Allview V4 Viper Pro vs Energizer Energy E520 LTE

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.

  • Weight

    V4 Viper Pro: 14.4 g lighter

    V4 Viper Pro:
    191.6 g
    Energy E520 LTE:
    206 g
  • Width

    Energy E520 LTE: 5.8 mm narrower

    V4 Viper Pro:
    82 mm
    Energy E520 LTE:
    76.2 mm
  • Screen diagonal

    Energy E520 LTE: 1.6 in smaller diagonal

    V4 Viper Pro:
    6.8 in
    Energy E520 LTE:
    5.2 in
  • Chipset

    V4 Viper Pro:
    Mediatek MT6739 (28 nm)
    Energy E520 LTE:
    Mediatek MT6737 (28 nm)
  • Depth

    V4 Viper Pro: 2.3 mm thinner

    V4 Viper Pro:
    8.8 mm
    Energy E520 LTE:
    11.1 mm
  • Height

    Energy E520 LTE: 20.2 mm shorter

    V4 Viper Pro:
    171 mm
    Energy E520 LTE:
    150.8 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. V4 Viper Pro

    Height:
    171 mm +20.2 mm versus Energy E520 LTE
    Width:
    82 mm +5.8 mm versus Energy E520 LTE
    Depth:
    8.8 mm
  2. 2. Energy E520 LTE

    Height:
    150.8 mm
    Width:
    76.2 mm
    Depth:
    11.1 mm +2.3 mm versus V4 Viper Pro

Weight

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

  1. 1. V4 Viper Pro

    191.6 g

  2. 2. Energy E520 LTE

    206 g

    +14.4 g versus V4 Viper Pro

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. V4 Viper Pro

    Screen diagonal:
    6.8 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    115.4 cm²
  2. 2. Energy E520 LTE

    Screen diagonal:
    5.2 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    74.5 cm²

V4 Viper Pro has approximately 54.8% more rectangular screen area than Energy E520 LTE.

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 V4 Viper Pro, Energy E520 LTE, compared at the same storage capacity.
StorageV4 Viper ProEnergy E520 LTE
16 GB Not recorded 2 GB RAM
32 GB 2 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. V4 Viper Pro

NFC:
See details Super AMOLED
Headphone jack:
Yes
Memory card support:
See details microSD · up to 128 GB (uses shared SIM slot)

2. Energy E520 LTE

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (uses SIM 2 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. V4 Viper Pro

    3500 mAh

  2. 2. Energy E520 LTE

    4000 mAh

    +500 mAh versus V4 Viper Pro

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. V4 Viper Pro2. Energy E520 LTE

Everyday essentials
Everyday essentials — specifications for V4 Viper Pro, Energy E520 LTE.
SpecificationV4 Viper ProEnergy E520 LTE
Dimensions (HxWxD)
  • 171 Х 82 Х 8.8 mm
  • 150.8 Х 76.2 Х 11.1 mm
Weight
  • 191.6 g
  • 206 g
Technology
  • IPS LCD
  • LTPS IPS LCD
Screen size
  • 6.8" inch
  • 5.2" inch
Screen resolution
  • 640 x 1352 px
  • 720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32GB 2GB RAM
  • 16 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 128 GB (uses shared SIM slot)
  • microSD
  • up to 32 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3500 mAh
  • Non-removable Li-Po
  • 4000 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 9.0 (Pie)
  • Android 6.0 (Marshmallow)
Chipset
  • Mediatek MT6739 (28 nm)
  • Mediatek MT6737 (28 nm)
NFC
  • Super AMOLED
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for V4 Viper Pro, Energy E520 LTE.
SpecificationV4 Viper ProEnergy E520 LTE
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 115.4 cm2
  • 74.5 cm2
Screen format
  • 19:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 82.3%
  • 64.9%
PPI /points per inch/
  • 220 PPI
  • 282 PPI
Screen protection Unknown
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video — specifications for V4 Viper Pro, Energy E520 LTE.
SpecificationV4 Viper ProEnergy E520 LTE
Rear camera, main
  • 13 MP
  • Dual-LED flash
  • 13 MP
  • Single
Camera specs
  • 13 MP
  • AF -0.3 MP
  • (ultrawide/depth sensor)
  • 13 MP
  • AF
Functions
  • Dual-LED flash
  • LED flash
  • HDR
  • panorama
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 5 MP
  • Single
Specifications
  • 8 MP
  • 5 MP
Performance

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

Performance — specifications for V4 Viper Pro, Energy E520 LTE.
SpecificationV4 Viper ProEnergy E520 LTE
Processor CPU
  • Quad-core 1.3 GHz Cortex-A53
  • Quad-core 1.3 GHz Cortex-A53
Graphics processor GPU
  • PowerVR GE8100
  • Mali-T720
Antutu 7 score * Unknown
  • 29852
GeekBench 4 Single Core * Unknown
  • 528
GeekBench 4 Multi-Core * Unknown
  • 1486
General specs
General specs — specifications for V4 Viper Pro, Energy E520 LTE.
SpecificationV4 Viper ProEnergy E520 LTE
Release date
  • 2020
  • January
  • 2017
  • September
Colors
  • Dark Grey
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 170 EUR
  • 330 EUR
Battery life Unknown
  • Stand by time- Up to 220 h (3G) Talking time- Up to 15 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for V4 Viper Pro, Energy E520 LTE.
SpecificationV4 Viper ProEnergy E520 LTE
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Hybrid Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE band 1(2100)
  • 3(1800)
  • 7(2600)
  • 20(800)
  • 38(2600)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 7(2600)
  • 8(900)
  • 20(800)
Speed
  • HSPA 21.1/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA 42.2/11.5 Mbps
  • LTE Cat4 150/50 Mbps
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • Yes
  • with A-GPS
  • GLONASS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 4.0
  • A2DP
  • 4.0
  • A2DP
  • LE
Harmful irradiation
  • SAR EU - 1.20 W/kg (head)
  • SAR - 0.26 W/kg (head) 0.60 W/kg (body)
Music and Audio
Music and Audio — specifications for V4 Viper Pro, Energy E520 LTE.
SpecificationV4 Viper ProEnergy E520 LTE
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for V4 Viper Pro, Energy E520 LTE.
SpecificationV4 Viper ProEnergy E520 LTE
Dop
  • Sensors Fingerprint (rear-mounted)
  • Sensors Accelerometer
  • proximity - Battery charging 10W - For Europe
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity
  • compass - IP68 dust/water proof (up to 1.5m for 30 mins) -MIL-STD-810G compliant