Lenovo K8 Note vs Micromax Ninja 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.

  • Weight

    Ninja A91: 30.9 g lighter

    K8 Note:
    180 g
    Ninja A91:
    149.1 g
  • Width

    Ninja A91: 9.9 mm narrower

    K8 Note:
    75.9 mm
    Ninja A91:
    66 mm
  • Screen diagonal

    Ninja A91: 1 in smaller diagonal

    K8 Note:
    5.5 in
    Ninja A91:
    4.5 in
  • Chipset

    K8 Note:
    Mediatek MT6797D Helio X23 (20 nm)
    Ninja A91:
    Mediatek MT6577 (40 nm)
  • Rear camera layout

    K8 Note:
    Dual
    Ninja A91:
    Single
  • Depth

    K8 Note: 1.5 mm thinner

    K8 Note:
    8.5 mm
    Ninja A91:
    10 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. K8 Note

    Height:
    154.5 mm +24.5 mm versus Ninja A91
    Width:
    75.9 mm +9.9 mm versus Ninja A91
    Depth:
    8.5 mm
  2. 2. Ninja A91

    Height:
    130 mm
    Width:
    66 mm
    Depth:
    10 mm +1.5 mm versus K8 Note

Weight

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

  1. 1. K8 Note

    180 g

    +30.9 g versus Ninja A91

  2. 2. Ninja A91

    149.1 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. K8 Note

    Screen diagonal:
    5.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    83.4 cm²
  2. 2. Ninja A91

    Screen diagonal:
    4.5 in
    Aspect ratio (height:width):
    16:9
    Approximate rectangular screen area:
    55.8 cm²

K8 Note has approximately 49.4% more rectangular screen area than Ninja A91.

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.

No unambiguous storage/RAM pairings are recorded. See the original specifications below.

K8 Note: Original memory entry

64 GB · 4 GB RAM 32 GB · 3 GB RAM

Ninja A91: Original memory entry

2 GB

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. K8 Note

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

2. Ninja A91

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

Battery capacity

Capacity is not battery life. No endurance test is implied.

At least two unambiguous positive capacity values are needed for a chart. Original entries remain in the specifications.

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. K8 Note2. Ninja A91

Everyday essentials
Everyday essentials — specifications for K8 Note, Ninja A91.
SpecificationK8 NoteNinja A91
Dimensions (HxWxD)
  • 154.5 Х 75.9 Х 8.5 mm
  • 130 Х 66 Х 10 mm
Weight
  • 180 g
  • 149.1 g
Technology
  • IPS LCD
  • TFT
Screen size
  • 5.5" inch
  • 4.5" inch
Screen resolution
  • 1080 x 1920 px
  • 480 x 854 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 GB
  • 4 GB RAM 32 GB
  • 3 GB RAM
  • 2 GB
Memory card support
  • microSD
  • up to 256 GB (dedicated slot)
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 4000 mAh
  • Non-removable Li-Po
  • 0 mAh,
Operating system OS
  • Android 7.1.1 (Nougat)
  • upgradable to Android 8.0 (Oreo)
  • Android 4.0 (Ice Cream Sandwich)
Chipset
  • Mediatek MT6797D Helio X23 (20 nm)
  • Mediatek MT6577 (40 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for K8 Note, Ninja A91.
SpecificationK8 NoteNinja A91
Touchscreen
  • capacitive touchscreen
  • touchscreen
Display colors
  • 16M
Unknown
Screen area
  • 83.4 cm2
  • 55.8 cm2
Screen format
  • 16:9 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 71.1%
  • 65.0%
PPI /points per inch/
  • 401 PPI
  • 218 PPI
Screen protection
  • Corning Gorilla Glass 3
Unknown
Camera and Video
Camera and Video — specifications for K8 Note, Ninja A91.
SpecificationK8 NoteNinja A91
Rear camera, main
  • 13 MP
  • Dual
  • 5 MP
  • Single
Camera specs
  • 13 MP
  • f/1.7
  • PDAF -5 MP
  • depth sensor
  • 5 MP
Functions
  • LED flash
Unknown
Video
  • 1080p@30fps
  • Yes
Front camera, selfie
  • 13 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • 13 MP
  • f/2.0
  • VGA
Performance

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

Performance — specifications for K8 Note, Ninja A91.
SpecificationK8 NoteNinja A91
Processor CPU
  • Deca-core 2.3 GHz
  • Dual-core 1.0 GHz Cortex-A9
Graphics processor GPU
  • Mali-T880 MP4
  • PowerVR SGX531u
Antutu 7 score *
  • 90722
Unknown
GeekBench 4 Single Core *
  • 1476
Unknown
GeekBench 4 Multi-Core *
  • 4067
Unknown
GeekBench 4 RenderScript *
  • 3243
Unknown
GeekBench 5 Single Core *
  • 218
Unknown
GeekBench 5 Multi-Core *
  • 950
Unknown
General specs
General specs — specifications for K8 Note, Ninja A91.
SpecificationK8 NoteNinja A91
Release date
  • 2017
  • August
  • 2013
  • March
Colors
  • Fine Gold
  • Venom Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 180 EUR
  • 120 EUR
Battery life
  • Stand by time- Up to 378 h (3G) Talking time- Up to 25 h (3G)
  • Stand by time- Up to 230 h Talking time- Up to 4 h 30 min
Body build
  • aluminum body
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for K8 Note, Ninja A91.
SpecificationK8 NoteNinja A91
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Dual SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 40(2300)
  • Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2
Speed
  • HSPA 42.2/5.76 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
  • HSPA
GPRS
  • Yes
  • Class 10
Edge
  • Yes
  • Class 12
Wi-Fi
  • Wi-Fi 802.11 b/g/n/ac
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 b/g/n
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
USB
  • microUSB 2.0
  • USB On-The-Go
  • Proprietary
Bluetooth
  • 4.2
  • A2DP
  • LE
  • 3.0
Music and Audio
Music and Audio — specifications for K8 Note, Ninja A91.
SpecificationK8 NoteNinja A91
Radio
  • FM radio
  • FM radio
Others
  • Dolby Atmos audio enhancement -Active noise cancellation with dedicated mic
Unknown
Other features
Other features — specifications for K8 Note, Ninja A91.
SpecificationK8 NoteNinja A91
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging (Turbo Charge) - Splash Resistant
  • Sensors Accelerometer