Lava Z91 vs Nokia X6 (2018)

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.

  • Width

    X6 (2018): 1.9 mm narrower

    Z91:
    72.9 mm
    X6 (2018):
    71 mm
  • Chipset

    Z91:
    Mediatek MT6739 (28 nm)
    X6 (2018):
    Qualcomm SDM636 Snapdragon 636 (14 nm)
  • Rear camera layout

    Z91:
    Single
    X6 (2018):
    Dual
  • Height

    X6 (2018): 4.8 mm shorter

    Z91:
    152 mm
    X6 (2018):
    147.2 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 +4.8 mm versus X6 (2018)
    Width:
    72.9 mm +1.9 mm versus X6 (2018)
    Depth:
    7.7 mm
  2. 2. X6 (2018)

    Height:
    147.2 mm
    Width:
    71 mm
    Depth:
    8 mm

Weight

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

  1. 1. Z91

    147 g

  2. 2. X6 (2018)

    151 g

    +4 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. X6 (2018)

    Screen diagonal:
    5.8 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    84 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 Z91, X6 (2018), compared at the same storage capacity.
StorageZ91X6 (2018)
32 GB 3 GB RAM Unknown
X6 (2018): Original memory entry

64 GB · 4 GB RAM (6.1 Plus)64 GB · 4/6 GB RAM 32 GB · 4 GB RAM (X6)

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. X6 (2018)

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 400 GB (uses SIM 2 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. X6 (2018)

    3060 mAh

    +60 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. X6 (2018)

Everyday essentials
Everyday essentials — specifications for Z91, X6 (2018).
SpecificationZ91X6 (2018)
Dimensions (HxWxD)
  • 152 Х 72.9 Х 7.7 mm
  • 147.2 Х 71 Х 8 mm
Weight
  • 147 g
  • 151 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5.7" inch
  • 5.8" inch
Screen resolution
  • 720 x 1440 px
  • 1080 x 2280 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 GB
  • 4 GB RAM (6.1 Plus)64 GB
  • 4/6 GB RAM 32 GB
  • 4 GB RAM (X6)
Memory card support
  • microSD
  • up to 128 GB (dedicated slot)
  • microSD
  • up to 400 GB (uses SIM 2 slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3000 mAh
  • Non-removable Li-Po
  • 3060 mAh
  • Non-removable Li-Ion
Operating system OS
  • Android 7.1 (Nougat)
  • Android 8.1 (Oreo)
  • upgradable to Android 9.0 (Pie); Android One
Chipset
  • Mediatek MT6739 (28 nm)
  • Qualcomm SDM636 Snapdragon 636 (14 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Z91, X6 (2018).
SpecificationZ91X6 (2018)
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 83.8 cm2
  • 85.1 cm2
Screen format
  • 18:9 (height:width)
  • 19:9 (height:width)
Screen to body ratio
  • 75.7%
  • 81.5%
PPI /points per inch/
  • 282 PPI
  • 432 PPI
Screen protection Unknown
  • Corning Gorilla Glass 3
Camera and Video
Camera and Video — specifications for Z91, X6 (2018).
SpecificationZ91X6 (2018)
Rear camera, main
  • 13 MP
  • Single
  • 16 MP
  • Dual
Camera specs
  • 13 MP
  • f/2.0
  • 1.12µm
  • AF
  • 16 MP
  • f/2.0
  • 1.0µm
  • PDAF -5 MP
  • f/2.4
  • 1.12µm
  • depth sensor
Functions
  • LED flash
  • Dual-LED dual-tone flash
  • panorama
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 8 MP
  • f/2.2
  • 16 MP
  • f/2.0
  • 1/3.1''
  • 1.0µm
Performance

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

Performance — specifications for Z91, X6 (2018).
SpecificationZ91X6 (2018)
Processor CPU
  • Quad-core 1.3 GHz Cortex-A53
  • Octa-core 1.8 GHz Kryo 260
Graphics processor GPU
  • PowerVR GE8100
  • Adreno 509
Antutu 7 score *
  • 35722
Unknown
General specs
General specs — specifications for Z91, X6 (2018).
SpecificationZ91X6 (2018)
Release date
  • 2018
  • March
  • 2018
  • July
Colors
  • Blue
  • Black
  • Blue
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 10000 INR
  • 250 EUR
Body build Unknown
  • Front/back glass (Gorilla Glass 3)
  • aluminum frame
Communication and Connectivity
Communication and Connectivity — specifications for Z91, X6 (2018).
SpecificationZ91X6 (2018)
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 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
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
  • WiFi 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 EU - 0.94 W/kg (head) 1.82 W/kg (body)
Music and Audio
Music and Audio — specifications for Z91, X6 (2018).
SpecificationZ91X6 (2018)
Radio
  • FM radio
  • FM radio
Others Unknown
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Z91, X6 (2018).
SpecificationZ91X6 (2018)
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity - For India
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging (Quick Charge 3.0) - Versions: Nokia 6.1 Plus (Global); Nokia X6 (China)