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Lava X81 vs Plum Sync 4.0b

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

    Sync 4.0b: 73.2 g lighter

    X81:
    158 g
    Sync 4.0b:
    84.8 g
  • Width

    Sync 4.0b: 8.3 mm narrower

    X81:
    71.8 mm
    Sync 4.0b:
    63.5 mm
  • Screen diagonal

    Sync 4.0b: 1.5 in smaller diagonal

    X81:
    5.5 in
    Sync 4.0b:
    4 in
  • Depth

    X81: 1.5 mm thinner

    X81:
    8.9 mm
    Sync 4.0b:
    10.4 mm
  • Height

    Sync 4.0b: 30.5 mm shorter

    X81:
    155 mm
    Sync 4.0b:
    124.5 mm
  • Release year

    X81:
    2016
    Sync 4.0b:
    2015

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. X81

    Height:
    155 mm +30.5 mm versus Sync 4.0b
    Width:
    71.8 mm +8.3 mm versus Sync 4.0b
    Depth:
    8.9 mm
  2. 2. Sync 4.0b

    Height:
    124.5 mm
    Width:
    63.5 mm
    Depth:
    10.4 mm +1.5 mm versus X81

Weight

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

  1. 1. X81

    158 g

    +73.2 g versus Sync 4.0b

  2. 2. Sync 4.0b

    84.8 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. X81

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    83.4 cm²
  2. 2. Sync 4.0b

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

X81 has approximately 83.1% more rectangular screen area than Sync 4.0b.

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 X81, Sync 4.0b, compared at the same storage capacity.
StorageX81Sync 4.0b
32 GB 2 GB RAM Unknown
Sync 4.0b: Original memory entry

512 MB · 256 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. X81

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

2. Sync 4.0b

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 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. X81

    2800 mAh

    +1500 mAh versus Sync 4.0b

  2. 2. Sync 4.0b

    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. X812. Sync 4.0b

Everyday essentials
Everyday essentials — specifications for X81, Sync 4.0b.
SpecificationX81Sync 4.0b
Dimensions (HxWxD)
  • 155 Х 71.8 Х 8.9 mm
  • 124.5 Х 63.5 Х 10.4 mm
Weight
  • 158 g
  • 84.8 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5.5" inch
  • 4" inch
Screen resolution
  • 720 x 1280 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32 GB
  • 2 GB RAM
  • 512 MB
  • 256 MB RAM
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 2800 mAh
  • Removable Li-Po
  • 1300 mAh
  • Removable Li-Ion
Operating system OS
  • Android 5.1 (Lollipop)
  • upgradable to 6.0 (Marshmallow)
  • Android 4.4 (KitKat)
Chipset Unknown
  • Mediatek MT6572 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for X81, Sync 4.0b.
SpecificationX81Sync 4.0b
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
  • 74.9%
  • 57.6%
PPI /points per inch/
  • 267 PPI
  • 233 PPI
Camera and Video
Camera and Video — specifications for X81, Sync 4.0b.
SpecificationX81Sync 4.0b
Rear camera, main
  • 8 MP
  • Single
  • 1.3 MP
  • Single
Camera specs
  • 8 MP
  • AF
  • 1.3 MP
Functions
  • LED flash
Unknown
Video
  • 1080p@30fps
  • 720p@30fps
Front camera, selfie
  • 5 MP
  • Single
  • 1.3 MP
  • Single
Specifications
  • 5 MP
  • 1.3 MP
Performance

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

Performance — specifications for X81, Sync 4.0b.
SpecificationX81Sync 4.0b
Processor CPU
  • Quad-core
  • Dual-core 1.0 GHz Cortex-A7
Graphics processor GPU Unknown
  • Mali-400
Antutu 7 score *
  • 29391
Unknown
General specs
General specs — specifications for X81, Sync 4.0b.
SpecificationX81Sync 4.0b
Release date
  • 2016
  • November
  • 2015
  • June
Colors
  • Blue
  • Black
  • White
  • Red
  • Blue
Battery life Unknown
  • Stand by time- Up to 180 h Talking time- Up to 2 h 30 min
Communication and Connectivity
Communication and Connectivity — specifications for X81, Sync 4.0b.
SpecificationX81Sync 4.0b
SIM card
  • Dual SIM (Micro-SIM
  • dual stand-by)
  • Dual SIM
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2 -3G - HSDPA 900 / 2100 -4G - LTE band 3(1800)
  • 40(2300)
Unknown
Speed
  • HSPA
  • LTE Cat4 150/50 Mbps
Unknown
GPRS
  • Yes
  • Class 12
Edge
  • Yes
  • Class 12
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • hotspot
  • No
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 4.0
  • A2DP
  • 2.0
Music and Audio
Music and Audio — specifications for X81, Sync 4.0b.
SpecificationX81Sync 4.0b
Radio
  • FM radio
  • FM radio
Other features
Other features — specifications for X81, Sync 4.0b.
SpecificationX81Sync 4.0b
Dop
  • Sensors Accelerometer
  • proximity - For India
  • Sensors Accelerometer Flashlight Also known as Plum Sync 4.0b X400