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Samsung Galaxy M21 vs Samsung Galaxy M31 vs Samsung A8 Star

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Last Updated:  Wed, 2 Sep'20
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Samsung Galaxy M21
Samsung Galaxy M21
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Samsung Galaxy M31
Samsung Galaxy M31
×
Samsung Galaxy A8 Star
Samsung Galaxy A8 Star
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Samsung Galaxy M21
Samsung Galaxy M21
×
Samsung Galaxy M31
Samsung Galaxy M31
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Samsung Galaxy A8 Star
Samsung Galaxy A8 Star

Basic Information

  • User Rating
    8.5
  • Spec Score
    7.8
    7.9
    7.8

General

  • Bluetooth
    5.0, A2DP, LE
    5.0, A2DP, LE
    5.0, A2DP, LE

Design

  • Height
    6.26 inches
    6.29 inches
    6.39 inches
  • Width
    2.96 inches
    2.96 inches
    3.03 inches
  • Thickness
    0.35 inches
    0.35 inches
    0.30 inches
  • Weight
    188 g
    191 g
    191 g
  • Color
    Midnight Blue, Black
    Ocean Blue, Space Black, Red
    Black, White
  • Build
    Glass front (Gorilla Glass 3), plastic back, plastic frame
    Glass front (Gorilla Glass 3), plastic back, plastic frame
    Front/back glass, aluminum frame

Display

  • Screen Size
    6.4 inches
    6.4 inches
    6.3 inches
  • Display Type
    Super AMOLED capacitive touchscreen
    Super AMOLED capacitive touchscreen
    Super AMOLED capacitive touchscreen
  • Display Resolution
    1080 x 2340 pixels
    1080 x 2340 pixels
    1080 x 2220 pixels
  • Pixel Density
    403 ppi
    411 ppi
    392 ppi
  • Aspect Ratio
    19.5:9
    19.5:9
    18.5:9
  • Protection
    Corning Gorilla Glass 3
    Corning Gorilla Glass 3
  • Screen to Body Ratio
    84.20%
    84.1%
    80.60%

Performance

  • GPU
    Mali-G72 MP3
    Mali-G72 MP3
    Adreno 512
  • OS
    Android 10.0 One UI 2
    Android 10.0 One UI 2.0
    Android 8 (Oreo)
  • Chipset GP
    Exynos 9611 (10nm)
    Exynos 9611 (10nm)
    Qualcomm SDM660 Snapdragon 660 (14 nm)
  • CPU
    Octa-core (4x2.3 GHz Cortex-A73 and 4x1.7 GHz Cortex-A53)
    Octa-core (4x2.3 GHz Cortex-A73 4x1.7 GHz Cortex-A53)
    Octa-core (4x2.2 GHz Kryo 260 4x1.8 GHz Kryo 260)

Memory & Storage

  • RAM/Internal Storage
    64GB 4GB RAM, 128GB 6GB RAM
    64GB 6GB RAM, 128GB 6GB RAM
    64 GB, 4/6 GB RAM
  • Expandable Memory
    microSDXC (dedicated slot)
    microSDXC (dedicated slot)
    microSD, up to 1 TB (uses shared SIM slot)

Back Camera

  • Triple Camera
    48 MP, f/2.0, 26mm (wide), 1/2.0, 0.8 micron|8 MP, f/2.2, 12mm (ultrawide), 1/4.0, 1.12 micron|5 MP, f/2.2, (depth)
    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)
  • Autofocus
    PDAF
    PDAF
    PDAF
  • Back Camera Video
    4K30fps, 1080p30fps, gyro-EIS
    2160p30fps, 1080p30fps, gyro-EIS
    2160p30fps, 1080p30fps
  • Back Camera Features
    LED flash, panorama, HDR
    LED flash, panorama, HDR
    LED flash, panorama, HDR

Front Camera

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

Sound

  • HeadPhone Jack
    Yes
    Yes
    Yes
  • Loudspeaker
    Yes
    Yes
    Yes
  • Audio Features
    Dolby Atmos
    Dolby Atmos
    Active noise cancellation with dedicated mic|Dolby Atmos sound (headphones only)

Battery

  • Battery Capacity
    6000 mAh battery
    6000 mAh battery
    3700 mAh
  • User Replaceable
    Non-removable
    Non-removable
    Non-removable
  • Charging
    Fast charging 15W
    Fast battery charging 15W
    Fast battery charging 15W
  • Battery Type
    Li-Po
    Li-Po
    Li-Ion

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, BDS
    Yes, with A-GPS, GLONASS, BDS
    Yes, with A-GPS, GLONASS, BDS, GALILEO
  • Radio
    FM radio, RDS, recording
    FM radio, RDS, recording
    FM radio
  • USB
    2.0, Type-C 1.0 reversible connector
    2.0, Type-C 1.0 reversible connector
    2.0, Type-C 1.0 reversible connector
  • NFC
    No
    Yes
  • SIM
    Dual SIM (Nano-SIM, dual stand-by)
    Dual SIM (Nano-SIM, dual stand-by)
    Hybrid Dual SIM (Nano-SIM, dual stand-by)
  • Network Support
    GSM / HSPA / LTE
    GSM / HSPA / LTE
    GSM / CDMA / HSPA / LTE

Miscellaneous Features

  • Sensors
    Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
    Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
    Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass

Launch

  • Announced On
    2020, March 18
    2020, February 25
    2018, June
  • Status
    Available. Released 2020, March 23
    Available. Released 2020, March 5
    Available. Released 2018, June

Best Price

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