Nokia N81 vs vivo NEX Dual Display

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

    N81: 59 g lighter

    N81:
    140 g
    NEX Dual Display:
    199 g
  • Width

    N81: 25.3 mm narrower

    N81:
    50 mm
    NEX Dual Display:
    75.3 mm
  • Screen diagonal

    N81: 3.99 in smaller diagonal

    N81:
    2.4 in
    NEX Dual Display:
    6.39 in
  • Rear camera layout

    N81:
    Single
    NEX Dual Display:
    Triple
  • Depth

    NEX Dual Display: 9.8 mm thinner

    N81:
    17.9 mm
    NEX Dual Display:
    8.1 mm
  • Height

    N81: 55.2 mm shorter

    N81:
    102 mm
    NEX Dual Display:
    157.2 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. N81

    Height:
    102 mm
    Width:
    50 mm
    Depth:
    17.9 mm +9.8 mm versus NEX Dual Display
  2. 2. NEX Dual Display

    Height:
    157.2 mm +55.2 mm versus N81
    Width:
    75.3 mm +25.3 mm versus N81
    Depth:
    8.1 mm

Weight

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

  1. 1. N81

    140 g

  2. 2. NEX Dual Display

    199 g

    +59 g versus N81

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. N81

    Screen diagonal:
    2.4 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    17.8 cm²
  2. 2. NEX Dual Display

    Screen diagonal:
    6.39 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    100.2 cm²

NEX Dual Display has approximately 461.9% more rectangular screen area than N81.

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 N81, NEX Dual Display, compared at the same storage capacity.
StorageN81NEX Dual Display
128 GB Unknown 10 GB RAM
N81: Original memory entry

12 MB · 96 MB 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. N81

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 8 GB (dedicated slot) · 2 GB included

2. NEX Dual Display

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. N81

    1050 mAh

  2. 2. NEX Dual Display

    3500 mAh

    +2450 mAh versus N81

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. N812. NEX Dual Display

Everyday essentials
Everyday essentials — specifications for N81, NEX Dual Display.
SpecificationN81NEX Dual Display
Dimensions (HxWxD)
  • 102 Х 50 Х 17.9 mm
  • 157.2 Х 75.3 Х 8.1 mm
Weight
  • 140 g
  • 199 g
Technology
  • TFT
  • Super AMOLED
Screen size
  • 2.4" inch
  • 6.39" inch
Screen resolution
  • 240 x 320 px
  • 1080 x 2340 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 12 MB
  • 96 MB RAM
  • 128 GB
  • 10 GB RAM
Memory card support
  • microSD
  • up to 8 GB (dedicated slot)
  • 2 GB included
  • No
Battery Capacity is not battery life. No endurance test is implied.
  • 1050 mAh
  • Removable Li-Po
  • 3500 mAh
  • Non-removable Li-Ion
Operating system OS
  • Symbian OS 9.2
  • Series 60 v3.1 UI
  • Android 9.0 (Pie); Funtouch 4.5
Chipset Unknown
  • Qualcomm SDM845 Snapdragon 845 (10 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for N81, NEX Dual Display.
SpecificationN81NEX Dual Display
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 17.8 cm2
  • 100.2 cm2
Screen format
  • 4:3 (height:width)
  • 19.5:9 (height:width)
Screen to body ratio
  • 35.0%
  • 84.7%
PPI /points per inch/
  • 167 PPI
  • 403 PPI
Camera and Video
Camera and Video — specifications for N81, NEX Dual Display.
SpecificationN81NEX Dual Display
Rear camera, main
  • 2 MP
  • Single
  • 12 MP
  • Triple
Camera specs
  • 2 MP
  • 12 MP
  • f/1.8
  • 1/2.55''
  • 1.4µm
  • 4-axis OIS
  • Dual Pixel PDAF -2 MP
  • depth sensor -TOF camera
  • f/1.3
Functions
  • LED flash
  • LED flash
  • HDR
  • panorama
Video
  • 320p@15fps
  • 2160p@30fps
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 12 MP
  • Triple
Specifications
  • CIF videocall camera
  • Uses main cameras
Performance

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

Performance — specifications for N81, NEX Dual Display.
SpecificationN81NEX Dual Display
Processor CPU
  • 369 MHz ARM 11
  • Octa-core (4x2.7 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver)
Graphics processor GPU Unknown
  • Adreno 630
Antutu 8 score * Unknown
  • 340355
General specs
General specs — specifications for N81, NEX Dual Display.
SpecificationN81NEX Dual Display
Release date
  • 2007
  • August
  • 2018
  • December
Colors
  • Cobalt blue
  • Graphite Grey
  • Polar Blue
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 200 EUR
  • 700 EUR
Battery life
  • Stand by time- Up to 410 h Talking time- Up to 4 h (2G) / 3 h (3G)
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for N81, NEX Dual Display.
SpecificationN81NEX Dual Display
SIM card
  • Mini-SIM
  • Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100)
  • 3(1800)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 19(800)
  • 28(700)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • Yes
  • 384 kbps
  • HSPA 42.2/5.76 Mbps
  • LTE-A (4CA) Cat16 1024/150 Mbps
GPRS
  • Class 10
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11b/g with UPnP
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • BDS
  • GNSS
USB
  • microUSB 2.0
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 2.0
  • A2DP
  • 5.0
  • A2DP
  • LE
Harmful irradiation
  • SAR - 0.73 W/kg (head) 0.60 W/kg (body) SAR EU - 0.81 W/kg (head)
Unknown
Music and Audio
Music and Audio — specifications for N81, NEX Dual Display.
SpecificationN81NEX Dual Display
Radio
  • Stereo FM radio
  • No
Others
  • Touch-sensitive Navi wheel
  • Secondary display (on the back): -Super AMOLED
  • 5.49 inches
  • 1080 x 1920 pixels
  • 32-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features
Other features — specifications for N81, NEX Dual Display.
SpecificationN81NEX Dual Display
Dop
  • MP3/AAC/MP4 player -Predictive text input -Push to talk -Voice dial/memo -Organizer
  • Sensors Fingerprint (under display)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging 10V/2.25A 22.5W