OnePlus 8 vs Samsung Galaxy A21

Compare recorded specifications, size and practical differences.

+ Add a third phone

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.

  • Rear camera layout

    8:
    Triple
    Galaxy A21:
    Quad

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. 8

    Height:
    160.2 mm
    Width:
    72.9 mm
    Depth:
    8 mm
    Weight:
    180 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. 8

    Screen diagonal:
    6.55 in
    Aspect ratio (height:width):
    20:9
    Approximate rectangular screen area:
    103.6 cm²
  2. 2. Galaxy A21

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

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 8, Galaxy A21, compared at the same storage capacity.
Storage8Galaxy A21
32 GB Not recorded 3 GB RAM
128 GB 8 GB RAM Not recorded
256 GB 12 GB RAM Not recorded

Practical features

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

1. 8

NFC:
Yes
Headphone jack:
No
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. 8

    4300 mAh

    +300 mAh versus Galaxy A21

  2. 2. Galaxy A21

    4000 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. 82. Galaxy A21

Everyday essentials
Everyday essentials — specifications for 8, Galaxy A21.
Specification8Galaxy A21
Dimensions (HxWxD)
  • 160.2 Х 72.9 Х 8 mm
  • Х Х mm
Weight
  • 180 g
  • 0 g
Technology
  • Fluid AMOLED
  • Super AMOLED
Screen size
  • 6.55" inch
  • 6.5" inch
Screen resolution
  • 1080 x 2400 px
  • 720 x 1600 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128GB 8GB RAM
  • 256GB 12GB RAM
  • 32GB 3GB RAM
Memory card support
  • No
  • microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 4300 mAh
  • Non-removable Li-Po
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 10.0; OxygenOS 10.0
  • Android 10.0; One UI 2.0
Chipset
  • Qualcomm SM8250 Snapdragon 865 (7 nm+)
Unknown
NFC
  • Yes
  • Yes (market/region dependent)
Headphone jack
  • No
  • Yes
Display
Display — specifications for 8, Galaxy A21.
Specification8Galaxy A21
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 103.6 cm2
  • 102.0 cm2
Screen format
  • 20:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 88.7%
Unknown
PPI /points per inch/
  • 402 PPI
  • 270 PPI
Screen protection
  • Corning Gorilla Glass
Unknown
Camera and Video
Camera and Video — specifications for 8, Galaxy A21.
Specification8Galaxy A21
Rear camera, main
  • 48 MP
  • Triple
  • 16 MP
  • Quad
Camera specs
  • 48 MP
  • f/1.8
  • 25mm (wide)
  • 1/2.0''
  • 0.8µm
  • PDAF
  • OIS -16 MP
  • f/2.2
  • 13mm (ultrawide)
  • PDAF -2 MP
  • f/2.4
  • (macro)
  • 16 MP
  • (wide)
  • AF -8 MP
  • (ultrawide) -2 MP
  • (macro) -2 MP
  • (depth)
Functions
  • Auto-HDR
  • LED flash
  • panorama
  • HDR
Video
  • 1080p@30fps
  • gyro-EIS
  • 1080p@30fps
Front camera, selfie
  • 16 MP
  • Single
  • 13 MP
  • Single
Specifications
  • 16 MP
  • f/2.0
  • (wide)
  • 1/3''
  • 1.0µm
  • 13 MP
  • (wide)
Performance
Performance — specifications for 8, Galaxy A21.
Specification8Galaxy A21
Processor CPU
  • Octa-core (1x2.84 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.8 GHz Kryo 585)
Unknown
Graphics processor GPU
  • Adreno 650
Unknown
General specs
General specs — specifications for 8, Galaxy A21.
Specification8Galaxy A21
Release date
  • 2020
  • April 14
  • 2020
  • April 8
Colors
  • Onyx Black
  • Glacial Green
  • Interstellar Glow
  • Polar Silver
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 700 EUR
  • 250 EUR
Body build
  • Glass front (Gorilla Glass)
  • glass back (Gorilla Glass)
  • aluminum frame
  • Glass front
  • plastic back
  • plastic frame
Communication and Connectivity
Communication and Connectivity — specifications for 8, Galaxy A21.
Specification8Galaxy 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 2CDMA 800 / 1900 & TD-SCDMA -3G - HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 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)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
  • 42(3500)
  • 46(5200)
  • 66(1700/2100) - EU -5G - 5G band 1(2100)
  • 78(3500); SA/NSA - EU 5G band 2(1900)
  • 66(1700)
  • 71(600); SA/NSA - NA 5G band 78(3500); SA/NSA - IN 5G band 41(2500)
  • 78(3500)
  • 79(4700); SA/NSA - CNmmWave - Verizon exclusive
  • 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 (5CA) Cat18 1200/150 Mbps
  • 5G 7.5 Gbps DL
  • 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/ax
  • dual-band
  • Wi-Fi Direct
  • DLNA
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with dual-band A-GPS
  • GLONASS
  • BDS
  • GALILEO
  • SBAS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • 3.1
  • Type-C 1.0 reversible connector
  • USB On-The-Go
  • Yes
Bluetooth
  • 5.1
  • A2DP
  • LE
  • aptX HD
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for 8, Galaxy A21.
Specification8Galaxy A21
Radio
  • No
  • FM radio
Others
  • HDR10+ -90Hz refresh rate
Unknown
Other features
Other features — specifications for 8, Galaxy A21.
Specification8Galaxy A21
Dop
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast charging 30W
  • 50% in 22 min (advertised) - IP68 dust/water resistant (up to 1.5m for 30 mins)
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass - Fast charging 15W - Preliminary specifications