Lava Z91 vs Xiaomi Poco X2

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

    Z91: 61 g lighter

    Z91:
    147 g
    Poco X2:
    208 g
  • Width

    Z91: 3.7 mm narrower

    Z91:
    72.9 mm
    Poco X2:
    76.6 mm
  • Screen diagonal

    Z91: 0.97 in smaller diagonal

    Z91:
    5.7 in
    Poco X2:
    6.67 in
  • Chipset

    Z91:
    Mediatek MT6739 (28 nm)
    Poco X2:
    Qualcomm SDM730 Snapdragon 730G (8 nm)
  • Rear camera layout

    Z91:
    Single
    Poco X2:
    Quad
  • Depth

    Z91: 1.1 mm thinner

    Z91:
    7.7 mm
    Poco X2:
    8.8 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. Z91

    Height:
    152 mm
    Width:
    72.9 mm
    Depth:
    7.7 mm
  2. 2. Poco X2

    Height:
    165.3 mm +13.3 mm versus Z91
    Width:
    76.6 mm +3.7 mm versus Z91
    Depth:
    8.8 mm +1.1 mm versus Z91

Weight

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

  1. 1. Z91

    147 g

  2. 2. Poco X2

    208 g

    +61 g versus Z91

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. Poco X2

    Screen diagonal:
    6.67 in
    Aspect ratio (height:width):
    20:9
    Approximate rectangular screen area:
    107.4 cm²

Poco X2 has approximately 28.1% more rectangular screen area than Z91.

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, Poco X2, compared at the same storage capacity.
StorageZ91Poco X2
32 GB 3 GB RAM Not recorded
64 GB Not recorded 6 GB RAM
128 GB Not recorded 6 GB RAM
256 GB Not recorded 8 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. Z91

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

2. Poco X2

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSDXC (uses shared SIM slot)

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

  2. 2. Poco X2

    4500 mAh

    +1500 mAh versus Z91

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. Poco X2

Everyday essentials
Everyday essentials — specifications for Z91, Poco X2.
SpecificationZ91Poco X2
Dimensions (HxWxD)
  • 152 Х 72.9 Х 7.7 mm
  • 165.3 Х 76.6 Х 8.8 mm
Weight
  • 147 g
  • 208 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5.7" inch
  • 6.67" inch
Screen resolution
  • 720 x 1440 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32 GB
  • 3 GB RAM
  • 64GB 6GB RAM
  • 128GB 6GB RAM
  • 256GB 8GB RAM
Memory card support
  • microSD
  • up to 128 GB (dedicated slot)
  • microSDXC (uses shared SIM slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3000 mAh
  • Non-removable Li-Po
  • 4500 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 7.1 (Nougat)
  • Android 10.0; MIUI 11
Chipset
  • Mediatek MT6739 (28 nm)
  • Qualcomm SDM730 Snapdragon 730G (8 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Z91, Poco X2.
SpecificationZ91Poco X2
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 83.8 cm2
  • 107.4 cm2
Screen format
  • 18:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 75.7%
  • 84.8%
PPI /points per inch/
  • 282 PPI
  • 395 PPI
Screen protection Unknown
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for Z91, Poco X2.
SpecificationZ91Poco X2
Rear camera, main
  • 13 MP
  • Single
  • 64 MP
  • Quad
Camera specs
  • 13 MP
  • f/2.0
  • 1.12µm
  • AF
  • 64 MP
  • f/1.9
  • 26mm (wide)
  • 1/1.72''
  • 0.8µm
  • PDAF -8 MP
  • f/2.2
  • 13mm (ultrawide)
  • 1/4.0''
  • 1.12µm -2 MP
  • f/2.4
  • 1/5.0''
  • 1.75µm (dedicated macro camera) -2 MP
  • 1.75µm
  • depth sensor
Functions
  • LED flash
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 20 MP
  • Dual
Specifications
  • 8 MP
  • f/2.2
  • 20 MP
  • f/2.2
  • 27mm (wide)
  • 1/3.4''
  • 0.8µm 2 MP
  • f/2.4
  • 1/5''
  • 1.75µm
  • depth sensor
Performance

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

Performance — specifications for Z91, Poco X2.
SpecificationZ91Poco X2
Processor CPU
  • Quad-core 1.3 GHz Cortex-A53
  • Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
Graphics processor GPU
  • PowerVR GE8100
  • Adreno 618
Antutu 7 score *
  • 35722
Unknown
Antutu 8 score * Unknown
  • 279215
GeekBench 5 Single Core * Unknown
  • 489
GeekBench 5 Multi-Core * Unknown
  • 1576
General specs
General specs — specifications for Z91, Poco X2.
SpecificationZ91Poco X2
Release date
  • 2018
  • March
  • 2020
  • February
Colors
  • Blue
  • Atlantis Blue
  • Matrix Purple
  • Phoenix Red
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 10000 INR
  • 200 EUR
Body build Unknown
  • Glass front (Gorilla Glass 5)
  • glass back (Gorilla Glass 5)
  • aluminum frame
Communication and Connectivity
Communication and Connectivity — specifications for Z91, Poco X2.
SpecificationZ91Poco X2
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Hybrid Dual SIM (Nano-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)
  • 40(2300)
  • 41(2500)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 8(900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • WiFi Direct
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • USB On-The-Go
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 4.0
  • A2DP
  • 5.0
  • A2DP
  • LE
Harmful irradiation Unknown
  • SAR - 1.08 W/kg (head) 0.62 W/kg (body)
Music and Audio
Music and Audio — specifications for Z91, Poco X2.
SpecificationZ91Poco X2
Radio
  • FM radio
  • FM radio
  • recording
Others Unknown
  • HDR10 -120Hz refresh rate -500 nits typ. brightness
  • 24-bit/192kHz audio
Other features
Other features — specifications for Z91, Poco X2.
SpecificationZ91Poco X2
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity - For India
  • Sensors Fingerprint (side-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Infrared port - Fast battery charging 27W (100% in 68 min) - Splash resistant - Also known as Xiaomi POCO X2 Special Edition