BLU G9 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.

  • Display technology

    OLED versus LCD

    G9:
    LCD
    Galaxy A31:
    OLED
  • Weight

    G9: 20 g lighter

    G9:
    165 g
    Galaxy A31:
    185 g
  • Width

    G9: 1.3 mm narrower

    G9:
    71.8 mm
    Galaxy A31:
    73.1 mm
  • Rear camera layout

    G9:
    Dual
    Galaxy A31:
    Quad
  • Depth

    G9: 0.6 mm thinner

    G9:
    8 mm
    Galaxy A31:
    8.6 mm
  • Height

    G9: 3.9 mm shorter

    G9:
    155.4 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. G9

    Height:
    155.4 mm
    Width:
    71.8 mm
    Depth:
    8 mm
  2. 2. Galaxy A31

    Height:
    159.3 mm +3.9 mm versus G9
    Width:
    73.1 mm +1.3 mm versus G9
    Depth:
    8.6 mm +0.6 mm versus G9

Weight

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

  1. 1. G9

    165 g

  2. 2. Galaxy A31

    185 g

    +20 g versus G9

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. G9

    Screen diagonal:
    6.3 in
    Aspect ratio (height:width):
    19:9
    Approximate rectangular screen area:
    99.1 cm²
  2. 2. Galaxy A31

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

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 G9, Galaxy A31, compared at the same storage capacity.
StorageG9Galaxy A31
64 GB Unknown 4 GB RAM
128 GB Unknown 4 / 6 GB RAM Alternative RAM configurations
G9: Original memory entry

64 GB · 512GB 4GB

Practical features

Explicit Yes and No values are shown directly. Qualified or regional records retain their details. Unknown means the record is missing.

1. G9

NFC:
Unknown
Headphone jack:
Yes
Memory card support:
See details microSD · up to 128 GB

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. G9

    4000 mAh

  2. 2. Galaxy A31

    5000 mAh

    +1000 mAh versus G9

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. G92. Galaxy A31

Everyday essentials
Everyday essentials — specifications for G9, Galaxy A31.
SpecificationG9Galaxy A31
Dimensions (HxWxD)
  • 155.4 Х 71.8 Х 8 mm
  • 159.3 Х 73.1 Х 8.6 mm
Weight
  • 165 g
  • 185 g
Technology
  • IPS LCD
  • Super AMOLED
Screen size
  • 6.3" inch
  • 6.4" inch
Screen resolution
  • 720 x 1520 px
  • 1080 x 2400 px
Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
  • 64 GB
  • 512GB 4GB
  • 64GB 4GB RAM
  • 128GB 4GB RAM
  • 128GB 6GB RAM
Memory card support
  • microSD
  • up to 128 GB
  • microSDXC (dedicated slot)
Battery Capacity is not battery life. No endurance test is implied.
  • 4000 mAh
  • Non-removable Li-Po
  • 5000 mAh
  • Non-removable Li-Po
Operating system OS
  • Android 9.0 (Pie)
  • Android 10.0; One UI 2.0
Chipset
  • Mediatek MT6762 Helio P22 (12 nm)
Unknown
NFC Unknown
  • Yes (market/region dependent)
Headphone jack
  • Yes
  • Yes
Display
Display — specifications for G9, Galaxy A31.
SpecificationG9Galaxy A31
Touchscreen
  • capacitive touchscreen
  • capacitive touchscreen
Display colors
  • 16M
  • 16M
Screen area
  • 99.1 cm2
  • 98.9 cm2
Screen format
  • 19:9 (height:width)
  • 20:9 (height:width)
Screen to body ratio
  • 88.8%
  • 84.9%
PPI /points per inch/
  • 267 PPI
  • 411 PPI
Camera and Video
Camera and Video — specifications for G9, Galaxy A31.
SpecificationG9Galaxy A31
Rear camera, main
  • 13 MP
  • Dual
  • 48 MP
  • Quad
Camera specs
  • 13 MP
  • f/2.0
  • 1/3''
  • PDAF -2 MP
  • depth sensor
  • 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
  • LED flash
  • LED flash
  • panorama
  • HDR
Video
  • 1080p@30fps
  • 1080p@30fps
Front camera, selfie
  • 13 MP
  • Single
  • 20 MP
  • Single
Specifications
  • 13 MP
  • f/2.0
  • 1/3''
  • 20 MP
  • f/2.2
  • (wide)
Performance

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

Performance — specifications for G9, Galaxy A31.
SpecificationG9Galaxy A31
Processor CPU
  • Octa-core 2.0 GHz Cortex-A53
  • Octa-core (2x2.0 GHz & 6x1.7 GHz)
Graphics processor GPU
  • PowerVR GE8320
Unknown
Antutu 7 score *
  • 74326
Unknown
General specs
General specs — specifications for G9, Galaxy A31.
SpecificationG9Galaxy A31
Release date
  • 2019
  • May
  • 2020
  • March 24
Colors
  • Black
  • Blue
  • Prism Crush Black
  • Prism Crush Blue
  • Prism Crush Red
  • Prism Crush White
Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
  • 180 USD
Unknown
Battery life
  • Stand by time- Up to 750 h (2G) / Up to 650 h (3G) Talking time- Up to 30 h (2G) / Up to 24 h (3G)
Unknown
Communication and Connectivity
Communication and Connectivity — specifications for G9, Galaxy A31.
SpecificationG9Galaxy A31
SIM card
  • Dual SIM (Micro-SIM/Nano-SIM
  • dual stand-by)
  • Single SIM (Nano-SIM)Dual SIM (Nano-SIM
  • dual stand-by)
Network
  • Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 1700(AWS) / 1900 -4G - LTE band 1(2100)
  • 2(1900)
  • 3(1800)
  • 4(1700/2100)
  • 5(850)
  • 7(2600)
  • 8(900)
  • 12(700)
  • 13(700)
  • 17(700)
  • 28(700)
  • 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 42.2/11.5 Mbps
  • LTE-A (2CA) Cat6 300/50 Mbps
  • HSPA
  • LTE-A
GPRS
  • Yes
  • Yes
Edge
  • Yes
  • Yes
Wi-Fi
  • Wi-Fi 802.11 a/b/g/n
  • Wi-Fi Direct
  • hotspot
  • Wi-Fi 802.11 a/b/g/n/ac
  • dual-band
  • Wi-Fi Direct
  • hotspot
GPS
  • Yes
  • with A-GPS
  • Yes
  • with A-GPS
  • GLONASS
  • GALILEO
  • BDS
USB
  • 2.0
  • Type-C 1.0 reversible connector
  • 2.0
  • Type-C 1.0 reversible connector
  • USB On-The-Go
Bluetooth
  • 4.0
  • 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 G9, Galaxy A31.
SpecificationG9Galaxy A31
Radio
  • FM radio
Unknown
Other features
Other features — specifications for G9, Galaxy A31.
SpecificationG9Galaxy A31
Dop
  • Sensors Fingerprint (rear-mounted)
  • accelerometer
  • gyro
  • proximity
  • compass
  • Sensors Fingerprint (under display
  • optical)
  • accelerometer
  • gyro
  • proximity
  • compass - Fast charging 15W