Lava Z61 vs Oppo A91

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.

  • Display technology

    OLED versus LCD

    Z61:
    LCD
    A91:
    OLED
  • Weight

    Z61: 33 g lighter

    Z61:
    139 g
    A91:
    172 g
  • Width

    Z61: 3.1 mm narrower

    Z61:
    70.2 mm
    A91:
    73.3 mm
  • Screen diagonal

    Z61: 0.95 in smaller diagonal

    Z61:
    5.45 in
    A91:
    6.4 in
  • Chipset

    Z61:
    Mediatek MT6739WW (28 nm)
    A91:
    Mediatek MT6771V Helio P70 (12nm)
  • Rear camera layout

    Z61:
    Single
    A91:
    Quad

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. Z61

    Height:
    146.5 mm
    Width:
    70.2 mm
    Depth:
    8.7 mm +0.8 mm versus A91
  2. 2. A91

    Height:
    160.2 mm +13.7 mm versus Z61
    Width:
    73.3 mm +3.1 mm versus Z61
    Depth:
    7.9 mm

Weight

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

  1. 1. Z61

    139 g

  2. 2. A91

    172 g

    +33 g versus Z61

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. Z61

    Screen diagonal:
    5.45 in
    Aspect ratio (height:width):
    18:9
    Approximate rectangular screen area:
    76.7 cm²
  2. 2. A91

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

A91 has approximately 29% more rectangular screen area than Z61.

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 Z61, A91, compared at the same storage capacity.
StorageZ61A91
128 GB Unknown 8 GB RAM
Z61: Original memory entry

16 GB · 1/2 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. Z61

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB

2. A91

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 256 GB (dedicated 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. Z61

    3000 mAh

  2. 2. A91

    4025 mAh

    +1025 mAh versus Z61

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. Z612. A91

Everyday essentials
Everyday essentials — specifications for Z61, A91.
SpecificationZ61A91
Dimensions (HxWxD)
  • 146.5 Х 70.2 Х 8.7 mm
  • 160.2 Х 73.3 Х 7.9 mm
Weight
  • 139 g
  • 172 g
Technology
  • IPS LCD
  • AMOLED
Screen size
  • 5.45" inch
  • 6.4" 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.
  • 16 GB
  • 1/2 GB RAM
  • 128GB 8GB RAM
Memory card support
  • microSD
  • up to 32 GB
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 3000 mAh
  • Removable Li-Po
  • 4025 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 8.0 Oreo (Go edition) - 1 GB RAM modelAndroid 8.1 (Oreo) - 2 GB RAM model
  • Android 9.0 (Pie); ColorOS 6.1
Chipset
  • Mediatek MT6739WW (28 nm)
  • Mediatek MT6771V Helio P70 (12nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Z61, A91.
SpecificationZ61A91
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 76.7 cm2
  • 100.4 cm2
Screen format
  • 18:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 74.5%
  • 85.5%
PPI /points per inch/
  • 295 PPI
  • 408 PPI
Screen protection
  • Corning Gorilla Glass (unspecified version)
  • Corning Gorilla Glass 5
Camera and Video
Camera and Video — specifications for Z61, A91.
SpecificationZ61A91
Rear camera, main
  • 8 MP
  • Single
  • 48 MP
  • Quad
Camera specs
  • 8 MP
  • f/2.0
  • 1.12µm
  • AF
  • 48 MP
  • f/1.8
  • 26mm (wide)
  • 1/2.0"
  • 0.8µm
  • PDAF -8 MP
  • f/2.2
  • 13mm (ultrawide)
  • 1/4.0"
  • 1.12µm -2 MP B/W
  • f/2.4
  • 1/5.0"
  • 1.75µm -2 MP
  • 1.75µm
  • depth sensor
Functions
  • LED flash
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 5 MP
  • Single
  • 16 MP
  • Single
Specifications
  • 5 MP
  • f/2.4
  • 16 MP
  • f/2.0
  • 26mm (wide)
  • 1/3.1''
  • 1.0µm
Performance

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

Performance — specifications for Z61, A91.
SpecificationZ61A91
Processor CPU
  • Quad-core 1.5 GHz Cortex-A53
  • Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
Graphics processor GPU
  • PowerVR GE8100
  • Mali-G72 MP3
Antutu 7 score *
  • 35202
  • 135756
General specs
General specs — specifications for Z61, A91.
SpecificationZ61A91
Release date
  • 2018
  • July
  • 2019
  • December
Colors
  • Gold
  • Black
  • Dark Blue
  • Red
  • Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 5700 INR
  • 260 EUR
Body build Unknown
  • Glass front (Gorilla Glass 5)
  • plastic back
  • plastic frame
Communication and Connectivity
Communication and Connectivity — specifications for Z61, A91.
SpecificationZ61A91
SIM card
  • Dual SIM (Micro-SIM/Nano-SIM
  • dual stand-by)
  • 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 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 8(900)
  • 34(2000)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • HSPA
  • LTE Cat4 150/50 Mbps
  • HSPA 42.2/11.5 Mbps
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac/ax
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • BDS
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 4.0
  • A2DP
  • 4.2
  • A2DP
  • LE
Music and Audio
Music and Audio — specifications for Z61, A91.
SpecificationZ61A91
Radio
  • FM radio
  • FM radio
Others Unknown
  • 430 nits typ. brightness
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for Z61, A91.
SpecificationZ61A91
Dop
  • Sensors Accelerometer
  • proximity - For India
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast charging 20W
  • 50% in 30 min -VOOC 3.0