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BLU Studio X Plus vs Yezz Billy 4

Compare recorded specifications, size and practical differences.

Yezz Billy 4

Yezz Billy 4

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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.

  • WeightBilly 4: 61 g lighterBilly 4: 109 g · Studio X Plus: 170 g
  • WidthBilly 4: 12.2 mm narrowerBilly 4: 64.4 mm · Studio X Plus: 76.6 mm
  • Screen diagonalBilly 4: 1.5 in smaller diagonalBilly 4: 4 in · Studio X Plus: 5.5 in
  • DepthBilly 4: 0.7 mm thinnerBilly 4: 9.9 mm · Studio X Plus: 10.6 mm
  • HeightBilly 4: 33 mm shorterBilly 4: 122.5 mm · Studio X Plus: 155.5 mm
  • Release year2015 / 2014Studio X Plus: 2015 · Billy 4: 2014

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.

Front
Studio X Plus: 155.5 × 76.6 mm 1 Billy 4: 122.5 × 64.4 mm 2
Side
Studio X Plus: 155.5 × 10.6 mm 1 Billy 4: 122.5 × 9.9 mm 2
  1. 1. Studio X Plus
    Height
    155.5 mm+33 mm versus Billy 4
    Width
    76.6 mm+12.2 mm versus Billy 4
    Depth
    10.6 mm+0.7 mm versus Billy 4
    Weight
    170 g
  2. 2. Billy 4
    Height
    122.5 mm
    Width
    64.4 mm
    Depth
    9.9 mm
    Weight
    109 g
Weight

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

  1. 1. Studio X Plus170 g

    +61 g versus Billy 4

  2. 2. Billy 4109 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.

Screen size
Studio X Plus: 5.5 in, 16:9, About 83.4 cm² rectangular area 1 Billy 4: 4 in, 5:3, About 45.5 cm² rectangular area 2
  1. 1. Studio X Plus 5.5 in · 16:9 About 83.4 cm² rectangular area
  2. 2. Billy 4 4 in · 5:3 About 45.5 cm² rectangular area

Studio X Plus 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 by storage capacity and phone
StorageStudio X PlusBilly 4
8 GB 1 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. Studio X Plus

NFC
Unknown
Headphone jack
Yes
Memory card support
See details microSD · up to 64 GB

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 capacity

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

  1. 1. Studio X Plus2600 mAh

    +1300 mAh versus Billy 4

  2. 2. Billy 41300 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. Studio X Plus2. Billy 4

Everyday essentials
Everyday essentials
SpecificationStudio X PlusBilly 4
Dimensions (HxWxD)
  • 155.5 Х 76.6 Х 10.6 mm
  • 122.5 Х 64.4 Х 9.9 mm
Weight
  • 170 g
  • 109 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5.5" inch
  • 4" inch
Screen resolution
  • 720 x 1280 px
  • 480 x 800 px
Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 8 GB
  • 1 GB RAM
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSD
  • up to 64 GB
  • microSD
  • up to 256 GB
BatteryCapacity is not battery life. No endurance test is implied.
  • 2600 mAh
  • Removable Li-Ion
  • 1300 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.4.2 (KitKat)
  • upgradable to 5.0 (Lollipop)
  • Microsoft Windows Phone 8.1
Chipset Unknown
  • Qualcomm MSM8212 Snapdragon 200 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display
SpecificationStudio X PlusBilly 4
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 83.4 cm2
  • 45.5 cm2
Screen format
  • 16:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 70.0%
  • 57.7%
PPI /points per inch/
  • 267 PPI
  • 233 PPI
Camera and Video
Camera and Video
SpecificationStudio X PlusBilly 4
Rear camera, main
  • 8 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 8 MP
  • AF
  • 8 MP
  • AF
Functions
  • LED flash
  • LED flash
Video
  • 1080p@30fps
  • 720p@30fps
Front camera, selfie
  • 2 MP
  • Single
  • 1.3 MP
  • Single
Specifications
  • 2 MP
  • 1.3 MP
Performance
Performance
SpecificationStudio X PlusBilly 4
Processor CPU
  • Quad-core 1.3 GHz Cortex-A7
  • Quad-core 1.2 GHz Cortex-A7
Graphics processor GPU
  • Mali-400
  • Adreno 302
General specs
General specs
SpecificationStudio X PlusBilly 4
Release date
  • 2015
  • January
  • 2014
  • June
Colors
  • Black
  • White
  • Blue
  • Gold
  • Pink
  • White
  • Black
  • Red
  • Gun Metal
  • Blue
  • Yellow
  • Champing Gold
Battery life
  • Stand by time- Up to 800 h (2G) / Up to 775 h (3G) Talking time- Up to 28 h (2G) / Up to 16 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
SpecificationStudio X PlusBilly 4
SIM card
  • Dual SIM (Mini-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
  • 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
  • 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
  • 4.0
  • A2DP
Music and Audio
Music and Audio
SpecificationStudio X PlusBilly 4
Radio
  • Stereo FM radio
  • Stereo FM radio
Other features
Other features
SpecificationStudio X PlusBilly 4
Dop
  • Sensors Accelerometer
  • gyro
  • proximity
  • Sensors Accelerometer
  • proximity