Lava Z91 vs O2 XDA Atom

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

    XDA Atom: 7 g lighter

    Z91:
    147 g
    XDA Atom:
    140 g
  • Width

    XDA Atom: 14.9 mm narrower

    Z91:
    72.9 mm
    XDA Atom:
    58 mm
  • Screen diagonal

    XDA Atom: 3 in smaller diagonal

    Z91:
    5.7 in
    XDA Atom:
    2.7 in
  • Depth

    Z91: 10.8 mm thinner

    Z91:
    7.7 mm
    XDA Atom:
    18.5 mm
  • Height

    XDA Atom: 50 mm shorter

    Z91:
    152 mm
    XDA Atom:
    102 mm
  • Release year

    Z91:
    2018
    XDA Atom:
    2005

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 +50 mm versus XDA Atom
    Width:
    72.9 mm +14.9 mm versus XDA Atom
    Depth:
    7.7 mm
  2. 2. XDA Atom

    Height:
    102 mm
    Width:
    58 mm
    Depth:
    18.5 mm +10.8 mm versus Z91

Weight

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

  1. 1. Z91

    147 g

    +7 g versus XDA Atom

  2. 2. XDA Atom

    140 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. XDA Atom

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

Z91 has approximately 271.4% more rectangular screen area than XDA Atom.

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, XDA Atom, compared at the same storage capacity.
StorageZ91XDA Atom
32 GB 3 GB RAM Unknown
XDA Atom: Original memory entry

64 MB RAM · 128 MB ROM

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. XDA Atom

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details miniSD

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

    +1470 mAh versus XDA Atom

  2. 2. XDA Atom

    1530 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. XDA Atom

Everyday essentials
Everyday essentials — specifications for Z91, XDA Atom.
SpecificationZ91XDA Atom
Dimensions (HxWxD)
  • 152 Х 72.9 Х 7.7 mm
  • 102 Х 58 Х 18.5 mm
Weight
  • 147 g
  • 140 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5.7" inch
  • 2.7" inch
Screen resolution
  • 720 x 1440 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32 GB
  • 3 GB RAM
  • 64 MB RAM
  • 128 MB ROM
Memory card support
  • microSD
  • up to 128 GB (dedicated slot)
  • miniSD
Battery Capacity is not battery life. No endurance test is implied.
  • 3000 mAh
  • Non-removable Li-Po
  • 1530 mAh
  • Removable Li-Po
Operating system OS
  • Android 7.1 (Nougat)
  • Microsoft Windows Mobile 5.0 PocketPC
Chipset
  • Mediatek MT6739 (28 nm)
Unknown
Headphone jack
  • Yes
  • No
Display
Display — specifications for Z91, XDA Atom.
SpecificationZ91XDA Atom
Touchscreen
  • capacitive touchscreen
  • resistive touchscreen
Display colors
  • 16M
Unknown
Screen area
  • 83.8 cm2
  • 22.6 cm2
Screen format
  • 18:9 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 75.7%
  • 38.2%
PPI /points per inch/
  • 282 PPI
  • 148 PPI
Camera and Video
Camera and Video — specifications for Z91, XDA Atom.
SpecificationZ91XDA Atom
Rear camera, main
  • 13 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 13 MP
  • f/2.0
  • 1.12µm
  • AF
  • 2 MP
Functions
  • LED flash
  • LED flash
Video
  • 1080p@30fps
  • Yes
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, XDA Atom.
SpecificationZ91XDA Atom
Processor CPU
  • Quad-core 1.3 GHz Cortex-A53
  • Intel PXA272 416 MHz
Graphics processor GPU
  • PowerVR GE8100
Unknown
Antutu 7 score *
  • 35722
Unknown
General specs
General specs — specifications for Z91, XDA Atom.
SpecificationZ91XDA Atom
Release date
  • 2018
  • March
  • 2005
  • November
Colors
  • Blue
  • Silver
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 10000 INR
  • 260 EUR
Battery life Unknown
  • Stand by time- Up to 150 h Talking time- Up to 5 h 30 min
Communication and Connectivity
Communication and Connectivity — specifications for Z91, XDA Atom.
SpecificationZ91XDA Atom
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 802.11b
GPS
  • Yes
  • with A-GPS
  • No
USB
  • microUSB 2.0
  • USB On-The-Go
  • miniUSB
Bluetooth
  • 4.0
  • A2DP
  • 1.2
Music and Audio
Music and Audio — specifications for Z91, XDA Atom.
SpecificationZ91XDA Atom
Radio
  • FM radio
  • FM radio
Others Unknown
  • Handwriting recognition
Other features
Other features — specifications for Z91, XDA Atom.
SpecificationZ91XDA Atom
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity - For India
  • Infrared port - Pocket Office -MP3/AAC/AAC+/WMA/OGG/AMR player -WMV/MP4 player - Produced by Quanta Computer. Functionally identical to HP iPAQ rw6815