O2 XDA II mini 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

    XDA II mini: 35 g lighter

    XDA II mini:
    150 g
    Galaxy A31:
    185 g
  • Width

    XDA II mini: 15.1 mm narrower

    XDA II mini:
    58 mm
    Galaxy A31:
    73.1 mm
  • Screen diagonal

    XDA II mini: 3.6 in smaller diagonal

    XDA II mini:
    2.8 in
    Galaxy A31:
    6.4 in
  • Rear camera layout

    XDA II mini:
    Single
    Galaxy A31:
    Quad
  • Depth

    Galaxy A31: 9.4 mm thinner

    XDA II mini:
    18 mm
    Galaxy A31:
    8.6 mm
  • Height

    XDA II mini: 51.3 mm shorter

    XDA II mini:
    108 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. XDA II mini

    Height:
    108 mm
    Width:
    58 mm
    Depth:
    18 mm +9.4 mm versus Galaxy A31
  2. 2. Galaxy A31

    Height:
    159.3 mm +51.3 mm versus XDA II mini
    Width:
    73.1 mm +15.1 mm versus XDA II mini
    Depth:
    8.6 mm

Weight

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

  1. 1. XDA II mini

    150 g

  2. 2. Galaxy A31

    185 g

    +35 g versus XDA II mini

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. XDA II mini

    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 XDA II mini.

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 XDA II mini, Galaxy A31, compared at the same storage capacity.
StorageXDA II miniGalaxy A31
64 GB Unknown 4 GB RAM
128 GB Unknown 4 / 6 GB RAM Alternative RAM configurations
XDA II mini: Original memory entry

64 MB RAM · 64 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. XDA II mini

NFC:
Unknown
Headphone jack:
No
Memory card support:
See details MMC/SDIO

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. XDA II mini

    1200 mAh

  2. 2. Galaxy A31

    5000 mAh

    +3800 mAh versus XDA II mini

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. XDA II mini2. Galaxy A31

Everyday essentials
Everyday essentials — specifications for XDA II mini, Galaxy A31.
SpecificationXDA II miniGalaxy A31
Dimensions (HxWxD)
  • 108 Х 58 Х 18 mm
  • 159.3 Х 73.1 Х 8.6 mm
Weight
  • 150 g
  • 185 g
Technology
  • TFT
  • Super AMOLED
Screen size
  • 2.8" inch
  • 6.4" inch
Screen resolution
  • 240 x 320 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 MB RAM
  • 64 MB ROM
  • 64GB 4GB RAM
  • 128GB 4GB RAM
  • 128GB 6GB RAM
Memory card support
  • MMC/SDIO
  • microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 1200 mAh
  • Removable Li-Ion
  • 5000 mAh
  • Non-removable Li-Po
Operating system OS
  • Microsoft Windows Mobile 2003 SE PocketPC
  • Android 10.0; One UI 2.0
NFC Unknown
  • Yes (market/region dependent)
Headphone jack
  • No
  • Yes
Display
Display — specifications for XDA II mini, Galaxy A31.
SpecificationXDA II miniGalaxy 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
  • 38.8%
  • 84.9%
PPI /points per inch/
  • 143 PPI
  • 411 PPI
Camera and Video
Camera and Video — specifications for XDA II mini, Galaxy A31.
SpecificationXDA II miniGalaxy A31
Rear camera, main
  • 1.3 MP
  • Single
  • 48 MP
  • Quad
Camera specs
  • 1.3 MP
  • 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 Unknown
  • LED flash
  • panorama
  • HDR
Video
  • Yes
  • 1080p@30fps
Front camera, selfie
  • 0 MP,
  • 20 MP
  • Single
Specifications Unknown
  • 20 MP
  • f/2.2
  • (wide)
Performance
Performance — specifications for XDA II mini, Galaxy A31.
SpecificationXDA II miniGalaxy A31
Processor CPU
  • Intel PXA272 416 MHz
  • Octa-core (2x2.0 GHz & 6x1.7 GHz)
General specs
General specs — specifications for XDA II mini, Galaxy A31.
SpecificationXDA II miniGalaxy A31
Release date
  • 2004
  • Q4
  • 2020
  • March 24
Colors
  • Stylish black
  • Silver
  • Prism Crush Black
  • Prism Crush Blue
  • Prism Crush Red
  • Prism Crush White
Battery life
  • Stand by time- Up to 180 h Talking time- Up to 5 h
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for XDA II mini, Galaxy A31.
SpecificationXDA II miniGalaxy A31
SIM card
  • Mini-SIM
  • Single SIM (Nano-SIM)Dual SIM (Nano-SIM
  • dual stand-by)
Network Unknown
  • 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 Unknown
  • HSPA
  • LTE-A
GPRS
  • Class 10
  • Yes
Edge
  • No
  • Yes
Wi-Fi
  • No
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • No
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • Proprietary
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • Yes
  • 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 XDA II mini, Galaxy A31.
SpecificationXDA II miniGalaxy A31
Radio
  • No
Unknown
Others
  • Handwriting recognition
Unknown
Other features
Other features — specifications for XDA II mini, Galaxy A31.
SpecificationXDA II miniGalaxy A31
Dop
  • Infrared port - Pocket Office -Voice memo -MP3/AAC player - Produced by HTC. Functionally identical to Qtek S100
  • i-mate JAM and T-Mobile MDA Compact.
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast charging 15W