Samsung Galaxy M31 vs T-Mobile HD2

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

    HD2: 34 g lighter

    Galaxy M31:
    191 g
    HD2:
    157 g
  • Width

    HD2: 8.1 mm narrower

    Galaxy M31:
    75.1 mm
    HD2:
    67 mm
  • Screen diagonal

    HD2: 2.1 in smaller diagonal

    Galaxy M31:
    6.4 in
    HD2:
    4.3 in
  • Chipset

    Galaxy M31:
    Exynos 9611 (10nm)
    HD2:
    Qualcomm QSD8250 Snapdragon S1
  • Rear camera layout

    Galaxy M31:
    Triple
    HD2:
    Single
  • Depth

    Galaxy M31: 2.1 mm thinner

    Galaxy M31:
    8.9 mm
    HD2:
    11 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. Galaxy M31

    Height:
    159.2 mm +37.2 mm versus HD2
    Width:
    75.1 mm +8.1 mm versus HD2
    Depth:
    8.9 mm
  2. 2. HD2

    Height:
    122 mm
    Width:
    67 mm
    Depth:
    11 mm +2.1 mm versus Galaxy M31

Weight

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

  1. 1. Galaxy M31

    191 g

    +34 g versus HD2

  2. 2. HD2

    157 g

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. Galaxy M31

    Screen diagonal:
    6.4 in
    Aspect ratio (height:width):
    19.5:9
    Approximate rectangular screen area:
    100.5 cm²
  2. 2. HD2

    Screen diagonal:
    4.3 in
    Aspect ratio (height:width):
    5:3
    Approximate rectangular screen area:
    52.6 cm²

Galaxy M31 has approximately 91.1% more rectangular screen area than HD2.

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 Galaxy M31, HD2, compared at the same storage capacity.
StorageGalaxy M31HD2
64 GB 6 GB RAM Unknown
128 GB 6 GB RAM Unknown
HD2: Original memory entry

576 MB RAM · 1 GB 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. Galaxy M31

NFC:
See details Yes (market/region dependent)
Headphone jack:
Yes
Memory card support:
See details microSDXC (dedicated slot)

2. HD2

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 32 GB (dedicated slot) · 16 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. Galaxy M31

    6000 mAh

    +4770 mAh versus HD2

  2. 2. HD2

    1230 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. Galaxy M312. HD2

Everyday essentials
Everyday essentials — specifications for Galaxy M31, HD2.
SpecificationGalaxy M31HD2
Dimensions (HxWxD)
  • 159.2 Х 75.1 Х 8.9 mm
  • 122 Х 67 Х 11 mm
Weight
  • 191 g
  • 157 g
Technology
  • Super AMOLED
  • TFT
Screen size
  • 6.4" inch
  • 4.3" inch
Screen resolution
  • 1080 x 2340 px
  • 480 x 800 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64GB 6GB RAM
  • 128GB 6GB RAM
  • 576 MB RAM
  • 1 GB ROM
Memory card support
  • microSDXC (dedicated slot)
  • microSD
  • up to 32 GB (dedicated slot)
  • 16 GB included
Battery Capacity is not battery life. No endurance test is implied.
  • 6000 mAh
  • Non-removable Li-Po
  • 1230 mAh
  • Removable Li-Ion
Operating system OS
  • Android 10.0; One UI 2.0
  • Microsoft Windows Mobile 6.5 Professional; Sense UI
Chipset
  • Exynos 9611 (10nm)
  • Qualcomm QSD8250 Snapdragon S1
NFC
  • Yes (market/region dependent)
Unknown
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for Galaxy M31, HD2.
SpecificationGalaxy M31HD2
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 65K
Screen area
  • 100.5 cm2
  • 52.6 cm2
Screen format
  • 19.5:9 (height:width)
  • 5:3 (height:width)
Screen to body ratio
  • 84.1%
  • 64.4%
PPI /points per inch/
  • 403 PPI
  • 217 PPI
Screen protection
  • Corning Gorilla Glass 3
Unknown
Camera and Video
Camera and Video — specifications for Galaxy M31, HD2.
SpecificationGalaxy M31HD2
Rear camera, main
  • 64 MP
  • Triple
  • 5 MP
  • Single
Camera specs
  • 64 MP
  • f/1.8
  • 26mm (wide)
  • 1/1.72"
  • 0.8µm
  • PDAF -8 MP
  • f/2.2
  • 12mm (ultrawide)
  • 1/4.0"
  • 1.12µm -5 MP
  • f/2.4
  • 25mm (macro)
  • 1/5.0"
  • (depth)
  • 5 MP
  • AF
Functions
  • HDR
  • Dual-LED flash
Video
  • 2160p@30fps
  • 1080p@30fps
  • 480p@30fps
Front camera, selfie
  • 32 MP
  • Single
  • 0 MP,
Specifications
  • 32 MP
  • f/2.0
  • 26mm (wide)
  • 1/2.8''
  • 0.8µm
Unknown
Performance

Scores marked * are historical catalogue entries. Test conditions are unspecified; no new testing is implied.

Performance — specifications for Galaxy M31, HD2.
SpecificationGalaxy M31HD2
Processor CPU
  • Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
  • 1.0 GHz Scorpion
Graphics processor GPU
  • Mali-G72 MP3
  • Adreno 200
Antutu 8 score *
  • 194554
Unknown
General specs
General specs — specifications for Galaxy M31, HD2.
SpecificationGalaxy M31HD2
Release date
  • 2020
  • February 25
  • 2010
  • January
Colors
  • Ocean Blue
  • Space Black
  • Red
  • Black
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 200 EUR
  • 230 EUR
Battery life Unknown
  • Stand by time- Up to 480 h Talking time- Up to 6 h
Body build
  • Glass front (Gorilla Glass 3)
  • plastic back
  • plastic frame
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for Galaxy M31, HD2.
SpecificationGalaxy M31HD2
SIM card
  • Dual SIM (Nano-SIM
  • dual stand-by)
  • Mini-SIM
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE (unspecified)
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900
Speed
  • HSPA
  • LTE-A
  • HSPA 7.2/2 Mbps
GPRS
  • Yes
  • Class 12
Edge
  • Yes
  • Class 12
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 b/g
GPS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
  • Yes
  • with A-GPS; NaviPanel
USB
  • 2.0
  • Type-C 1.0 reversible connector
  • microUSB
Bluetooth
  • 5.0
  • A2DP
  • LE
  • 2.1
  • A2DP
Harmful irradiation
  • SAR - 0.52 W/kg (head) 0.69 W/kg (body) SAR EU - 0.52 W/kg (head) 0.69 W/kg (body)
Unknown
Music and Audio
Music and Audio — specifications for Galaxy M31, HD2.
SpecificationGalaxy M31HD2
Radio
  • FM radio
  • RDS
  • recording
  • Stereo FM radio
  • RDS
Other features
Other features — specifications for Galaxy M31, HD2.
SpecificationGalaxy M31HD2
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast battery charging 15W - Versions: SM-M315F/DS
  • Sensors Accelerometer
  • proximity
  • compass - MP3/WAV/WMA/eAAC+ player -MP4/WMV/H.264 player -Pocket Office -HTC Peep
  • HTC Footprints -T-mobile services: MobiTV
  • BLOCKBUSTER
  • Barnes & Nobl
  • Gogo Inflight Internet -Transformers & Transformers 2 movies preloaded -Voice memo -Predictive text input