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Acer DX900 vs T-Mobile Sidekick 3

Compare recorded specifications, size and practical differences.

Acer DX900

Acer DX900

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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.

  • WeightDX900: 43 g lighterDX900: 147 g · Sidekick 3: 190 g
  • WidthSidekick 3: 1.5 mm narrowerSidekick 3: 59 mm · DX900: 60.5 mm
  • Screen diagonalSidekick 3: 0.2 in smaller diagonalSidekick 3: 2.6 in · DX900: 2.8 in
  • DepthDX900: 5 mm thinnerDX900: 17 mm · Sidekick 3: 22 mm
  • HeightDX900: 24 mm shorterDX900: 106 mm · Sidekick 3: 130 mm
  • Release year2009 / 2006DX900: 2009 · Sidekick 3: 2006

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.

Front
DX900: 106 × 60.5 mm 1 Sidekick 3: 130 × 59 mm 2
Side
DX900: 106 × 17 mm 1 Sidekick 3: 130 × 22 mm 2
  1. 1. DX900
    Height
    106 mm
    Width
    60.5 mm+1.5 mm versus Sidekick 3
    Depth
    17 mm
    Weight
    147 g
  2. 2. Sidekick 3
    Height
    130 mm+24 mm versus DX900
    Width
    59 mm
    Depth
    22 mm+5 mm versus DX900
    Weight
    190 g
Weight

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

  1. 1. DX900147 g
  2. 2. Sidekick 3190 g

    +43 g versus DX900

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.

Screen size
DX900: 2.8 in, 4:3, About 24.3 cm² rectangular area 1 Sidekick 3: 2.6 in, 3:2, About 20.1 cm² rectangular area 2
  1. 1. DX900 2.8 in · 4:3 About 24.3 cm² rectangular area
  2. 2. Sidekick 3 2.6 in · 3:2 About 20.1 cm² rectangular area

DX900 has approximately 20.6% more rectangular screen area than Sidekick 3.

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.

DX900: Original memory entry

128 MB RAM · 256 MB ROM

Sidekick 3: Original memory entry

64 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. DX900

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

2. Sidekick 3

NFC
Unknown
Headphone jack
No
Memory card support
See details miniSD

Battery capacity

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

Recorded capacity

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

  1. 1. DX9001530 mAh

    +30 mAh versus Sidekick 3

  2. 2. Sidekick 31500 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. DX9002. Sidekick 3

Everyday essentials
Everyday essentials
SpecificationDX900Sidekick 3
Dimensions (HxWxD)
  • 106 Х 60.5 Х 17 mm
  • 130 Х 59 Х 22 mm
Weight
  • 147 g
  • 190 g
Technology
  • TFT
  • TFT
Screen size
  • 2.8" inch
  • 2.6" inch
Screen resolution
  • 480 x 640 px
  • 160 x 240 px
Internal memoryRecorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128 MB RAM
  • 256 MB ROM
  • 64 MB RAM
Memory card support
  • microSD (dedicated slot)
  • miniSD
BatteryCapacity is not battery life. No endurance test is implied.
  • 1530 mAh
  • Removable Li-Po
  • 1500 mAh
  • Removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 6.1 Professional
  • Danger 3.0
NFC
  • Super AMOLED
Unknown
Headphone jack
  • panorama
  • No
Display
Display
SpecificationDX900Sidekick 3
Touchscreen
  • resistive touchscreen
Unknown
Display colors
  • 65K
  • 65K
Screen area
  • 24.3 cm2
  • 20.1 cm2
Screen format
  • 4:3 (height:width)
  • 3:2 (height:width)
Screen to body ratio
  • 37.9%
  • 26.2%
PPI /points per inch/
  • 286 PPI
  • 111 PPI
Camera and Video
Camera and Video
SpecificationDX900Sidekick 3
Rear camera, main
  • 3.15 MP
  • Single
  • 1.3 MP
  • Single
Camera specs
  • 3.15 MP
  • AF
  • 1.3 MP
Functions
  • Dual-LED flash
  • LED flash
Video
  • Yes
  • No
Front camera, selfie
  • 0.3 MP
  • Single
  • 0 MP,
Specifications
  • VGA videocall camera
Unknown
Performance
Performance
SpecificationDX900Sidekick 3
Processor CPU
  • 533 MHz Samsung S3C 6410
Unknown
General specs
General specs
SpecificationDX900Sidekick 3
Release date
  • 2009
  • February
  • 2006
  • June
Colors
  • Black
  • Black
Historical recorded priceLegacy catalogue value; date unknown. Not a current offer.
  • 90 EUR
Unknown
Battery life
  • Stand by time- Up to 150 h Talking time- Up to10 h
  • Stand by time- Up to 72 h Talking time- Up to 4 h 50 min
Communication and Connectivity
Communication and Connectivity
SpecificationDX900Sidekick 3
SIM card
  • Dual SIM (Mini-SIM)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 GSM 900 / 1800 / 1900 - SIM 2
Unknown
Speed
  • HSPA 7.2/0.384 Mbps
Unknown
GPRS
  • Class 10
  • Class 10
Edge
  • Class 10
  • Class 10
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • No
GPS
  • Yes
  • SiRF Star III chipset
  • No
USB
  • miniUSB
  • 1.1
Bluetooth
  • microUSB 2.0
  • A2DP
  • 1.2
Music and Audio
Music and Audio
SpecificationDX900Sidekick 3
Radio
  • panorama
  • No
Others
  • Handwriting recognition
  • Swivel display
Other features
Other features
SpecificationDX900Sidekick 3
Dop
  • Sensors Accelerometer Pocket Office -Voice memo -MP3 player Also known as Acer Tempo DX900
  • Acer Tempo X960
  • MP3 audio player -Voice memo

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