Allview Viper E vs Oppo Realme X2 Pro

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.

  • Display technology

    OLED versus LCD

    Viper E:
    LCD
    Realme X2 Pro:
    OLED
  • Weight

    Viper E: 76.5 g lighter

    Viper E:
    122.5 g
    Realme X2 Pro:
    199 g
  • Width

    Viper E: 10.7 mm narrower

    Viper E:
    65 mm
    Realme X2 Pro:
    75.7 mm
  • Screen diagonal

    Viper E: 2 in smaller diagonal

    Viper E:
    4.5 in
    Realme X2 Pro:
    6.5 in
  • Chipset

    Viper E:
    Mediatek MT6582 (28 nm)
    Realme X2 Pro:
    Qualcomm SDM855 Snapdragon 855+ (7 nm)
  • Rear camera layout

    Viper E:
    Single
    Realme X2 Pro:
    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. Viper E

    Height:
    131 mm
    Width:
    65 mm
    Depth:
    7.8 mm
  2. 2. Realme X2 Pro

    Height:
    161 mm +30 mm versus Viper E
    Width:
    75.7 mm +10.7 mm versus Viper E
    Depth:
    8.7 mm +0.9 mm versus Viper E

Weight

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

  1. 1. Viper E

    122.5 g

  2. 2. Realme X2 Pro

    199 g

    +76.5 g versus Viper E

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. Viper E

    Screen diagonal:
    4.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    55.8 cm²
  2. 2. Realme X2 Pro

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

Realme X2 Pro has approximately 82.7% more rectangular screen area than Viper E.

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 Viper E, Realme X2 Pro, compared at the same storage capacity.
StorageViper ERealme X2 Pro
8 GB 1 GB RAM Not recorded
64 GB Not recorded 6 GB RAM
128 GB Not recorded 8 GB RAM
256 GB Not recorded 12 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. Viper E

NFC:
See details Super AMOLED
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated slot)

2. Realme X2 Pro

NFC:
Yes
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. Viper E

    1800 mAh

  2. 2. Realme X2 Pro

    4000 mAh

    +2200 mAh versus Viper E

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. Viper E2. Realme X2 Pro

Everyday essentials
Everyday essentials — specifications for Viper E, Realme X2 Pro.
SpecificationViper ERealme X2 Pro
Dimensions (HxWxD)
  • 131 Х 65 Х 7.8 mm
  • 161 Х 75.7 Х 8.7 mm
Weight
  • 122.5 g
  • 199 g
Technology
  • IPS LCD
  • Super AMOLED
Screen size
  • 4.5" inch
  • 6.5" inch
Screen resolution
  • 480 x 854 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 8 GB
  • 1 GB RAM
  • 64GB 6GB RAM
  • 128GB 8GB RAM
  • 256GB 12GB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1800 mAh
  • Removable Li-Ion
  • 4000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 5.0 (Lollipop)
  • Android 9.0 (Pie)
  • planned upgrade to Android 10.0; ColorOS 6.1
Chipset
  • Mediatek MT6582 (28 nm)
  • Qualcomm SDM855 Snapdragon 855+ (7 nm)
NFC
  • Super AMOLED
  • Yes
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Viper E, Realme X2 Pro.
SpecificationViper ERealme X2 Pro
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • Super AMOLED
  • 16M
Screen area
  • 55.8 cm2
  • 103.5 cm2
Screen format
  • 16:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 127.3 Х 65.5 Х 10 mm
  • 84.9%
PPI /points per inch/
  • 218 PPI
  • 402 PPI
Screen protection
  • Asahi Dragontrail Glass
  • 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 Viper E, Realme X2 Pro.
SpecificationViper ERealme X2 Pro
Rear camera, main
  • 8 MP
  • Single
  • 64 MP
  • Quad
Camera specs
  • 8 MP
  • AF
  • 64 MP
  • f/1.8
  • 26mm (wide)
  • 1/1.7"
  • 0.8µm
  • PDAF -13 MP
  • f/2.5
  • 52mm (telephoto)
  • 1/3.4"
  • 1.0µm
  • PDAF
  • 2x optical zoom -8 MP
  • f/2.2
  • 16mm (ultrawide)
  • 1/3.2"
  • 1.4µm
  • PDAF -2 MP
  • f/2.4
  • 1/5"
  • 1.75µm
  • depth sensor
Functions
  • Dual-LED flash
  • HDR
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
  • gyro-EIS
Front camera, selfie
  • 2 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 2 MP
  • 16 MP
  • f/2.0
  • 1µm
DxOMark Main Score * Unknown
  • 95
DxOMark Photo * Unknown
  • 99
DxOMark Video * Unknown
  • 86
Performance

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

Performance — specifications for Viper E, Realme X2 Pro.
SpecificationViper ERealme X2 Pro
Processor CPU
  • Quad-core 1.3 GHz Cortex-A7
  • Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.8 GHz Kryo 485)
Graphics processor GPU
  • Mali-400MP2 Z525 -Mali-T720MP2 Z528
  • Adreno 640 (700 MHz)
Antutu 7 score * Unknown
  • 472670
Antutu 8 score * Unknown
  • 482480
GeekBench 5 Single Core * Unknown
  • 660
GeekBench 5 Multi-Core * Unknown
  • 2438
General specs
General specs — specifications for Viper E, Realme X2 Pro.
SpecificationViper ERealme X2 Pro
Release date
  • 2014
  • September
  • 2019
  • October
Colors
  • Black
  • White
  • Lunar White
  • Neptune Blue
  • Red Master Edition
  • Gray Master Edition
Battery life
  • Stand by time- Up to 225 h Talking time- Up to 9 h 15 min
Unknown
Body build Unknown
  • Front/back glass (Gorilla Glass 5)
  • aluminum frame
Communication and Connectivity
Communication and Connectivity — specifications for Viper E, Realme X2 Pro.
SpecificationViper ERealme X2 Pro
SIM card
  • Single SIM (Micro-SIM)Dual SIM (Micro-SIM
  • dual stand-by)
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE band 1(2100)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO -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)
  • 26(850)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 21.1/5.76 Mbps
  • HSPA 42.2/11.5 Mbps
  • LTE-A
GPRS
  • Class 12
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with dual-band A-GPS
  • GLONASS
  • BDS
  • GALILEO
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 4.0
  • A2DP
  • EDR
  • 5.0
  • A2DP
  • LE
Harmful irradiation
  • SAR EU - 0.84 W/kg (head) 1.24 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for Viper E, Realme X2 Pro.
SpecificationViper ERealme X2 Pro
Radio
  • FM radio
  • FM radio
Others
  • DTS sound -Yamaha amplifier
  • 1000 nits max brightness -90Hz -HDR10+ -DCI-P3 100%
  • Active noise cancellation with dedicated mic -24-bit/192kHz audio (incl. speakers) -Dolby Atmos
Other features
Other features — specifications for Viper E, Realme X2 Pro.
SpecificationViper ERealme X2 Pro
Dop
  • Sensors Accelerometer
  • proximity
  • compass
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging 50W: 100% in 35 min (SuperVOOC Flash Charge)