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Samsung Galaxy A51 US Unlocked (SM-A515U1) vs Samsung Galaxy S21 Ultra 5G US Unlocked (SM-G998U1)

GENERAL INFORMATION

PHYSICAL SPECS

  • Dimensions
    158.5 x 73.6 x 7.9 mm 75.6 x 165.1 x 8.9mm
  • Weight
    172 g 229g
  • 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 2G, 3G, 4G, 5G

DISPLAY

  • Technology (Main Display)
    Super AMOLED Dynamic AMOLED 2X
  • Size (Main Display)
    6.5 inches (164.0mm) 6.8 inches
  • Color Depth (Main Display)
    16M Colors 16M Colors
  • Resolution (Main Display)
    FHD+ 1080 × 2400 Pixels Edge QHD+ 3200 x 1440 Pixels
  • Pixel Density
    405 PPI 515ppi
  • S Pen Support
    Yes
  • More Display Features
    Infinity-O Display Infinity-O Display, HDR10+ certified, Adaptive 120Hz refresh rate (10~120Hz), Eye Comfort Shield, Corning Gorilla Glass Victus, Always-on display.

PROCESSOR

  • CPU Type
    Exynos 9611 Qualcomm SM8350 Snapdragon 888
  • CPU Speed
    4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53 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-G72 MP3 Adreno 660

MEMORY

  • RAM Size
    4GB 12GB / 16GB
  • ROM Size
    128GB 128GB / 256GB / 512GB
  • External Memory Support
    MicroSD (Up to 512GB) No

SENSORS

  • Built In Sensors
    Accelerometer, Fingerprint Sensor, Gyro Sensor, Geomagnetic Sensor, Hall Sensor, Light Sensor, Virtual Proximity Sensing 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 4K (3840 x 2160 Pixels) @30fps UHD 8K (7680 x 4320 Pixels) @24fps
  • Video Playing Resolution
    UHD 4K (3840 x 2160 Pixels) @120fps UHD 8K (7680 x 4320 Pixels) @60fps

CAMERA

  • Rear Camera
    Quad Quad
  • Front Camera
    Single Single
  • Rear Camera - Resolution
    48MP + 12MP Ultra-Wide + 5MP Depth Sensor + 5MP Macro 108MP Wide, 10MP Periscope Telephoto, 10MP Telephoto, 12MP Ultra Wide
  • Front Camera - Resolution
    32.0MP 40MP
  • Rear Camera - Flash
    Yes Yes
  • Front Camera - Flash
    No No
  • Rear Camera - Auto Focus
    Yes Yes
  • Front Camera - Auto Focus
    No Yes
  • Rear Camera - F Number
    F2.0, F2.2, F2.2, F2.4 F1.8, F4.9, F2.4, F2.2
  • Front Camera - F Number
    F2.2 F2.2
  • