Nokia N81 vs Oppo A33

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: 6 g lighter

    N81:
    140 g
    A33:
    146 g
  • Width

    N81: 21.7 mm narrower

    N81:
    50 mm
    A33:
    71.7 mm
  • Screen diagonal

    N81: 2.6 in smaller diagonal

    N81:
    2.4 in
    A33:
    5 in
  • Depth

    A33: 10.3 mm thinner

    N81:
    17.9 mm
    A33:
    7.6 mm
  • Height

    N81: 40.7 mm shorter

    N81:
    102 mm
    A33:
    142.7 mm
  • Release year

    N81:
    2007
    A33:
    2015

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 +10.3 mm versus A33
  2. 2. A33

    Height:
    142.7 mm +40.7 mm versus N81
    Width:
    71.7 mm +21.7 mm versus N81
    Depth:
    7.6 mm

Weight

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

  1. 1. N81

    140 g

  2. 2. A33

    146 g

    +6 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. A33

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

A33 has approximately 286.4% 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, A33, compared at the same storage capacity.
StorageN81A33
16 GB Unknown 2 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. A33

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. N81

    1050 mAh

  2. 2. A33

    2400 mAh

    +1350 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. A33

Everyday essentials
Everyday essentials — specifications for N81, A33.
SpecificationN81A33
Dimensions (HxWxD)
  • 102 Х 50 Х 17.9 mm
  • 142.7 Х 71.7 Х 7.6 mm
Weight
  • 140 g
  • 146 g
Technology
  • TFT
  • IPS LCD
Screen size
  • 2.4" inch
  • 5" inch
Screen resolution
  • 240 x 320 px
  • 540 x 960 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 12 MB
  • 96 MB RAM
  • 16 GB
  • 2 GB RAM
Memory card support
  • microSD
  • up to 8 GB (dedicated slot)
  • 2 GB included
  • microSD
  • up to 256 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1050 mAh
  • Removable Li-Po
  • 2400 mAh
  • Non-removable Li-Po
Operating system OS
  • Symbian OS 9.2
  • Series 60 v3.1 UI
  • Android 5.1 (Lollipop); ColorOS 2.1
Chipset Unknown
  • Qualcomm MSM8916 Snapdragon 410 (28 nm)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for N81, A33.
SpecificationN81A33
Touchscreen Unknown
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 17.8 cm2
  • 68.9 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 35.0%
  • 67.4%
PPI /points per inch/
  • 167 PPI
  • 220 PPI
Camera and Video
Camera and Video — specifications for N81, A33.
SpecificationN81A33
Rear camera, main
  • 2 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 2 MP
  • 8 MP
  • 1/3.2''
  • 1.4µm
  • AF
Functions
  • LED flash
  • LED flash
  • HDR
  • panorama
Video
  • 320p@15fps
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 5 MP
  • Single
Specifications
  • CIF videocall camera
  • 5 MP
Performance

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

Performance — specifications for N81, A33.
SpecificationN81A33
Processor CPU
  • 369 MHz ARM 11
  • Quad-core 1.2 GHz Cortex-A53
Graphics processor GPU Unknown
  • Adreno 306
Antutu 7 score * Unknown
  • 26122
GeekBench 4 Single Core * Unknown
  • 483
GeekBench 4 Multi-Core * Unknown
  • 1235
GeekBench 4 RenderScript * Unknown
  • 920
General specs
General specs — specifications for N81, A33.
SpecificationN81A33
Release date
  • 2007
  • August
  • 2015
  • November
Colors
  • Cobalt blue
  • Graphite Grey
  • White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 200 EUR
  • 240 EUR
Battery life
  • Stand by time- Up to 410 h Talking time- Up to 4 h (2G) / 3 h (3G)
  • Stand by time- Up to 250 h (3G) Talking time- Up to 8 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for N81, A33.
SpecificationN81A33
SIM card
  • Mini-SIM
  • Dual SIM (Nano-SIM/ Micro-SIM)
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 -3G - HSDPA 850 / 900 / 1900 / 2100 TD-SCDMA -4G - LTE band 1(2100)
  • 3(1800)
  • 38(2600)
  • 39(1900)
  • 40(2300)
  • 41(2500)
Speed
  • Yes
  • 384 kbps
  • HSPA
  • LTE
GPRS
  • Class 10
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11b/g with UPnP
  • Wi-Fi 802.11 b/g/n
GPS
  • No
  • Yes
  • with A-GPS
USB
  • microUSB 2.0
  • microUSB 2.0
  • USB Host
Bluetooth
  • 2.0
  • A2DP
  • 4.0
  • A2DP
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, A33.
SpecificationN81A33
Radio
  • Stereo FM radio
  • FM radio
Others
  • Touch-sensitive Navi wheel
Unknown
Other features
Other features — specifications for N81, A33.
SpecificationN81A33
Dop
  • MP3/AAC/MP4 player -Predictive text input -Push to talk -Voice dial/memo -Organizer
  • Sensors Accelerometer
  • proximity
  • compass