Acer DX900 vs Motorola Photon 4G MB855

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

    DX900: 11 g lighter

    DX900:
    147 g
    Photon 4G MB855:
    158 g
  • Width

    DX900: 6.4 mm narrower

    DX900:
    60.5 mm
    Photon 4G MB855:
    66.9 mm
  • Screen diagonal

    DX900: 1.5 in smaller diagonal

    DX900:
    2.8 in
    Photon 4G MB855:
    4.3 in
  • Depth

    Photon 4G MB855: 4.8 mm thinner

    DX900:
    17 mm
    Photon 4G MB855:
    12.2 mm
  • Height

    DX900: 20.9 mm shorter

    DX900:
    106 mm
    Photon 4G MB855:
    126.9 mm
  • Release year

    DX900:
    2009
    Photon 4G MB855:
    2011

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. DX900

    Height:
    106 mm
    Width:
    60.5 mm
    Depth:
    17 mm +4.8 mm versus Photon 4G MB855
  2. 2. Photon 4G MB855

    Height:
    126.9 mm +20.9 mm versus DX900
    Width:
    66.9 mm +6.4 mm versus DX900
    Depth:
    12.2 mm

Weight

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

  1. 1. DX900

    147 g

  2. 2. Photon 4G MB855

    158 g

    +11 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.

  1. 1. DX900

    Screen diagonal:
    2.8 in
    Aspect ratio (height:width):
    4:3
    Approximate rectangular screen area:
    24.3 cm²
  2. 2. Photon 4G MB855

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

Photon 4G MB855 has approximately 109.9% more rectangular screen area than DX900.

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 DX900, Photon 4G MB855, compared at the same storage capacity.
StorageDX900Photon 4G MB855
16 GB Unknown 1 GB RAM
DX900: Original memory entry

128 MB RAM · 256 MB ROM

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. Photon 4G MB855

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.

Recorded battery capacity

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

  1. 1. DX900

    1530 mAh

  2. 2. Photon 4G MB855

    1700 mAh

    +170 mAh versus DX900

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. Photon 4G MB855

Everyday essentials
Everyday essentials — specifications for DX900, Photon 4G MB855.
SpecificationDX900Photon 4G MB855
Dimensions (HxWxD)
  • 106 Х 60.5 Х 17 mm
  • 126.9 Х 66.9 Х 12.2 mm
Weight
  • 147 g
  • 158 g
Technology
  • TFT
  • TFT
Screen size
  • 2.8" inch
  • 4.3" inch
Screen resolution
  • 480 x 640 px
  • 540 x 960 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 128 MB RAM
  • 256 MB ROM
  • 16 GB
  • 1 GB RAM
Memory card support
  • microSD (dedicated slot)
  • microSD
  • up to 32 GB (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1530 mAh
  • Removable Li-Po
  • 1700 mAh
  • Removable Li-Ion
Operating system OS
  • Microsoft Windows Mobile 6.1 Professional
  • Android 2.3 (Gingerbread)
  • not upgradable to 4.1 (Jelly Bean)
Chipset Unknown
  • Nvidia Tegra 2 AP20H
NFC
  • Super AMOLED
Unknown
Headphone jack
  • panorama
  • Yes
Display
Display — specifications for DX900, Photon 4G MB855.
SpecificationDX900Photon 4G MB855
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 24.3 cm2
  • 51.0 cm2
Screen format
  • 4:3 (height:width)
  • 16:9 (height:width)
Screen to body ratio
  • 37.9%
  • 60.0%
PPI /points per inch/
  • 286 PPI
  • 256 PPI
Screen protection Unknown
  • Corning Gorilla Glass
Camera and Video
Camera and Video — specifications for DX900, Photon 4G MB855.
SpecificationDX900Photon 4G MB855
Rear camera, main
  • 3.15 MP
  • Single
  • 8 MP
  • Single
Camera specs
  • 3.15 MP
  • AF
  • 8 MP
  • AF
Functions
  • Dual-LED flash
  • Dual-LED flash
Video
  • Yes
  • 720p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 0.3 MP
  • Single
Specifications
  • VGA videocall camera
  • VGA
Performance
Performance — specifications for DX900, Photon 4G MB855.
SpecificationDX900Photon 4G MB855
Processor CPU
  • 533 MHz Samsung S3C 6410
  • Dual-core 1.0 GHz Cortex-A9
Graphics processor GPU Unknown
  • ULP GeForce
General specs
General specs — specifications for DX900, Photon 4G MB855.
SpecificationDX900Photon 4G MB855
Release date
  • 2009
  • February
  • 2011
  • June
Colors
  • Black
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 90 EUR
  • 270 EUR
Battery life
  • Stand by time- Up to 150 h Talking time- Up to10 h
  • Stand by time- Up to 200 h Talking time- Up to 10 h
Communication and Connectivity
Communication and Connectivity — specifications for DX900, Photon 4G MB855.
SpecificationDX900Photon 4G MB855
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
  • Show all network frequencies: -2G - CDMA 800 / 1900 GSM 850 / 900 / 1800 / 1900
Speed
  • HSPA 7.2/0.384 Mbps
  • EV-DO Rev.A 3.1 Mbps
  • HSPA
GPRS
  • Class 10
  • Class 12
Edge
  • Class 10
  • Class 12
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 b/g/n
  • DLNA
  • hotspot; WiMAX 802.16 e
GPS
  • Yes
  • SiRF Star III chipset
  • Yes
  • with A-GPS
USB
  • miniUSB
  • microUSB 2.0
Bluetooth
  • microUSB 2.0
  • A2DP
  • 2.1
  • A2DP
  • EDR
Harmful irradiation Unknown
  • SAR - 0.93 W/kg (head) 0.91 W/kg (body)
Music and Audio
Music and Audio — specifications for DX900, Photon 4G MB855.
SpecificationDX900Photon 4G MB855
Radio
  • panorama
  • Stereo FM radio
  • RDS
Others
  • Handwriting recognition
  • Active noise cancellation with dedicated mic
Other features
Other features — specifications for DX900, Photon 4G MB855.
SpecificationDX900Photon 4G MB855
Dop
  • Sensors Accelerometer Pocket Office -Voice memo -MP3 player Also known as Acer Tempo DX900
  • Acer Tempo X960
  • Sensors Accelerometer
  • proximity
  • compass - HDMI port -MP3/WAV/WMA/AAC+ player -MP4/WMV/H.264 player -Quickoffice document viewer -Photo viewer/editor -Organizer -Voice memo/dial/commands -Predictive text input (Swype) - Built-in kickstand - Also known as Motorola ELECTRIFY