Acer DX900 vs Samsung Galaxy A31

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: 38 g lighter

    DX900:
    147 g
    Galaxy A31:
    185 g
  • Width

    DX900: 12.6 mm narrower

    DX900:
    60.5 mm
    Galaxy A31:
    73.1 mm
  • Screen diagonal

    DX900: 3.6 in smaller diagonal

    DX900:
    2.8 in
    Galaxy A31:
    6.4 in
  • Rear camera layout

    DX900:
    Single
    Galaxy A31:
    Quad
  • Depth

    Galaxy A31: 8.4 mm thinner

    DX900:
    17 mm
    Galaxy A31:
    8.6 mm
  • Height

    DX900: 53.3 mm shorter

    DX900:
    106 mm
    Galaxy A31:
    159.3 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. DX900

    Height:
    106 mm
    Width:
    60.5 mm
    Depth:
    17 mm +8.4 mm versus Galaxy A31
  2. 2. Galaxy A31

    Height:
    159.3 mm +53.3 mm versus DX900
    Width:
    73.1 mm +12.6 mm versus DX900
    Depth:
    8.6 mm

Weight

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

  1. 1. DX900

    147 g

  2. 2. Galaxy A31

    185 g

    +38 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. Galaxy A31

    Screen diagonal:
    6.4 in
    Aspect ratio (height:width):
    20:9
    Approximate rectangular screen area:
    98.9 cm²

Galaxy A31 has approximately 307.3% 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, Galaxy A31, compared at the same storage capacity.
StorageDX900Galaxy A31
64 GB Unknown 4 GB RAM
128 GB Unknown 4 / 6 GB RAM Alternative RAM configurations
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. Galaxy A31

NFC:
See details Yes (market/region dependent)
Headphone jack:
Yes
Memory card support:
See details microSDXC (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. Galaxy A31

    5000 mAh

    +3470 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. Galaxy A31

Everyday essentials
Everyday essentials — specifications for DX900, Galaxy A31.
SpecificationDX900Galaxy A31
Dimensions (HxWxD)
  • 106 Х 60.5 Х 17 mm
  • 159.3 Х 73.1 Х 8.6 mm
Weight
  • 147 g
  • 185 g
Technology
  • TFT
  • Super AMOLED
Screen size
  • 2.8" inch
  • 6.4" inch
Screen resolution
  • 480 x 640 px
  • 1080 x 2400 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
  • 64GB 4GB RAM
  • 128GB 4GB RAM
  • 128GB 6GB RAM
Memory card support
  • microSD (dedicated slot)
  • microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1530 mAh
  • Removable Li-Po
  • 5000 mAh
  • Non-removable Li-Po
Operating system OS
  • Microsoft Windows Mobile 6.1 Professional
  • Android 10.0; One UI 2.0
NFC
  • Super AMOLED
  • Yes (market/region dependent)
Headphone jack
  • panorama
  • Yes
Display
Display — specifications for DX900, Galaxy A31.
SpecificationDX900Galaxy A31
Touchscreen
  • resistive touchscreen
  • capacitive touchscreen
Display colors
  • 65K
  • 16M
Screen area
  • 24.3 cm2
  • 98.9 cm2
Screen format
  • 4:3 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 37.9%
  • 84.9%
PPI /points per inch/
  • 286 PPI
  • 411 PPI
Camera and Video
Camera and Video — specifications for DX900, Galaxy A31.
SpecificationDX900Galaxy A31
Rear camera, main
  • 3.15 MP
  • Single
  • 48 MP
  • Quad
Camera specs
  • 3.15 MP
  • AF
  • 48 MP
  • f/2.0
  • 26mm (wide)
  • 1/2.0"
  • 0.8µm
  • PDAF -8 MP
  • f/2.2
  • 13mm (ultrawide)
  • 1/4.0"
  • 1.12µm -5 MP
  • f/2.4
  • (macro) -5 MP
  • (depth)
Functions
  • Dual-LED flash
  • LED flash
  • panorama
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0.3 MP
  • Single
  • 20 MP
  • Single
Specifications
  • VGA videocall camera
  • 20 MP
  • f/2.2
  • (wide)
Performance
Performance — specifications for DX900, Galaxy A31.
SpecificationDX900Galaxy A31
Processor CPU
  • 533 MHz Samsung S3C 6410
  • Octa-core (2x2.0 GHz & 6x1.7 GHz)
General specs
General specs — specifications for DX900, Galaxy A31.
SpecificationDX900Galaxy A31
Release date
  • 2009
  • February
  • 2020
  • March 24
Colors
  • Black
  • Prism Crush Black
  • Prism Crush Blue
  • Prism Crush Red
  • Prism Crush White
Historical recorded price Legacy 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
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for DX900, Galaxy A31.
SpecificationDX900Galaxy A31
SIM card
  • Dual SIM (Mini-SIM)
  • Single SIM (Nano-SIM)Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 GSM 900 / 1800 / 1900 - SIM 2
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE (unspecified)
Speed
  • HSPA 7.2/0.384 Mbps
  • HSPA
  • LTE-A
GPRS
  • Class 10
  • Yes
Edge
  • Class 10
  • Yes
Wi-Fi
  • Wi-Fi 802.11 b/g/n
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • SiRF Star III chipset
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • miniUSB
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • microUSB 2.0
  • A2DP
  • 5.0
  • A2DP
  • LE
Harmful irradiation Unknown
  • SAR EU - 0.49 W/kg (head) 1.68 W/kg (body)
Music and Audio
Music and Audio — specifications for DX900, Galaxy A31.
SpecificationDX900Galaxy A31
Radio
  • panorama
Unknown
Others
  • Handwriting recognition
Unknown
Other features
Other features — specifications for DX900, Galaxy A31.
SpecificationDX900Galaxy A31
Dop
  • Sensors Accelerometer Pocket Office -Voice memo -MP3 player Also known as Acer Tempo DX900
  • Acer Tempo X960
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast charging 15W