Yezz Billy 4 vs ZTE Warp 7

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

    Billy 4: 49.8 g lighter

    Billy 4:
    109 g
    Warp 7:
    158.8 g
  • Width

    Billy 4: 11.6 mm narrower

    Billy 4:
    64.4 mm
    Warp 7:
    76 mm
  • Screen diagonal

    Billy 4: 1.5 in smaller diagonal

    Billy 4:
    4 in
    Warp 7:
    5.5 in
  • Depth

    Warp 7: 0.8 mm thinner

    Billy 4:
    9.9 mm
    Warp 7:
    9.1 mm
  • Height

    Billy 4: 31.7 mm shorter

    Billy 4:
    122.5 mm
    Warp 7:
    154.2 mm
  • Release year

    Billy 4:
    2014
    Warp 7:
    2016

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. Billy 4

    Height:
    122.5 mm
    Width:
    64.4 mm
    Depth:
    9.9 mm +0.8 mm versus Warp 7
  2. 2. Warp 7

    Height:
    154.2 mm +31.7 mm versus Billy 4
    Width:
    76 mm +11.6 mm versus Billy 4
    Depth:
    9.1 mm

Weight

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

  1. 1. Billy 4

    109 g

  2. 2. Warp 7

    158.8 g

    +49.8 g versus Billy 4

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. Billy 4

    Screen diagonal:
    4 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    45.5 cm²
  2. 2. Warp 7

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

Warp 7 has approximately 83.1% 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 Billy 4, Warp 7, compared at the same storage capacity.
StorageBilly 4Warp 7
16 GB Unknown 2 GB RAM
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. Billy 4

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

2. Warp 7

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. Billy 4

    1300 mAh

  2. 2. Warp 7

    3000 mAh

    +1700 mAh versus Billy 4

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. Billy 42. Warp 7

Everyday essentials
Everyday essentials — specifications for Billy 4, Warp 7.
SpecificationBilly 4Warp 7
Dimensions (HxWxD)
  • 122.5 Х 64.4 Х 9.9 mm
  • 154.2 Х 76 Х 9.1 mm
Weight
  • 109 g
  • 158.8 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 4" inch
  • 5.5" inch
Screen resolution
  • 480 x 800 px
  • 720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 16 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 256 GB
  • microSD
  • up to 256 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 1300 mAh
  • Removable Li-Ion
  • 3000 mAh
  • Removable Li-Po
Operating system OS
  • Microsoft Windows Phone 8.1
  • Android 6.0 (Marshmallow)
Chipset
  • Qualcomm MSM8212 Snapdragon 200 (28 nm)
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Billy 4, Warp 7.
SpecificationBilly 4Warp 7
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 45.5 cm2
  • 83.4 cm2
Screen format
  • 5:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 57.7%
  • 71.2%
PPI /points per inch/
  • 233 PPI
  • 267 PPI
Camera and Video
Camera and Video — specifications for Billy 4, Warp 7.
SpecificationBilly 4Warp 7
Rear camera, main
  • 8 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 8 MP
  • AF
  • 13 MP
  • AF
Functions
  • LED flash
  • LED flash
  • HDR
  • panorama
Video
  • 720p@30fps
  • 1080p@30fps
Front camera, selfie
  • 1.3 MP
  • Single
  • 5 MP
  • Single
Specifications
  • 1.3 MP
  • 5 MP
Performance
Performance — specifications for Billy 4, Warp 7.
SpecificationBilly 4Warp 7
Processor CPU
  • Quad-core 1.2 GHz Cortex-A7
  • Quad-core 1.2 GHz
Graphics processor GPU
  • Adreno 302
Unknown
General specs
General specs — specifications for Billy 4, Warp 7.
SpecificationBilly 4Warp 7
Release date
  • 2014
  • June
  • 2016
  • August
Colors
  • White
  • Black
  • Red
  • Gun Metal
  • Blue
  • Yellow
  • Champing Gold
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer. Unknown
  • 110 EUR
Battery life
  • 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)
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Billy 4, Warp 7.
SpecificationBilly 4Warp 7
SIM card
  • Dual SIM (Micro-SIM)
  • Nano-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 -3G - HSDPA 850 / 1700(AWS) / 1900 -4G - LTE band 2(1900)
  • 4(1700/2100)
  • 12(700)
Speed
  • HSPA 42.2/5.76 Mbps
  • HSPA
  • LTE Cat4 150/50 Mbps
GPRS
  • Class 12
  • Yes
Edge
  • Class 12
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n
  • dual-band
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 4.0
  • A2DP
  • 4.0
  • A2DP
Music and Audio
Music and Audio — specifications for Billy 4, Warp 7.
SpecificationBilly 4Warp 7
Radio
  • Stereo FM radio
  • FM radio
Other features
Other features — specifications for Billy 4, Warp 7.
SpecificationBilly 4Warp 7
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer
  • proximity
  • compass