Lava Z91 vs Posh Volt Max LTE L640

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: 83 g lighter

    Z91:
    147 g
    Volt Max LTE L640:
    230 g
  • Width

    Z91: 16.4 mm narrower

    Z91:
    72.9 mm
    Volt Max LTE L640:
    89.3 mm
  • Screen diagonal

    Z91: 0.74 in smaller diagonal

    Z91:
    5.7 in
    Volt Max LTE L640:
    6.44 in
  • Chipset

    Z91:
    Mediatek MT6739 (28 nm)
    Volt Max LTE L640:
    Mediatek MT6753 (28 nm)
  • Height

    Z91: 24 mm shorter

    Z91:
    152 mm
    Volt Max LTE L640:
    176 mm
  • Release year

    Z91:
    2018
    Volt Max LTE L640:
    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. Z91

    Height:
    152 mm
    Width:
    72.9 mm
    Depth:
    7.7 mm
  2. 2. Volt Max LTE L640

    Height:
    176 mm +24 mm versus Z91
    Width:
    89.3 mm +16.4 mm versus Z91
    Depth:
    8.1 mm

Weight

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

  1. 1. Z91

    147 g

  2. 2. Volt Max LTE L640

    230 g

    +83 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.

At least two phones need compatible screen dimensions for a drawing.

  1. 1. Z91

    Screen diagonal:
    5.7 in
    Aspect ratio (height:width):
    18:9
    Approximate rectangular screen area:
    83.8 cm²
  2. 2. Volt Max LTE L640

    Volt Max LTE L640: Screen geometry unavailable or conflicting.

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, Volt Max LTE L640, compared at the same storage capacity.
StorageZ91Volt Max LTE L640
32 GB Recorded for all phones 3 GB RAM 3 GB RAM
64 GB Not recorded 3 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. Volt Max LTE L640

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
No

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. Volt Max LTE L640

    6000 mAh

    +3000 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. Volt Max LTE L640

Everyday essentials
Everyday essentials — specifications for Z91, Volt Max LTE L640.
SpecificationZ91Volt Max LTE L640
Dimensions (HxWxD)
  • 152 Х 72.9 Х 7.7 mm
  • 176 Х 89.3 Х 8.1 mm
Weight
  • 147 g
  • 230 g
Technology
  • IPS LCD
  • IPS LCD
Screen size
  • 5.7" inch
  • 6.44" inch
Screen resolution
  • 720 x 1440 px
  • 1280 x 1920 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 32 GB
  • 3 GB RAM
  • 32/64 GB
  • 3 GB RAM
Memory card support
  • microSD
  • up to 128 GB (dedicated slot)
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 3000 mAh
  • Non-removable Li-Po
  • 6000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 7.1 (Nougat)
  • Android 5.1 (Lollipop)
Chipset
  • Mediatek MT6739 (28 nm)
  • Mediatek MT6753 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Z91, Volt Max LTE L640.
SpecificationZ91Volt Max LTE L640
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 83.8 cm2
  • 123.5 cm2
Screen format
  • 18:9 (height:width)
  • 3:2 (height:width)
Screen to body ratio
  • 75.7%
  • 78.6%
PPI /points per inch/
  • 282 PPI
  • 358 PPI
Camera and Video
Camera and Video — specifications for Z91, Volt Max LTE L640.
SpecificationZ91Volt Max LTE L640
Rear camera, main
  • 13 MP
  • Single
  • 13 MP
  • Single
Camera specs
  • 13 MP
  • f/2.0
  • 1.12µm
  • AF
  • 13 MP
  • f/2.4
  • 1/3''
  • 1.12µm
  • AF
Functions
  • LED flash
  • LED flash
  • panorama
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 8 MP
  • Single
  • 8 MP
  • Single
Specifications
  • 8 MP
  • f/2.2
  • 8 MP
  • f/2.2
  • 1/4''
  • 1.12µm
Performance

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

Performance — specifications for Z91, Volt Max LTE L640.
SpecificationZ91Volt Max LTE L640
Processor CPU
  • Quad-core 1.3 GHz Cortex-A53
  • Octa-core 1.3 GHz Cortex-A53
Graphics processor GPU
  • PowerVR GE8100
  • Mali-T760MP2
Antutu 7 score *
  • 35722
Unknown
General specs
General specs — specifications for Z91, Volt Max LTE L640.
SpecificationZ91Volt Max LTE L640
Release date
  • 2018
  • March
  • 2016
  • March
Colors
  • Blue
  • Grey
  • Gold
  • Rose Gold
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 10000 INR
Unknown
Battery life Unknown
  • Stand by time- Up to 600 h (2G) / Up to 400 h (3G) Talking time- Up to 16 h (2G) / Up to 8 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for Z91, Volt Max LTE L640.
SpecificationZ91Volt Max LTE L640
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM (Micro-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 / 1900 / 2100 -4G - LTE band 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 7(2600)
  • 17(700)
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE Cat4 150/50 Mbps
  • HSPA
  • 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 b/g/n
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • USB On-The-Go
  • microUSB 2.0
  • USB On-The-Go
Bluetooth
  • 4.0
  • A2DP
  • 4.1
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Z91, Volt Max LTE L640.
SpecificationZ91Volt Max LTE L640
Radio
  • FM radio
  • No
Other features
Other features — specifications for Z91, Volt Max LTE L640.
SpecificationZ91Volt Max LTE L640
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • proximity - For India
  • Sensors Accelerometer
  • proximity
  • compass - Fast battery charging