Allview X2 Soul Pro vs Yezz Billy 4

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

    Billy 4: 17.5 g lighter

    X2 Soul Pro:
    126.5 g
    Billy 4:
    109 g
  • Width

    Billy 4: 8 mm narrower

    X2 Soul Pro:
    72.4 mm
    Billy 4:
    64.4 mm
  • Screen diagonal

    Billy 4: 1.2 in smaller diagonal

    X2 Soul Pro:
    5.2 in
    Billy 4:
    4 in
  • Chipset

    X2 Soul Pro:
    Mediatek MT6752 (28 nm)
    Billy 4:
    Qualcomm MSM8212 Snapdragon 200 (28 nm)
  • Depth

    X2 Soul Pro: 4.4 mm thinner

    X2 Soul Pro:
    5.5 mm
    Billy 4:
    9.9 mm
  • Height

    Billy 4: 26.3 mm shorter

    X2 Soul Pro:
    148.8 mm
    Billy 4:
    122.5 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. X2 Soul Pro

    Height:
    148.8 mm +26.3 mm versus Billy 4
    Width:
    72.4 mm +8 mm versus Billy 4
    Depth:
    5.5 mm
  2. 2. Billy 4

    Height:
    122.5 mm
    Width:
    64.4 mm
    Depth:
    9.9 mm +4.4 mm versus X2 Soul Pro

Weight

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

  1. 1. X2 Soul Pro

    126.5 g

    +17.5 g versus Billy 4

  2. 2. Billy 4

    109 g

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. X2 Soul Pro

    Screen diagonal:
    5.2 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    74.5 cm²
  2. 2. Billy 4

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²

X2 Soul Pro has approximately 63.7% more rectangular screen area than Billy 4.

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 X2 Soul Pro, Billy 4, compared at the same storage capacity.
StorageX2 Soul ProBilly 4
16 GB 2 GB RAM Unknown
Billy 4: Original memory entry

4 GB · 512 MB 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. X2 Soul Pro

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

2. Billy 4

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB

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. X2 Soul Pro

    2700 mAh

    +1400 mAh versus Billy 4

  2. 2. Billy 4

    1300 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. X2 Soul Pro2. Billy 4

Everyday essentials
Everyday essentials — specifications for X2 Soul Pro, Billy 4.
SpecificationX2 Soul ProBilly 4
Dimensions (HxWxD)
  • 148.8 Х 72.4 Х 5.5 mm
  • 122.5 Х 64.4 Х 9.9 mm
Weight
  • 126.5 g
  • 109 g
Technology
  • Super AMOLED
  • TFT
Screen size
  • 5.2" inch
  • 4" inch
Screen resolution
  • 1080 x 1920 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 16 GB
  • 2 GB RAM
  • 4 GB
  • 512 MB RAM
Memory card support
  • panorama
  • microSD
  • up to 256 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 2700 mAh
  • Non-removable Li-Po
  • 1300 mAh
  • Removable Li-Ion
Operating system OS
  • Android 5.0 (Lollipop)
  • Microsoft Windows Phone 8.1
Chipset
  • Mediatek MT6752 (28 nm)
  • Qualcomm MSM8212 Snapdragon 200 (28 nm)
NFC
  • Super AMOLED
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for X2 Soul Pro, Billy 4.
SpecificationX2 Soul ProBilly 4
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • Super AMOLED
  • 16M
Screen area
  • 74.5 cm2
  • 45.5 cm2
Screen format
  • 16:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 145 Х 69.2 Х 7 mm
  • 57.7%
PPI /points per inch/
  • 424 PPI
  • 233 PPI
Screen protection
  • Corning Gorilla Glass 4
Unknown
Camera and Video
Camera and Video — specifications for X2 Soul Pro, Billy 4.
SpecificationX2 Soul ProBilly 4
Rear camera, main
  • 13 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 13 MP
  • AF
  • 8 MP
  • AF
Functions
  • Dual-LED flash
  • HDR
  • LED flash
Video
  • 1080p@30fps
  • 720p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 1.3 MP
  • Single
Specifications
  • 8 MP
  • 1.3 MP
Performance

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

Performance — specifications for X2 Soul Pro, Billy 4.
SpecificationX2 Soul ProBilly 4
Processor CPU
  • Octa-core 1.7 GHz Cortex-A53
  • Quad-core 1.2 GHz Cortex-A7
Graphics processor GPU
  • Mali-T760MP2
  • Adreno 302
Antutu 7 score *
  • 39265
Unknown
General specs
General specs — specifications for X2 Soul Pro, Billy 4.
SpecificationX2 Soul ProBilly 4
Release date
  • 2015
  • March
  • 2014
  • June
Colors
  • White/Gold
  • Black
  • White
  • Black
  • Red
  • Gun Metal
  • Blue
  • Yellow
  • Champing Gold
Battery life
  • Stand by time- Up to 270 h Talking time- Up to 12 h 50 min
  • Stand by time- Up to 350 h (2G) / Up to 300 h (3G) Talking time- Up to 7 h (2G) / Up to 4 h 30 min (3G)
Communication and Connectivity
Communication and Connectivity — specifications for X2 Soul Pro, Billy 4.
SpecificationX2 Soul ProBilly 4
SIM card
  • Single SIM (Micro-SIM)Dual SIM (Micro-SIM
  • dual stand-by)
  • Dual SIM (Micro-SIM)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 1900 / 2100-4G - LTE band 2(1900)
  • 3(1800)
  • 7(2600)
  • 8(900)
  • 20(800)
  • 38(2600)
  • 40(2300)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Speed
  • HSPA 21.1/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA 42.2/5.76 Mbps
GPRS
  • Class 10
  • Class 12
Edge
  • Class 12
  • Class 12
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 a/b/g/n
  • dual-band
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 4.0
  • A2DP
  • EDR
  • 4.0
  • A2DP
Harmful irradiation
  • SAR EU - 0.54 W/kg (head) 0.84 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for X2 Soul Pro, Billy 4.
SpecificationX2 Soul ProBilly 4
Radio
  • FM radio
  • Stereo FM radio
Others
  • DTS sound -Active noise cancellation with dedicated mic
Unknown
Other features
Other features — specifications for X2 Soul Pro, Billy 4.
SpecificationX2 Soul ProBilly 4
Dop
  • Sensors Accelerometer
  • gyro
  • proximity
  • compass
  • Sensors Accelerometer
  • proximity