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    Galaxy M31s vs Galaxy M51

    General Information

    • Model Name

      Galaxy M31s

      Galaxy M51

    • Model type

      Bar

      Bar

    • Colors

      Blue (Mirage Blue)
      Black (Mirage Black)

      Black ()
      White ()

    • Announced

      2020, July

      2020, August

    • Released

      2020, August

      2020, September

    Physical specifications

    • Dimensions

      Bar: 159.3 x 74.4 x 9.3 mm

      Bar: 163.9 x 76.3 x 9.5 mm

    • Weights

      203g

      213g

    Operating system

    • Operating system

      Android 10

      Android 10

    • One UI version

      2.5

      2.1

    Networks

    • SIM

      Dual SIM model

      Dual SIM model

    • SIM card sizes

      Nano-SIM (4FF)

      Nano-SIM (4FF)

    • Networks

      2G
      3G
      4G

      2G
      3G
      4G

    • eSIM support

      No

      No

    Display

    • Kind

      Main Display

    • Name

      Infinity-O Display

      Infinity-O Display

    • Technology

      Super AMOLED Display

      Super AMOLED Plus

    • Size

      6.5 inch / 165.1 mm

      6.7 inch / 170.18 mm

    • Resolution

      FHD+ / 2400x1080 pixels

      FHD+ / 2400x1080 pixels

    • Pixel density

      405 PPI

    • Screen to body ratio

      ~91.0%

      ~%

    Processors

    Memory

    • RAM/ROM sizes

      6 GB RAM with 128 GB ROM
      8 GB RAM with 128 GB ROM

      6 GB RAM with 128 GB ROM
      8 GB RAM with 128 GB ROM

    • External memory support

      Yes

      Yes

    • External memory support maximum

      512 GB

      512 GB

    Sensors

    • Accelerometer

      Yes

      Yes

    • Fingerprint sensor

      Yes

      Yes

    • Geomagnetic sensor

      Yes

      Yes

    • Gyro sensor

      Yes

      Yes

    • Hall sensor

      No

      Yes

    • Light Sensor

      Yes

      No

    • Proximity sensor

      No

      Yes

    • RGB Light sensor

      No

      Yes

    • Virtual Proximity Sensing

      Yes

      No

    Video

    • Max. Video Recording Resolution

      4K UHD video recording at 30 fps (3840x2160)

      4K UHD video recording at 30 fps (3840x2160)

    • External memory support

      Yes

      Yes

    • External memory support maximum

      512 GB

      512 GB

    Front Camera

    • Flash

      No

      No

    • Kind

      Selfie Camera

    • Megapixels

      32MP

      32MP

    • Aperture

      F2.0

      F2.2

    • Pixel size

      0.8µm

    Rear Camera

    • Flash

      Yes

      Yes

    • Digital Zoom

      Yes

      Yes

    • Kind

      Wide-angle Camera

    • Megapixels

      64MP

      64MP

    • Aperture

      F1.8

      F1.8

    • Pixel size

      0.8µm

    • Field of view

      81°

    • Extras

      PDAF

    • Kind

      Ultra Wide Camera

    • Megapixels

      12MP

      12MP

    • Aperture

      F2.2

      F2.2

    • Field of view

      123˚

      123˚

    • Kind

      Macro Camera

    • Megapixels

      5MP

      5MP

    • Aperture

      F2.4

      F2.4

    • Kind

      Depth Camera

    • Megapixels

      5MP

      5MP

    • Aperture

      F2.4

      F2.4

    Connectivity

    • ANT+

      No

      Yes

    • USB version

      Type C

      Type C

    • 3.5mm Headphonejack

      Yes

      Yes

    • Location technology

      BeiDou
      GPS
      Glonass
      Galileo

      GPS
      Galileo
      Glonass
      BeiDou

    • Wi-Fi

      Yes

      Yes

    • Wi-Fi Direct

      Yes

      Yes

    • NFC

      Yes

      Yes

    • Bluetooth Version

      5.0

      5.0

    Battery

    • Standard battery capacity

      6000mAh

      7000mAh

    • Removable battery

      No

      No

    • Wired fast charging

      Yes

      Yes

    • Wired fast charging watt

      25

      25