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Samsung Galaxy A51 5G US Unlocked (SM-A516U1) vs Samsung Galaxy S21 5G US Unlocked (SM-G991U1)

GENERAL INFORMATION

PHYSICAL SPECS

  • Dimensions
    73.6 x 158.9 x 8.7 mm 71.2 x 151.7 x 7.9mm
  • Weight
    187 g 171g
  • SIM Card
    Single SIM Single / Dual SIM
  • SIM Card Size
    Nano-SIM (4FF) Nano-SIM (4FF)
  • Ingress Protection Rating (IP Rate)
    IP68 Dust / Water resistant (up to 1.5m for 30 mins)

OPERATING SYSTEM

  • Platform
    Android Android
  • Installed OS Version
    Android 10 Android 11, One UI 3.1

NETWORK

  • Supported Network
    2G, 3G, 4G / LTE, 5G 2G, 3G, 4G, 5G

DISPLAY

  • Technology (Main Display)
    Super AMOLED Dynamic AMOLED 2X
  • Size (Main Display)
    6.5 inches 6.2 inches
  • Color Depth (Main Display)
    16M Colors 16M Colors
  • Resolution (Main Display)
    FHD+ 1080×2400 Pixels Flat FHD+ 2400 x 1080 Pixels
  • Pixel Density
    405 PPI 421ppi
  • More Display Features
    Infinity-O Display, Corning Gorilla Glass 3 Protection Infinity-O Display, HDR10+ certified, Adaptive 120Hz refresh rate (48~120Hz), Eye Comfort Shield, Corning Gorilla Glass Victus, Always-on display.

PROCESSOR

  • CPU Type
    Exynos 980 Qualcomm SM8350 Snapdragon 888
  • CPU Speed
    2x2.2 GHz Cortex-A77 & 6x1.8 GHz Cortex A55 1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680
  • Cores
    8 Cores (Octa-Core) 8 Cores (Octa-Core)
  • GPU
    Mali-G76 MP5 Adreno 660

MEMORY

  • RAM Size
    6GB 8GB
  • ROM Size
    128GB 128GB / 256GB
  • External Memory Support
    MicroSD Slot (up to 1TB) No

SENSORS

  • Built In Sensors
    Fingerprint (Under Display, Optical), Accelerometer, Gyro, Proximity, Compass Ultrasonic Fingerprint sensor, Accelerometer, Barometer, Gyro sensor, Geomagnetic sensor, Hall sensor, Proximity sensor, Ambient Light Sensor

AUDIO and VIDEO

  • Audio Playing Format
    MP3, M4A, 3GA, AAC, OGG, OGA, WAV, WMA, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA MP3, M4A, 3GA, AAC, OGG, OGA, WAV, WMA, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA, APE, DSF, DFF
  • Video Playing Format
    MP4, M4V, 3GP, 3G2, WMV, ASF, AVI, FLV, MKV, WEBM MP4, M4V, 3GP, 3G2, WMV, ASF, AVI, FLV, MKV, WEBM
  • Video Recording Resolution
    UHD 8K (7680 x 4320 Pixels) @24fps
  • Video Playing Resolution
    UHD 8K (7680 x 4320 Pixels) @60fps

CAMERA

  • Rear Camera
    Quad Triple
  • Front Camera
    Single Single
  • Rear Camera - Resolution
    48MP + 12MP Ultra-Wide + 5MP Depth Sensor + 5MP Macro 64MP Telephoto + 12MP Wide + 12MP Ultra Wide
  • Front Camera - Resolution
    32.0MP 10MP
  • Rear Camera - Flash
    Yes Yes
  • Front Camera - Flash
    No No
  • Rear Camera - Auto Focus
    Yes Yes
  • Front Camera - Auto Focus
    Yes
  • Rear Camera - F Number
    F2.0, F2.2, F2.2, F2.4 F2.0, F1.8, F2.2
  • Front Camera - F Number
    F2.2 F2.2
  • Optical Image Stabilizer (OIS)
    Yes Yes (Rear Camera only)
  • Camera Features
    - Panorama.
    - HDR.
    - 30X Space Zoom.
    - Slow Motion: 960fps @HD, 240fps @FHD.
    - Super Steady video.
    - Panorama.
    - Auto-HDR.

CONNECTIVITY

  • ANT+
    Yes Yes
  • USB Version
    USB v2.0 V3.2
  • USB Interface
    USB Type-C USB Type-C
  • Earjack
    3.5mm Stereo No
  • Bluetooth Version
    Bluetooth v5.0 Bluetooth v5.0
  • Wi-Fi
    Wi-Fi a/b/g/n/ac 802.11 a/b/g/n/ac/ax 2.4 G + 5 GHz, HE80, MIMO, 1024-QAM
  • Wi-Fi Direct
    Yes Yes
  • NFC
    Yes Yes
  • Location Technology
    GPS, Glonass, Beidou, Galileo GPS, Glonass, Beidou, Galileo
  • Mobile High-Definition Link (MHL)
    No No
  • PC Sync
    Samsung Smart Switch Samsung Smart Switch

BATTERY

  • Standard Battery Capacity (mAh)
    4,500 mAh 4000mAh
  • Removable
    No No
  • Fast Charging Support
    Yes Yes
  • Talk Time
    Up to 23H Up to 30H (4G LTE)
  • Stand-By
    Up to 11.3 Days
  • Audio Playback Time (Hours)
    Up to 72H

FEATURES

  • More Features
    - 5G Networks Support.
    - Fast Wired Charging (15 watts).
    - Infinity-O Display.
    - Dolby Atmos (wired audio).
    - Facial Recognition.
    - In-Display Optical Fingerprint Sensor.
    - Samsung Pay.
    - 5G Support.
    - Samsung Pay.
    - Wireless: Smart View (screen mirroring 1080p at 30 fps).
    - Wired: supports DisplayPort over USB type-C. Supports video out when connecting via HDMI Adapter. (DisplayPort 4K UHD at 60 fps)(DisplayPort 4K UHD at 60 fps).
    - Fast charging 25W.
    - USB Power Delivery 3.0.
    - Fast Qi/PMA wireless charging 15W.
    - Reverse wireless charging 4.5W.

Disclaimer Notice:

  • Disclaimer Notice:
    These specifications and features are collected from Samsung official websites and world trusted sources. But even thus We can not guarantee that the information on this page is 100% correct. So If any particular specification is vital to you, we always recommend checking with the phone seller before buying the wanted device. These specifications and features are collected from Samsung official websites and world trusted sources. But even thus We can not guarantee that the information on this page is 100% correct. So If any particular specification is vital to you, we always recommend checking with the phone seller before buying the wanted device.