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Samsung Galaxy A51 vs Samsung Galaxy M31 vs Redmi K20 Pro

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Last Updated:  Wed, 26 Aug'20
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Samsung Galaxy A51
Samsung Galaxy A51
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Samsung Galaxy M31
Samsung Galaxy M31
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Xiaomi Redmi K20 Pro
Xiaomi Redmi K20 Pro
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Samsung Galaxy A51
Samsung Galaxy A51
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Samsung Galaxy M31
Samsung Galaxy M31
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Xiaomi Redmi K20 Pro
Xiaomi Redmi K20 Pro

General

  • Bluetooth
    5.0, A2DP, LE
    5.0, A2DP, LE
    5.0, A2DP, LE, aptX HD

Design

  • Height
    6.24 inches
    6.29 inches
    6.17 inches
  • Width
    2.90 inches
    2.96 inches
    2.93 inches
  • Thickness
    0.31 inches
    0.35 inches
    0.35 inches
  • Weight
    172 g
    191 g
    191 g
  • Color
    Prism Crush Black, Prism Crush White, Prism Crush Blue
    Ocean Blue, Space Black, Red
    Carbon black, Flame Red, Glacier Blue, Pearl White
  • Build
    Glass front (Gorilla Glass 3), plastic back, plastic frame
    Glass front (Gorilla Glass 3), plastic back, plastic frame
    Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame

Display

  • Screen Size
    6.5 inches
    6.4 inches
    6.39 inches
  • Display Type
    Super AMOLED capacitive touchscreen
    Super AMOLED capacitive touchscreen
    Super AMOLED capacitive touchscreen
  • Display Resolution
    1080 x 2400 pixels
    1080 x 2340 pixels
    1080 x 2340 pixels
  • Pixel Density
    405 ppi
    411 ppi
    403 ppi
  • Aspect Ratio
    20:9
    19.5:9
    19.5:9
  • Protection
    Corning Gorilla Glass 3
    Corning Gorilla Glass 3
    Corning Gorilla Glass 5
  • Screen to Body Ratio
    87.4%
    84.1%
    86.1%

Performance

  • OS
    Android 10, One UI 2.1
    Android 10.0 One UI 2.0
    Android 9.0 (Pie) MIUI 10
  • GPU
    Mali-G72 MP3
    Mali-G72 MP3
    Adreno 640
  • Chipset GP
    Exynos 9611 (10nm)
    Exynos 9611 (10nm)
    Qualcomm SM8150 Snapdragon 855 (7 nm)
  • CPU
    Octa-core (4x2.3 GHz Cortex-A73 4x1.7 GHz Cortex-A53)
    Octa-core (4x2.3 GHz Cortex-A73 4x1.7 GHz Cortex-A53)
    Octa-core (1x2.84 GHz Kryo 485 3x2.42 GHz Kryo 485 4x1.78 GHz Kryo 485)

Memory & Storage

  • RAM/Internal Storage
    128GB 6GB RAM, 128GB 8GB RAM
    64GB 6GB RAM, 128GB 6GB RAM
    128GB 6GB RAM, 256GB 8GB RAM
  • Expandable Memory
    microSDXC (dedicated slot)
    microSDXC (dedicated slot)
    No

Back Camera

  • Quad Camera
    48 MP, f/2.0, 26mm (wide), 1/2.0, 0.8 micron|12 MP, f/2.2, 12mm (ultrawide)|5 MP, f/2.4, 25mm (macro), 1/5.0, 1.12 micron|5 MP, f/2.2, (depth)
  • Autofocus
    PDAF
    PDAF
    PDAF, Laser AF, PDAF, Laser AF
  • Back Camera Video
    4K30fps, 1080p30/120fps; gyro-EIS
    2160p30fps, 1080p30fps, gyro-EIS
    4K30/60fps, 1080p30/120/240fps, 1080p960fps
  • Back Camera Features
    LED flash, panorama, HDR
    LED flash, panorama, HDR
    Dual-LED flash, HDR, panorama
  • Triple Camera
    64 MP, f/1.8, 26mm (wide), 1/1.72, 0.8 micron|8 MP, f/2.2, 12mm (ultrawide), 1/4.0, 1.12 micron|5 MP, f/2.2, 25mm (macro), 1/5.0, 1.12 micron|5 MP, f/2.2, (depth)
    48 MP, f/1.8, 26mm (wide), 1/2, 0.8 micron|8 MP, f/2.4, 53mm (telephoto), 1/4, 1.12 micron, 2x optical zoom|13 MP, f/2.4, 12mm (ultrawide), 1/3, 1.12 micron

Front Camera

  • Single Camera
    32 MP, f/2.2, 26mm (wide), 1/2.8, 0.8 micron
    32 MP, f/2.0, 26mm (wide), 1/2.8, 0.8 micron
    Motorized pop-up 20 MP, f/2.2, 0.8 micron
  • Front Camera Video
    1080p30fps
    1080p30fps
    1080p30fps
  • Front Camera Features
    HDR
    HDR
    HDR

Sound

  • HeadPhone Jack
    Yes
    Yes
    Yes
  • Loudspeaker
    Yes
    Yes
    Yes
  • Audio Features
    Dolby Atmos
    Dolby Atmos
    24-bit/192kHz audio|Active noise cancellation with dedicated mic

Battery

  • Battery Capacity
    4000 mAh battery
    6000 mAh battery
    4000 mAh battery
  • User Replaceable
    Non-removable
    Non-removable
    Non-removable
  • Talk Time
    Up to 32 (Hours 4G LTE)
  • Music Time
    Up to 87 (Hours)
  • Charging
    Fast charging 15W
    Fast battery charging 15W
    Fast charging 27W|Quick Charge 4+
  • Battery Type
    Li-Po
    Li-Po
    Li-Po

Communications

  • WLAN
    Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
    Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
    Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
  • GPS
    Yes, with A-GPS, GLONASS, GALILEO, BDS
    Yes, with A-GPS, GLONASS, BDS
    Yes, with dual-band A-GPS, GLONASS, BDS, GALILEO
  • Radio
    FM radio
    FM radio, RDS, recording
    Yes
  • USB
    2.0, Type-C 1.0 reversible connector, USB On-The-Go
    2.0, Type-C 1.0 reversible connector
    2.0, Type-C 1.0 reversible connector, USB On-The-Go
  • NFC
    Yes
    Yes
  • SIM
    Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
    Dual SIM (Nano-SIM, dual stand-by)
    Dual SIM (Nano-SIM, dual stand-by)
  • Network Support
    GSM / HSPA / LTE
    GSM / HSPA / LTE
    GSM / HSPA / LTE

Miscellaneous Features

  • Sensors
    Fingerprint (under display, Accelerometer, Fingerprint Sensor, Gyro Sensor, Geomagnetic Sensor, Hall Sensor, Light Sensor, Virtual Proximity Sensing
    Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
    Fingerprint (under display, optical), accelerometer, gyro, proximity, compass

Launch

  • Announced On
    2019, December
    2020, February 25
    2019, May 28
  • Status
    Available. Released 2020, January 29
    Available. Released 2020, March 5
    Available. Released 2019, June 01

Best Price

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