Lava Z91 vs Micromax W900

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

    W900: 34 g lighter

    Z91:
    147 g
    W900:
    113 g
  • Width

    W900: 17.9 mm narrower

    Z91:
    72.9 mm
    W900:
    55 mm
  • Screen diagonal

    W900: 2.5 in smaller diagonal

    Z91:
    5.7 in
    W900:
    3.2 in
  • Depth

    Z91: 6.5 mm thinner

    Z91:
    7.7 mm
    W900:
    14.2 mm
  • Height

    W900: 40 mm shorter

    Z91:
    152 mm
    W900:
    112 mm
  • Release year

    Z91:
    2018
    W900:
    2010

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. Z91

    Height:
    152 mm +40 mm versus W900
    Width:
    72.9 mm +17.9 mm versus W900
    Depth:
    7.7 mm
  2. 2. W900

    Height:
    112 mm
    Width:
    55 mm
    Depth:
    14.2 mm +6.5 mm versus Z91

Weight

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

  1. 1. Z91

    147 g

    +34 g versus W900

  2. 2. W900

    113 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. Z91

    Screen diagonal:
    5.7 in
    Aspect ratio (height:width):
    18:9
    Approximate rectangular screen area:
    83.8 cm²
  2. 2. W900

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

Z91 has approximately 187.7% more rectangular screen area than W900.

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 Z91, W900, compared at the same storage capacity.
StorageZ91W900
32 GB 3 GB RAM Unknown
W900: Original memory entry

256 MB ROM · 128 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. Z91

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

2. W900

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 16 GB (dedicated slot) · 2 GB included

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. Z91

    3000 mAh

    +1500 mAh versus W900

  2. 2. W900

    1500 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. Z912. W900

Everyday essentials
Everyday essentials — specifications for Z91, W900.
SpecificationZ91W900
Dimensions (HxWxD)
  • 152 Х 72.9 Х 7.7 mm
  • 112 Х 55 Х 14.2 mm
Weight
  • 147 g
  • 113 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5.7" inch
  • 3.2" inch
Screen resolution
  • 720 x 1440 px
  • 240 x 400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32 GB
  • 3 GB RAM
  • 256 MB ROM
  • 128 MB RAM
Memory card support
  • microSD
  • up to 128 GB (dedicated slot)
  • microSD
  • up to 16 GB (dedicated slot)
  • 2 GB included
Battery Capacity is not battery life. No endurance test is implied.
  • 3000 mAh
  • Non-removable Li-Po
  • 1500 mAh
  • Removable Li-Ion
Operating system OS
  • Android 7.1 (Nougat)
  • Microsoft Windows Mobile 6.1 Professional
Chipset
  • Mediatek MT6739 (28 nm)
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Z91, W900.
SpecificationZ91W900
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors
  • 16M
  • 256K
Screen area
  • 83.8 cm2
  • 29.1 cm2
Screen format
  • 18:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 75.7%
  • 47.3%
PPI /points per inch/
  • 282 PPI
  • 146 PPI
Camera and Video
Camera and Video — specifications for Z91, W900.
SpecificationZ91W900
Rear camera, main
  • 13 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 13 MP
  • f/2.0
  • 1.12µm
  • AF
  • 2 MP
Functions
  • LED flash
Unknown
Video
  • 1080p@30fps
  • No
Front camera, selfie
  • 8 MP
  • Single
  • 0 MP,
Specifications
  • 8 MP
  • f/2.2
Unknown
Performance

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

Performance — specifications for Z91, W900.
SpecificationZ91W900
Processor CPU
  • Quad-core 1.3 GHz Cortex-A53
  • K3 Hi3611 460MHz
Graphics processor GPU
  • PowerVR GE8100
Unknown
Antutu 7 score *
  • 35722
Unknown
General specs
General specs — specifications for Z91, W900.
SpecificationZ91W900
Release date
  • 2018
  • March
  • 2010
  • February
Colors
  • Blue
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 10000 INR
  • 60 EUR
Battery life Unknown
  • Stand by time- Up to 480 h Talking time- Up to 5 h
Communication and Connectivity
Communication and Connectivity — specifications for Z91, W900.
SpecificationZ91W900
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Mini-SIM
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)
  • 40(2300)
  • 41(2500)
Unknown
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
Unknown
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
  • Wi-Fi 802.11 b/g
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • USB On-The-Go
  • Proprietary
Bluetooth
  • 4.0
  • A2DP
  • Yes
Music and Audio
Music and Audio — specifications for Z91, W900.
SpecificationZ91W900
Radio
  • FM radio
  • No
Other features
Other features — specifications for Z91, W900.
SpecificationZ91W900
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity - For India
  • Sensors Accelerometer Organizer -Document viewer -MP3/AAC+/WAV/WMA player -MP4/H.264/WMV player -Voice memo -Predictive text input