Oppo Realme X2 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.

  • Release year

    Realme X2:
    2019
    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. Realme X2

    Height:
    158.7 mm
    Width:
    75.2 mm
    Depth:
    8.6 mm
    Weight:
    182 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. Realme X2

    Screen diagonal:
    6.4 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    100.5 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 Realme X2, Galaxy A21, compared at the same storage capacity.
StorageRealme X2Galaxy A21
32 GB Not recorded 3 GB RAM
64 GB 6 GB RAM Not recorded
128 GB 6 / 8 GB RAM Alternative RAM configurations Not recorded
256 GB 8 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. Realme X2

NFC:
Yes
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (dedicated slot)

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. Realme X2

    4000 mAh

  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. Realme X22. Galaxy A21

Everyday essentials
Everyday essentials — specifications for Realme X2, Galaxy A21.
SpecificationRealme X2Galaxy A21
Dimensions (HxWxD)
  • 158.7 Х 75.2 Х 8.6 mm
  • Х Х mm
Weight
  • 182 g
  • 0 g
Technology
  • Super AMOLED
  • Super AMOLED
Screen size
  • 6.4" inch
  • 6.5" inch
Screen resolution
  • 1080 x 2340 px
  • 720 x 1600 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64GB 6GB RAM
  • 128GB 6GB RAM
  • 128GB 8GB RAM
  • 256GB 8GB RAM
  • 32GB 3GB RAM
Memory card support
  • microSD
  • up to 256 GB (dedicated slot)
  • microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 4000 mAh
  • Non-removable Li-Po
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 9.0 (Pie)
  • planned upgrade to Android 10.0; ColorOS 6
  • Android 10.0; One UI 2.0
Chipset
  • Qualcomm SDM730 Snapdragon 730G (8 nm)
Unknown
NFC
  • Yes
  • Yes (market/region dependent)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Realme X2, Galaxy A21.
SpecificationRealme X2Galaxy A21
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 100.5 cm2
  • 102.0 cm2
Screen format
  • 19.5:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 84.3%
Unknown
PPI /points per inch/
  • 403 PPI
  • 270 PPI
Screen protection
  • Corning Gorilla Glass 5
Unknown
Camera and Video
Camera and Video — specifications for Realme X2, Galaxy A21.
SpecificationRealme X2Galaxy A21
Rear camera, main
  • 64 MP
  • Quad
  • 16 MP
  • Quad
Camera specs
  • 64 MP
  • f/1.8
  • (wide)
  • 1/1.7''
  • 0.8µm
  • PDAF -8 MP
  • f/2.3
  • 13mm (ultrawide)
  • 1/4''
  • 1.12µm -2 MP
  • f/2.4
  • 1/5''
  • 1.75µm (dedicated macro camera) -2 MP
  • 1.75µm
  • depth sensor
  • 16 MP
  • (wide)
  • AF -8 MP
  • (ultrawide) -2 MP
  • (macro) -2 MP
  • (depth)
Functions
  • HDR
  • LED flash
  • panorama
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 32 MP
  • Single
  • 13 MP
  • Single
Specifications
  • 32 MP
  • f/2.0
  • 13 MP
  • (wide)
Performance
Performance — specifications for Realme X2, Galaxy A21.
SpecificationRealme X2Galaxy A21
Processor CPU
  • Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
Unknown
Graphics processor GPU
  • Adreno 618
Unknown
General specs
General specs — specifications for Realme X2, Galaxy A21.
SpecificationRealme X2Galaxy A21
Release date
  • 2019
  • September
  • 2020
  • April 8
Colors
  • Pearl White
  • Pearl Blue
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 210 EUR
  • 250 EUR
Body build
  • Front/back glass (Gorilla Glass 5)
  • plastic frame
  • Glass front
  • plastic back
  • plastic frame
Communication and Connectivity
Communication and Connectivity — specifications for Realme X2, Galaxy A21.
SpecificationRealme X2Galaxy 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 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 8(900)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
  • 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 42.2/11.5 Mbps
  • LTE-A
  • 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
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • 2.0
  • Type-C 1.0 reversible connector
  • Yes
Bluetooth
  • 5.0
  • A2DP
  • LE
  • 5.0
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Realme X2, Galaxy A21.
SpecificationRealme X2Galaxy A21
Radio
  • FM radio
  • FM radio
Others
  • Dolby Atmos
Unknown
Other features
Other features — specifications for Realme X2, Galaxy A21.
SpecificationRealme X2Galaxy A21
Dop
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging 30W: 67% in 30 min (VOOC Flash Charge 3.0)
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass - Fast charging 15W - Preliminary specifications