Yezz Billy 4 vs ZTE Zmax 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.

  • Weight

    Billy 4: 65.9 g lighter

    Billy 4:
    109 g
    Zmax Pro:
    174.9 g
  • Width

    Billy 4: 19.4 mm narrower

    Billy 4:
    64.4 mm
    Zmax Pro:
    83.8 mm
  • Screen diagonal

    Billy 4: 2 in smaller diagonal

    Billy 4:
    4 in
    Zmax Pro:
    6 in
  • Chipset

    Billy 4:
    Qualcomm MSM8212 Snapdragon 200 (28 nm)
    Zmax Pro:
    Qualcomm MSM8952 Snapdragon 617 (28 nm)
  • Depth

    Zmax Pro: 1 mm thinner

    Billy 4:
    9.9 mm
    Zmax Pro:
    8.9 mm
  • Height

    Billy 4: 42.6 mm shorter

    Billy 4:
    122.5 mm
    Zmax Pro:
    165.1 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. Billy 4

    Height:
    122.5 mm
    Width:
    64.4 mm
    Depth:
    9.9 mm +1 mm versus Zmax Pro
  2. 2. Zmax Pro

    Height:
    165.1 mm +42.6 mm versus Billy 4
    Width:
    83.8 mm +19.4 mm versus Billy 4
    Depth:
    8.9 mm

Weight

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

  1. 1. Billy 4

    109 g

  2. 2. Zmax Pro

    174.9 g

    +65.9 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. Zmax Pro

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

Zmax Pro has approximately 117.9% 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, Zmax Pro, compared at the same storage capacity.
StorageBilly 4Zmax Pro
32 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. Zmax Pro

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (dedicated 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. Billy 4

    1300 mAh

  2. 2. Zmax Pro

    3400 mAh

    +2100 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. Zmax Pro

Everyday essentials
Everyday essentials — specifications for Billy 4, Zmax Pro.
SpecificationBilly 4Zmax Pro
Dimensions (HxWxD)
  • 122.5 Х 64.4 Х 9.9 mm
  • 165.1 Х 83.8 Х 8.9 mm
Weight
  • 109 g
  • 174.9 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 4" inch
  • 6" inch
Screen resolution
  • 480 x 800 px
  • 1080 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 32 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 256 GB
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1300 mAh
  • Removable Li-Ion
  • 3400 mAh
  • Non-removable Li-Ion
Operating system OS
  • Microsoft Windows Phone 8.1
  • Android 6.0 (Marshmallow)
Chipset
  • Qualcomm MSM8212 Snapdragon 200 (28 nm)
  • Qualcomm MSM8952 Snapdragon 617 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Billy 4, Zmax Pro.
SpecificationBilly 4Zmax Pro
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 45.5 cm2
  • 99.2 cm2
Screen format
  • 5:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 57.7%
  • 71.7%
PPI /points per inch/
  • 233 PPI
  • 367 PPI
Screen protection Unknown
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video — specifications for Billy 4, Zmax Pro.
SpecificationBilly 4Zmax Pro
Rear camera, main
  • 8 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 8 MP
  • AF
  • 13 MP
  • f/2.2
  • 20mm (ultrawide)
  • PDAF
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

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

Performance — specifications for Billy 4, Zmax Pro.
SpecificationBilly 4Zmax Pro
Processor CPU
  • Quad-core 1.2 GHz Cortex-A7
  • Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
Graphics processor GPU
  • Adreno 302
  • Adreno 405
GeekBench 4 Single Core * Unknown
  • 699
GeekBench 4 Multi-Core * Unknown
  • 2028
GeekBench 4 RenderScript * Unknown
  • 2128
General specs
General specs — specifications for Billy 4, Zmax Pro.
SpecificationBilly 4Zmax Pro
Release date
  • 2014
  • June
  • 2016
  • July
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)
  • Stand by time- Up to 400 h (3G) Talking time- Up to 25 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for Billy 4, Zmax Pro.
SpecificationBilly 4Zmax Pro
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 a/b/g/n
  • WiFi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
Bluetooth
  • 4.0
  • A2DP
  • 4.1
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Billy 4, Zmax Pro.
SpecificationBilly 4Zmax Pro
Radio
  • Stereo FM radio
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Billy 4, Zmax Pro.
SpecificationBilly 4Zmax Pro
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass