Lava Z81 vs Maxwest Astro X55

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

    Z81: 33 g lighter

    Z81:
    141 g
    Astro X55:
    174 g
  • Width

    Z81: 3.3 mm narrower

    Z81:
    73 mm
    Astro X55:
    76.3 mm
  • Screen diagonal

    Astro X55: 0.2 in smaller diagonal

    Z81:
    5.7 in
    Astro X55:
    5.5 in
  • Chipset

    Z81:
    Mediatek MT6761 Helio A22 (12 nm)
    Astro X55:
    Mediatek MT6580 (28 nm)
  • Release year

    Z81:
    2018
    Astro X55:
    2016

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. Z81

    Height:
    152.2 mm
    Width:
    73 mm
    Depth:
    7.9 mm
  2. 2. Astro X55

    Height:
    150.5 mm
    Width:
    76.3 mm +3.3 mm versus Z81
    Depth:
    7.8 mm

Weight

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

  1. 1. Z81

    141 g

  2. 2. Astro X55

    174 g

    +33 g versus Z81

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. Z81

    Screen diagonal:
    5.7 in
    Aspect ratio (height:width):
    18:9
    Approximate rectangular screen area:
    83.8 cm²
  2. 2. Astro X55

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    83.4 cm²

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 Z81, Astro X55, compared at the same storage capacity.
StorageZ81Astro X55
8 GB Unknown 1 GB RAM
Z81: Original memory entry

32 GB · 3 GB RAM 16 GB · 2 GB 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. Z81

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 128 GB (dedicated slot)

2. Astro X55

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. Z81

    3000 mAh

    +800 mAh versus Astro X55

  2. 2. Astro X55

    2200 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. Z812. Astro X55

Everyday essentials
Everyday essentials — specifications for Z81, Astro X55.
SpecificationZ81Astro X55
Dimensions (HxWxD)
  • 152.2 Х 73 Х 7.9 mm
  • 150.5 Х 76.3 Х 7.8 mm
Weight
  • 141 g
  • 174 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5.7" inch
  • 5.5" inch
Screen resolution
  • 720 x 1440 px
  • 720 x 1280 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32 GB
  • 3 GB RAM 16 GB
  • 2 GB RAM
  • 8 GB
  • 1 GB RAM
Memory card support
  • microSD
  • up to 128 GB (dedicated slot)
  • microSD
  • up to 32 GB
Battery Capacity is not battery life. No endurance test is implied.
  • 3000 mAh
  • Non-removable Li-Po
  • 2200 mAh
  • Removable Li-Ion
Operating system OS
  • Android 8.1 (Oreo)
  • Android 5.1 (Lollipop)
Chipset
  • Mediatek MT6761 Helio A22 (12 nm)
  • Mediatek MT6580 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Z81, Astro X55.
SpecificationZ81Astro X55
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 83.8 cm2
  • 83.4 cm2
Screen format
  • 18:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 75.5%
  • 72.6%
PPI /points per inch/
  • 282 PPI
  • 267 PPI
Screen protection
  • Corning Gorilla Glass 3
Unknown
Camera and Video
Camera and Video — specifications for Z81, Astro X55.
SpecificationZ81Astro X55
Rear camera, main
  • 13 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 13 MP
  • f/2.2
  • 8 MP
  • AF
Functions
  • LED flash
  • LED flash
Video
  • 1080p@30fps
  • 720p
Front camera, selfie
  • 13 MP
  • Single
  • 5 MP
  • Single
Specifications
  • 13 MP
  • f/2.0
  • 5 MP
Performance

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

Performance — specifications for Z81, Astro X55.
SpecificationZ81Astro X55
Processor CPU
  • Quad-core 2.0 GHz Cortex-A53
  • Quad-core 1.5 GHz Cortex-A7
Graphics processor GPU
  • PowerVR GE8320
  • Mali-400MP2
Antutu 7 score *
  • 55328
Unknown
General specs
General specs — specifications for Z81, Astro X55.
SpecificationZ81Astro X55
Release date
  • 2018
  • October
  • 2016
  • January
Colors
  • black/blue
  • Gold/Black
  • Gold/White
Battery life Unknown
  • Stand by time- Up to 350 h Talking time- Up to 14 h
Communication and Connectivity
Communication and Connectivity — specifications for Z81, Astro X55.
SpecificationZ81Astro X55
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM (dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2 -3G - HSDPA 900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 40(2300)
  • 41(2500)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA 21.1/5.76 Mbps
GPRS
  • Yes
  • Class 12
Edge
  • Yes
  • Class 12
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • WiFi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
Bluetooth
  • 4.2
  • A2DP
  • LE
  • 4.0
  • A2DP
Music and Audio
Music and Audio — specifications for Z81, Astro X55.
SpecificationZ81Astro X55
Radio
  • FM radio
  • Stereo FM radio
Other features
Other features — specifications for Z81, Astro X55.
SpecificationZ81Astro X55
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity - For India
  • Sensors Accelerometer
  • proximity