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Oppo R15 Pro 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

      R15 Pro: 5 g lighter

      R15 Pro:
      180 g
      Galaxy A31:
      185 g

    • Width

      Galaxy A31: 2.1 mm narrower

      R15 Pro:
      75.2 mm
      Galaxy A31:
      73.1 mm

    • Rear camera layout

      R15 Pro:
      Dual
      Galaxy A31:
      Quad

    • Depth

      R15 Pro: 0.6 mm thinner

      R15 Pro:
      8 mm
      Galaxy A31:
      8.6 mm

    • Height

      R15 Pro: 2.8 mm shorter

      R15 Pro:
      156.5 mm
      Galaxy A31:
      159.3 mm

    • Release year

      R15 Pro:
      2018
      Galaxy A31:
      2020

    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. R15 Pro

      Height:
      156.5 mm
      Width:
      75.2 mm +2.1 mm versus Galaxy A31
      Depth:
      8 mm

    2. 2. Galaxy A31

      Height:
      159.3 mm +2.8 mm versus R15 Pro
      Width:
      73.1 mm
      Depth:
      8.6 mm +0.6 mm versus R15 Pro

    Weight

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

    1. 1. R15 Pro

      180 g

    2. 2. Galaxy A31

      185 g

      +5 g versus R15 Pro

    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. R15 Pro

      Screen diagonal:
      6.28 in
      Aspect ratio (height:width):
      19:9
      Approximate rectangular screen area:
      98.4 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 R15 Pro, Galaxy A31, compared at the same storage capacity.
    StorageR15 ProGalaxy A31
    64 GB Not recorded 4 GB RAM
    128 GB Recorded for all phones 6 GB RAM 4 / 6 GB RAM Alternative RAM configurations

    Practical features

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

    1. R15 Pro

    NFC:
    Yes
    Headphone jack:
    Yes
    Memory card support:
    See details microSD · up to 256 GB (uses SIM 2 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. R15 Pro

