alcatel OT-891 Soul 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.

  • Weight

    OT-891 Soul: 9 g lighter

    OT-891 Soul:
    100 g
    Billy 4:
    109 g
  • Width

    OT-891 Soul: 6.4 mm narrower

    OT-891 Soul:
    58 mm
    Billy 4:
    64.4 mm
  • Screen diagonal

    OT-891 Soul: 1.2 in smaller diagonal

    OT-891 Soul:
    2.8 in
    Billy 4:
    4 in
  • Chipset

    OT-891 Soul:
    Mediatek MT6516
    Billy 4:
    Qualcomm MSM8212 Snapdragon 200 (28 nm)
  • Depth

    Billy 4: 2.7 mm thinner

    OT-891 Soul:
    12.6 mm
    Billy 4:
    9.9 mm
  • Height

    OT-891 Soul: 17.5 mm shorter

    OT-891 Soul:
    105 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. OT-891 Soul

    Height:
    105 mm
    Width:
    58 mm
    Depth:
    12.6 mm +2.7 mm versus Billy 4
  2. 2. Billy 4

    Height:
    122.5 mm +17.5 mm versus OT-891 Soul
    Width:
    64.4 mm +6.4 mm versus OT-891 Soul
    Depth:
    9.9 mm

Weight

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

  1. 1. OT-891 Soul

    100 g

  2. 2. Billy 4

    109 g

    +9 g versus OT-891 Soul

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. OT-891 Soul

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

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

Billy 4 has approximately 87.6% more rectangular screen area than OT-891 Soul.

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.

OT-891 Soul: Original memory entry

150 MB

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. OT-891 Soul

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 16 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. OT-891 Soul

    1000 mAh

  2. 2. Billy 4

    1300 mAh

    +300 mAh versus OT-891 Soul

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. OT-891 Soul2. Billy 4

Everyday essentials
Everyday essentials — specifications for OT-891 Soul, Billy 4.
SpecificationOT-891 SoulBilly 4
Dimensions (HxWxD)
  • 105 Х 58 Х 12.6 mm
  • 122.5 Х 64.4 Х 9.9 mm
Weight
  • 100 g
  • 109 g
Technology
  • TFT
  • TFT
Screen size
  • 2.8" inch
  • 4" inch
Screen resolution
  • 320 x 240 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 150 MB
  • 4 GB
  • 512 MB RAM
Memory card support
  • microSD
  • up to 16 GB (dedicated slot)
  • microSD
  • up to 256 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 1000 mAh
  • Removable Li-Ion
  • 1300 mAh
  • Removable Li-Ion
Operating system OS
  • Android 2.1 (Eclair)
  • Microsoft Windows Phone 8.1
Chipset
  • Mediatek MT6516
  • Qualcomm MSM8212 Snapdragon 200 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for OT-891 Soul, Billy 4.
SpecificationOT-891 SoulBilly 4
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 256K
  • 16M
Screen area
  • 24.3 cm2
  • 45.5 cm2
Screen format
  • 4:3 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 39.9%
  • 57.7%
PPI /points per inch/
  • 143 PPI
  • 233 PPI
Camera and Video
Camera and Video — specifications for OT-891 Soul, Billy 4.
SpecificationOT-891 SoulBilly 4
Rear camera, main
  • 2 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 2 MP
  • 8 MP
  • AF
Functions Unknown
  • LED flash
Video
  • Yes
  • 720p@30fps
Front camera, selfie
  • 0 MP,
  • 1.3 MP
  • Single
Specifications Unknown
  • 1.3 MP
Performance
Performance — specifications for OT-891 Soul, Billy 4.
SpecificationOT-891 SoulBilly 4
Processor CPU
  • 420 MHz
  • Quad-core 1.2 GHz Cortex-A7
Graphics processor GPU Unknown
  • Adreno 302
General specs
General specs — specifications for OT-891 Soul, Billy 4.
SpecificationOT-891 SoulBilly 4
Release date
  • 2011
  • February
  • 2014
  • June
Colors
  • Black
  • White
  • Black
  • Red
  • Gun Metal
  • Blue
  • Yellow
  • Champing Gold
Battery life
  • Stand by time- Up to 200 h Talking time- Up to 4 h
  • 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 OT-891 Soul, Billy 4.
SpecificationOT-891 SoulBilly 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
  • HSPA 42.2/5.76 Mbps
GPRS
  • Class 12
  • Class 12
Edge
  • Class 12
  • Class 12
Wi-Fi
  • Wi-Fi 802.11 b/g
  • 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
  • 2.1
  • A2DP
  • 4.0
  • A2DP
Harmful irradiation
  • SAR - 1.04 W/kg (head) 1.20 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for OT-891 Soul, Billy 4.
SpecificationOT-891 SoulBilly 4
Radio
  • Stereo FM radio
  • RDS
  • Stereo FM radio
Other features
Other features — specifications for OT-891 Soul, Billy 4.
SpecificationOT-891 SoulBilly 4
Dop
  • Sensors Accelerometer
  • compass - MP3/AAC+/WAV/WMA player -MP4/H.264 player -Organizer -Document viewer -Voice memo -Predictive text input
  • Sensors Accelerometer
  • proximity