectivity
    Communication and Connectivity — specifications for 6, Galaxy A21.
    Specification6Galaxy A21
    SIM card
    • Dual SIM (Nano-SIM
    • dual stand-by)
    • Single SIM (Nano-SIM)Dual SIM (Nano-SIM
    • dual stand-by)
    Network
    • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 / 1900 & TD-SCDMA -3G - HSDPA 800 / 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)
    • 17(700)
    • 18(800)
    • 19(800)
    • 20(800)
    • 25(1900)
    • 26(850)
    • 28(700)
    • 29(700)
    • 30(2300)
    • 32(1500)
    • 34(2000)
    • 38(2600)
    • 39(1900)
    • 40(2300)
    • 41(2500)
    • 66(1700/2100)
    • 71(600) - Europe
    • North America LTE band 1(2100)
    • 66(1700/2100) - India
    • Asia
    • China
    • 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 42.2/5.76 Mbps
    • LTE-A (4CA) Cat16 1024/150 Mbps
    • HSPA 42.2/5.76 Mbps
    • LTE Cat4 150/50 Mbps
    GPRS
    • Yes
    • Yes
    Edge
    • Yes
    • Yes
    Wi-Fi
    • Wi-Fi 802.11 a/b/g/n/ac
    • dual-band
    • WiFi Direct
    • DLNA
    • hotspot
    • Wi-Fi 802.11 b/g/n
    • Wi-Fi Direct
    • hotspot
    GPS
    • Yes
    • with A-GPS
    • GLONASS
    • BDS
    • GALILEO
    • Yes
    • with A-GPS
    • GLONASS
    • BDS
    USB
    • 2.0
    • Type-C 1.0 reversible connector
    • Yes
    Bluetooth
    • 5.0
    • A2DP
    • LE
    • aptX HD
    • 5.0
    • A2DP
    • LE
    Music and Audio
    Music and Audio — specifications for 6, Galaxy A21.
    Specification6Galaxy A21
    Radio
    • No
    • FM radio
    Others
    • DCI-P3
    • Active noise cancellation with dedicated mic -Dirac HD sound
    		 Unknown
    Other features
    Other features — specifications for 6, Galaxy A21.
    Specification6Galaxy A21
    Dop
    • Sensors Fingerprint (rear-mounted)
    • accelerometer
    • gyro
    • proximity
    • compass - Fast battery charging 5V 4A 20W (Dash Charge) - Splash resistant - For Europe
    • Asia
    • North America
    • China
    • Sensors Fingerprint (rear-mounted)
    • accelerometer
    • proximity
    • compass - Fast charging 15W - Preliminary specifications

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