      3430 mAh

    2. 2. Galaxy A31

      5000 mAh

      +1570 mAh versus R15 Pro

    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. R15 Pro2. Galaxy A31

    Everyday essentials
    Everyday essentials — specifications for R15 Pro, Galaxy A31.
    SpecificationR15 ProGalaxy A31
    Dimensions (HxWxD)
    • 156.5 Х 75.2 Х 8 mm
    • 159.3 Х 73.1 Х 8.6 mm
    Weight
    • 180 g
    • 185 g
    Technology
    • AMOLED
    • Super AMOLED
    Screen size
    • 6.28" inch
    • 6.4" inch
    Screen resolution
    • 1080 x 2280 px
    • 1080 x 2400 px
    Internal memory Recorded storage / RAM variants. Entries are alternatives, not a combined maximum. Ambiguous formats stay as recorded.
    • 128 GB
    • 6 GB RAM
    • 64GB 4GB RAM
    • 128GB 4GB RAM
    • 128GB 6GB RAM
    Memory card support
    • microSD
    • up to 256 GB (uses SIM 2 slot)
    • microSDXC (dedicated slot)
    Battery Capacity is not battery life. No endurance test is implied.
    • 3430 mAh
    • Non-removable Li-Po
    • 5000 mAh
    • Non-removable Li-Po
    Operating system OS
    • Android 8.1 (Oreo); ColorOS 5
    • Android 10.0; One UI 2.0
    Chipset
    • Qualcomm SDM660 Snapdragon 660 (14 nm)
    		 Unknown
    NFC
    • Yes
    • Yes (market/region dependent)
    Headphone jack
    • Yes
    • Yes
    Display
    Display — specifications for R15 Pro, Galaxy A31.
    SpecificationR15 ProGalaxy A31
    Touchscreen
    • capacitive touchscreen
    • capacitive touchscreen
    Display colors
    • 16M
    • 16M
    Screen area
    • 98.9 cm2
    • 98.9 cm2
    Screen format
    • 19:9 (height:width)
    • 20:9 (height:width)
    Screen to body ratio
    • 84.1%
    • 84.9%
    PPI /points per inch/
    • 401 PPI
    • 411 PPI
    Screen protection
    • Corning Gorilla Glass 5
    		 Unknown
    Camera and Video
    Camera and Video — specifications for R15 Pro, Galaxy A31.
    SpecificationR15 ProGalaxy A31
    Rear camera, main
    • 16 MP
    • Dual
    • 48 MP
    • Quad
    Camera specs
    • 16 MP
    • f/1.7
    • 25mm (wide)
    • 1/2.6''
    • 1.22µm
    • PDAF -20 MP
    • 1/2.8''
    • 1.0µm
    • 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
    • HDR
    • panorama
    • LED flash
    • panorama
    • HDR
    Video
    • 1080p@30fps
    • 1080p@30fps
    Front camera, selfie
    • 20 MP
    • Single
    • 20 MP
    • Single
    Specifications
    • 20 MP
    • f/2.0
    • 20mm
    • 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 R15 Pro, Galaxy A31.
    SpecificationR15 ProGalaxy A31
    Processor CPU
    • Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
    • Octa-core (2x2.0 GHz & 6x1.7 GHz)
    Graphics processor GPU
    • Adreno 512
    		 Unknown
    Antutu 7 score *
    • 146822
    		 Unknown
    General specs
    General specs — specifications for R15 Pro, Galaxy A31.
    SpecificationR15 ProGalaxy A31
    Release date
    • 2018
    • March
    • 2020
    • March 24
    Colors
    • Ceramic Black
    • Dream Mirror Red
    • Prism Crush Black
    • Prism Crush Blue
    • Prism Crush Red
    • Prism Crush White
    Historical recorded price Legacy catalogue value; date unknown. Not a current offer.
    • 510 EUR
    		 Unknown
    Body build
    • Front glass
    • aluminum frame
    • ceramic back
    		 Unknown
    Communication and Connectivity
    Communication and Connectivity — specifications for R15 Pro, Galaxy A31.
    SpecificationR15 ProGalaxy A31
    SIM card
    • Hybrid Dual 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 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100)
    • 2(1900)
    • 3(1800)
    • 4(1700/2100)
    • 5(850)
    • 7(2600)
    • 8(900)
    • 12(700)
    • 17(700)
    • 34(2000)
    • 38(2600)
    • 39(1900)
    • 40(2300)
    • 41(2500)
    • 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 42.2/5.76 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/ac
    • dual-band
    • WiFi Direct
    • hotspot
    • Wi-Fi 802.11 a/b/g/n/ac
    • dual-band
    • Wi-Fi Direct
    • hotspot
    GPS
    • Yes
    • with A-GPS
    • GLONASS
    • Yes
    • with A-GPS
    • GLONASS
    • GALILEO
    • BDS
    USB
    • microUSB 2.0
    • USB On-The-Go
    • 2.0
    • Type-C 1.0 reversible connector
    • USB On-The-Go
    Bluetooth
    • 5.0
    • A2DP
    • LE
    • EDR
    • 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 R15 Pro, Galaxy A31.
    SpecificationR15 ProGalaxy A31
    Radio
    • No
    		 Unknown
    Others
    • Active noise cancellation with dedicated mic
    		 Unknown
    Other features
    Other features — specifications for R15 Pro, Galaxy A31.
    SpecificationR15 ProGalaxy A31
    Dop
    • Sensors Fingerprint (rear-mounted)
    • accelerometer
    • gyro
    • proximity
    • compass - Fast battery charging: VOOC Flash Charge 5V/4A - IP67 dust/water resistant (up to 1m for 30 mins) - Also known as R15 Dream Mirror Edition in China with slightly different dimensions
    • Sensors Fingerprint (under display
    • optical)
    • accelerometer
    • gyro
    • proximity
    • compass - Fast charging 15W

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