verykool s4510 Luna vs Yezz Billy 4

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: 33 g lighter

    s4510 Luna:
    142 g
    Billy 4:
    109 g
  • Width

    Billy 4: 3.1 mm narrower

    s4510 Luna:
    67.5 mm
    Billy 4:
    64.4 mm
  • Screen diagonal

    Billy 4: 0.5 in smaller diagonal

    s4510 Luna:
    4.5 in
    Billy 4:
    4 in
  • Chipset

    s4510 Luna:
    Mediatek MT6572 (28 nm)
    Billy 4:
    Qualcomm MSM8212 Snapdragon 200 (28 nm)
  • Height

    Billy 4: 13.5 mm shorter

    s4510 Luna:
    136 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. s4510 Luna

    Height:
    136 mm +13.5 mm versus Billy 4
    Width:
    67.5 mm +3.1 mm versus Billy 4
    Depth:
    10.2 mm
  2. 2. Billy 4

    Height:
    122.5 mm
    Width:
    64.4 mm
    Depth:
    9.9 mm

Weight

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

  1. 1. s4510 Luna

    142 g

    +33 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. s4510 Luna

    Screen diagonal:
    4.5 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    57.6 cm²
  2. 2. Billy 4

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

s4510 Luna has approximately 26.6% 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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

s4510 Luna: Original memory entry

4 GB · 512 MB 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. s4510 Luna

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

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. s4510 Luna

    1650 mAh

    +350 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. s4510 Luna2. Billy 4

Everyday essentials
Everyday essentials — specifications for s4510 Luna, Billy 4.
Specifications4510 LunaBilly 4
Dimensions (HxWxD)
  • 136 Х 67.5 Х 10.2 mm
  • 122.5 Х 64.4 Х 9.9 mm
Weight
  • 142 g
  • 109 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 4.5" inch
  • 4" inch
Screen resolution
  • 480 x 800 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 4 GB
  • 512 MB RAM
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSD
  • up to 32 GB (dedicated slot)
  • microSD
  • up to 256 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 1650 mAh
  • Removable Li-Ion
  • 1300 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.4.2 (KitKat)
  • Microsoft Windows Phone 8.1
Chipset
  • Mediatek MT6572 (28 nm)
  • Qualcomm MSM8212 Snapdragon 200 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for s4510 Luna, Billy 4.
Specifications4510 LunaBilly 4
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 57.6 cm2
  • 45.5 cm2
Screen format
  • 5:3 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 62.8%
  • 57.7%
PPI /points per inch/
  • 207 PPI
  • 233 PPI
Camera and Video
Camera and Video — specifications for s4510 Luna, Billy 4.
Specifications4510 LunaBilly 4
Rear camera, main
  • 5 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 5 MP
  • 8 MP
  • AF
Functions Unknown
  • LED flash
Video
  • 720p@30fps
  • 720p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 1.3 MP
  • Single
Specifications
  • VGA
  • 1.3 MP
Performance
Performance — specifications for s4510 Luna, Billy 4.
Specifications4510 LunaBilly 4
Processor CPU
  • Dual-core 1.2 GHz Cortex-A7
  • Quad-core 1.2 GHz Cortex-A7
Graphics processor GPU
  • Mali-400
  • Adreno 302
General specs
General specs — specifications for s4510 Luna, Billy 4.
Specifications4510 LunaBilly 4
Release date
  • 2014
  • September
  • 2014
  • June
Colors
  • Black
  • Blue
  • Yellow
  • White
  • Black
  • Red
  • Gun Metal
  • Blue
  • Yellow
  • Champing Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 90 EUR
Unknown
Battery life
  • Stand by time- Up to 192 h (3G) Talking time- Up to 8 h (3G)
  • 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 s4510 Luna, Billy 4.
Specifications4510 LunaBilly 4
SIM card
  • Mini-SIM
  • Dual SIM (Micro-SIM)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Speed
  • HSPA 21.1/5.76 Mbps
  • HSPA 42.2/5.76 Mbps
GPRS
  • Yes
  • Class 12
Edge
  • Yes
  • Class 12
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • 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
  • 4.0
  • A2DP
Harmful irradiation
  • SAR - 0.91 W/kg (head) 0.84 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for s4510 Luna, Billy 4.
Specifications4510 LunaBilly 4
Radio
  • FM radio
  • Stereo FM radio
Other features
Other features — specifications for s4510 Luna, Billy 4.
Specifications4510 LunaBilly 4
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer
  • proximity