Gigabyte GSmart Alto A2 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.

  • Screen diagonal

    Billy 4: 1 in smaller diagonal

    GSmart Alto A2:
    5 in
    Billy 4:
    4 in
  • Chipset

    GSmart Alto A2:
    Mediatek MT6572 (28 nm)
    Billy 4:
    Qualcomm MSM8212 Snapdragon 200 (28 nm)
  • Release year

    GSmart Alto A2:
    2013
    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.

  1. 1. GSmart Alto A2

    Height:
    Unknown
    Width:
    Unknown
    Depth:
    Unknown
    Weight:
    Unknown

    Unavailable dimensions are omitted from the drawing.

  2. 2. Billy 4

    Height:
    122.5 mm
    Width:
    64.4 mm
    Depth:
    9.9 mm
    Weight:
    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. GSmart Alto A2

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

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

GSmart Alto A2 has approximately 51.3% 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 GSmart Alto A2, Billy 4, compared at the same storage capacity.
StorageGSmart Alto A2Billy 4
4 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. GSmart Alto A2

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. GSmart Alto A2

    2000 mAh

    +700 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. GSmart Alto A22. Billy 4

Everyday essentials
Everyday essentials — specifications for GSmart Alto A2, Billy 4.
SpecificationGSmart Alto A2Billy 4
Dimensions (HxWxD)
  • Х Х mm
  • 122.5 Х 64.4 Х 9.9 mm
Weight
  • 0 g
  • 109 g
Technology
  • TFT
  • TFT
Screen size
  • 5" inch
  • 4" inch
Screen resolution
  • 480 x 854 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
  • 1 GB 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.
  • 2000 mAh
  • Removable Li-Ion
  • 1300 mAh
  • Removable Li-Ion
Operating system OS
  • Android 4.2 (Jelly Bean)
  • Microsoft Windows Phone 8.1
Chipset
  • Mediatek MT6572 (28 nm)
  • Qualcomm MSM8212 Snapdragon 200 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for GSmart Alto A2, Billy 4.
SpecificationGSmart Alto A2Billy 4
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 68.9 cm2
  • 45.5 cm2
Screen format
  • 16:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio Unknown
  • 57.7%
PPI /points per inch/
  • 196 PPI
  • 233 PPI
Camera and Video
Camera and Video — specifications for GSmart Alto A2, Billy 4.
SpecificationGSmart Alto A2Billy 4
Rear camera, main
  • 5 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 5 MP
  • 8 MP
  • AF
Functions
  • LED flash
  • LED flash
Video
  • Yes
  • 720p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 1.3 MP
  • Single
Specifications
  • VGA
  • 1.3 MP
Performance

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

Performance — specifications for GSmart Alto A2, Billy 4.
SpecificationGSmart Alto A2Billy 4
Processor CPU
  • Dual-core 1.3 GHz Cortex-A7
  • Quad-core 1.2 GHz Cortex-A7
Graphics processor GPU
  • Mali-400
  • Adreno 302
Antutu 7 score *
  • 14232
Unknown
General specs
General specs — specifications for GSmart Alto A2, Billy 4.
SpecificationGSmart Alto A2Billy 4
Release date
  • 2013
  • October
  • 2014
  • June
Colors
  • Black
  • White
  • White
  • Black
  • Red
  • Gun Metal
  • Blue
  • Yellow
  • Champing Gold
Battery life
  • Stand by time- Up to 150 h Talking time- Up to 3 h 30 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 GSmart Alto A2, Billy 4.
SpecificationGSmart Alto A2Billy 4
SIM card
  • Dual SIM
  • 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
  • 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
  • 3.0
  • 4.0
  • A2DP
Music and Audio
Music and Audio — specifications for GSmart Alto A2, Billy 4.
SpecificationGSmart Alto A2Billy 4
Radio
  • FM radio
  • Stereo FM radio
Other features
Other features — specifications for GSmart Alto A2, Billy 4.
SpecificationGSmart Alto A2Billy 4
Dop
  • Sensors Accelerometer
  • proximity
  • Sensors Accelerometer
  • proximity