Acer DX650 vs Nokia N81

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

    DX650: 7 g lighter

    DX650:
    133 g
    N81:
    140 g
  • Width

    N81: 9 mm narrower

    DX650:
    59 mm
    N81:
    50 mm
  • Screen diagonal

    N81: 0.4 in smaller diagonal

    DX650:
    2.8 in
    N81:
    2.4 in
  • Depth

    DX650: 2.3 mm thinner

    DX650:
    15.6 mm
    N81:
    17.9 mm
  • Height

    N81: 7.6 mm shorter

    DX650:
    109.6 mm
    N81:
    102 mm
  • Release year

    DX650:
    2009
    N81:
    2007

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. DX650

    Height:
    109.6 mm +7.6 mm versus N81
    Width:
    59 mm +9 mm versus N81
    Depth:
    15.6 mm
  2. 2. N81

    Height:
    102 mm
    Width:
    50 mm
    Depth:
    17.9 mm +2.3 mm versus DX650

Weight

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

  1. 1. DX650

    133 g

  2. 2. N81

    140 g

    +7 g versus DX650

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. DX650

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²
  2. 2. N81

    Screen diagonal:
    2.4 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    17.8 cm²

DX650 has approximately 36.1% 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.

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

DX650: Original memory entry

Super AMOLED

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. DX650

NFC:
See details Super AMOLED
Headphone jack:
See details panorama
Memory card support:
See details microSD (dedicated slot)

2. N81

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

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. DX650

    1260 mAh

    +210 mAh versus N81

  2. 2. N81

    1050 mAh

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. DX6502. N81

Everyday essentials
Everyday essentials — specifications for DX650, N81.
SpecificationDX650N81
Dimensions (HxWxD)
  • 109.6 Х 59 Х 15.6 mm
  • 102 Х 50 Х 17.9 mm
Weight
  • 133 g
  • 140 g
Technology
  • TFT
  • TFT
Screen size
  • 2.8" inch
  • 2.4" inch
Screen resolution
  • 240 x 320 px
  • 240 x 320 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • Super AMOLED
  • 12 MB
  • 96 MB RAM
Memory card support
  • microSD (dedicated slot)
  • microSD
  • up to 8 GB (dedicated slot)
  • 2 GB included
Battery Capacity is not battery life. No endurance test is implied.
  • 1260 mAh
  • Removable Li-Ion
  • 1050 mAh
  • Removable Li-Po
Operating system OS
  • Microsoft Windows Mobile 6.1 Professional
  • Symbian OS 9.2
  • Series 60 v3.1 UI
NFC
  • Super AMOLED
Unknown
Headphone jack
  • panorama
  • Yes
Display
Display — specifications for DX650, N81.
SpecificationDX650N81
Touchscreen
  • resistive touchscreen
Unknown
Display colors
  • 65K
  • 16M
Screen area
  • 24.3 cm2
  • 17.8 cm2
Screen format
  • 4:3 (height:width)
  • 4:3 (height:width)
Screen to body ratio
  • 37.5%
  • 35.0%
PPI /points per inch/
  • 143 PPI
  • 167 PPI
Camera and Video
Camera and Video — specifications for DX650, N81.
SpecificationDX650N81
Rear camera, main
  • 2 MP
  • Single
  • 2 MP
  • Single
Camera specs
  • 2 MP
  • 2 MP
Functions Unknown
  • LED flash
Video
  • panorama
  • 320p@15fps
Front camera, selfie
  • 0 MP,
  • 0.3 MP
  • Single
Specifications
  • Super AMOLED
  • CIF videocall camera
Performance
Performance — specifications for DX650, N81.
SpecificationDX650N81
Processor CPU
  • Samsung S3C 6410 533 MHz
  • 369 MHz ARM 11
General specs
General specs — specifications for DX650, N81.
SpecificationDX650N81
Release date
  • 2009
  • June
  • 2007
  • August
Colors
  • Black
  • Cobalt blue
  • Graphite Grey
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 150 EUR
  • 200 EUR
Battery life
  • Stand by time- Up to 150 h Talking time- Up to 4 h
  • Stand by time- Up to 410 h Talking time- Up to 4 h (2G) / 3 h (3G)
Communication and Connectivity
Communication and Connectivity — specifications for DX650, N81.
SpecificationDX650N81
SIM card
  • Single SIM (Mini-SIM)Dual SIM (Mini-SIM/Micro-SIM
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-3G - HSDPA 900 / 2100-4G - LTE
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed
  • Super AMOLED
  • Yes
  • 384 kbps
GPRS
  • Class 10
  • Class 10
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11b/g with UPnP
GPS
  • Yes
  • SiRF Star III chipset
  • No
USB
  • miniUSB
  • microUSB 2.0
Bluetooth
  • microUSB 2.0
  • A2DP
  • 2.0
  • A2DP
Harmful irradiation Unknown
  • SAR - 0.73 W/kg (head) 0.60 W/kg (body) SAR EU - 0.81 W/kg (head)
Music and Audio
Music and Audio — specifications for DX650, N81.
SpecificationDX650N81
Radio
  • FM radio
  • Stereo FM radio
Others
  • Secondary 1.27'' OLED display (128 x 96 pixel resolution) -Handwriting recognition
  • Touch-sensitive Navi wheel
Other features
Other features — specifications for DX650, N81.
SpecificationDX650N81
Dop
  • Sensors Accelerometer Pocket Office -Voice memo -MP3 player
  • MP3/AAC/MP4 player -Predictive text input -Push to talk -Voice dial/memo -Organizer