Allview A4 Duo vs Oppo Realme X

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.

  • Weight

    A4 Duo: 80.4 g lighter

    A4 Duo:
    110.6 g
    Realme X:
    191 g
  • Width

    A4 Duo: 12.8 mm narrower

    A4 Duo:
    63.2 mm
    Realme X:
    76 mm
  • Screen diagonal

    A4 Duo: 3.03 in smaller diagonal

    A4 Duo:
    3.5 in
    Realme X:
    6.53 in
  • Rear camera layout

    A4 Duo:
    Single
    Realme X:
    Dual
  • Depth

    Realme X: 2.6 mm thinner

    A4 Duo:
    12 mm
    Realme X:
    9.4 mm
  • Height

    A4 Duo: 45.1 mm shorter

    A4 Duo:
    116.1 mm
    Realme X:
    161.2 mm

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. A4 Duo

    Height:
    116.1 mm
    Width:
    63.2 mm
    Depth:
    12 mm +2.6 mm versus Realme X
  2. 2. Realme X

    Height:
    161.2 mm +45.1 mm versus A4 Duo
    Width:
    76 mm +12.8 mm versus A4 Duo
    Depth:
    9.4 mm

Weight

Bars start at zero and share a scale within this chart.

  1. 1. A4 Duo

    110.6 g

  2. 2. Realme X

    191 g

    +80.4 g versus A4 Duo

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. A4 Duo

    Screen diagonal:
    3.5 in
    Aspect ratio (height:width):
    3:2
    Approximate rectangular screen area:
    36.5 cm²
  2. 2. Realme X

    Screen diagonal:
    6.53 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    104.7 cm²

Realme X has approximately 187% more rectangular screen area than A4 Duo.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

A4 Duo: Original memory entry

512 MB RAM - Liquid M2208 GB

Realme X: Original memory entry

128/256 GB · 8 GB RAM 64 GB · 4/6 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. A4 Duo

NFC:
See details Super AMOLED
Headphone jack:
Yes
Memory card support:
See details panorama

2. Realme X

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

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. A4 Duo

    1200 mAh

  2. 2. Realme X

    3765 mAh

    +2565 mAh versus A4 Duo

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. A4 Duo2. Realme X

Everyday essentials
Everyday essentials — specifications for A4 Duo, Realme X.
SpecificationA4 DuoRealme X
Dimensions (HxWxD)
  • 116.1 Х 63.2 Х 12 mm
  • 161.2 Х 76 Х 9.4 mm
Weight
  • 110.6 g
  • 191 g
Technology
  • TFT
  • AMOLED
Screen size
  • 3.5" inch
  • 6.53" inch
Screen resolution
  • 320 x 480 px
  • 1080 x 2340 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 512 MB RAM - Liquid M2208 GB
  • 128/256 GB
  • 8 GB RAM 64 GB
  • 4/6 GB RAM
Memory card support
  • panorama
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1200 mAh
  • Removable Li-Ion
  • 3765 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 4.2 (Jelly Bean)
  • Android 9.0 (Pie); ColorOS 6
Chipset Unknown
  • Qualcomm SDM710 Snapdragon 710 (10 nm)
NFC
  • Super AMOLED
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for A4 Duo, Realme X.
SpecificationA4 DuoRealme X
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • Super AMOLED
  • 16M
Screen area
  • 36.5 cm2
  • 105.2 cm2
Screen format
  • 3:2 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 149.7 g
  • 85.9%
PPI /points per inch/
  • 165 PPI
  • 394 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for A4 Duo, Realme X.
SpecificationA4 DuoRealme X
Rear camera, main
  • 2 MP
  • Single
  • 48 MP
  • Dual
Camera specs
  • 2 MP
  • 48 MP
  • f/1.7
  • (wide)
  • 26mm (wide)
  • 1/2''
  • 0.8µm
  • PDAF -5 MP
  • f/2.4
  • depth sensor
Functions Unknown
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 16 MP
  • Single
Specifications
  • Super AMOLED
  • Motorized pop-up 16 MP
  • f/2.0
  • 25mm (wide)
  • 1/3''
  • 1.0µm
Performance

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

Performance — specifications for A4 Duo, Realme X.
SpecificationA4 DuoRealme X
Processor CPU
  • Dual-core 1.0 GHz Cotex-A7
  • Octa-core (2x2.2 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)
Graphics processor GPU
  • Mali-400MP2 Z525 -Mali-T720MP2 Z528
  • Adreno 616
Antutu 7 score *
  • 11698
Unknown
GeekBench 5 Single Core * Unknown
  • 334
GeekBench 5 Multi-Core * Unknown
  • 1444
General specs
General specs — specifications for A4 Duo, Realme X.
SpecificationA4 DuoRealme X
Release date
  • 2013
  • November
  • 2019
  • May
Colors
  • Black
  • Steam white
  • Punk Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 80 EUR
  • 160 EUR
Battery life
  • Stand by time- Up to 200 h Talking time- Up to 8 h 20 min
Unknown
Body build Unknown
  • Front glass (Gorilla Glass 5)
  • plastic body
Communication and Connectivity
Communication and Connectivity — specifications for A4 Duo, Realme X.
SpecificationA4 DuoRealme X
SIM card
  • Dual SIM (dual stand-by)
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA - China -3G - HSDPA 850 / 900 / 1700(AWS) / 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)
Speed
  • HSPA 42.2/5.76 Mbps
  • HSPA 42.2/11.5 Mbps
  • LTE-A (2CA) Cat6 300/75 Mbps
GPRS
  • Class 12
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi Direct
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
GPS
  • panorama
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 4.0
  • A2DP
  • EDR
  • 5.0
  • A2DP
  • LE
  • aptX HD
Music and Audio
Music and Audio — specifications for A4 Duo, Realme X.
SpecificationA4 DuoRealme X
Radio
  • FM radio
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic -Dolby Atmos sound
Other features
Other features — specifications for A4 Duo, Realme X.
SpecificationA4 DuoRealme X
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Fingerprint (under display)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging 20W: 55% in 30 min (VOOC 3.0) - Versions: RMX1901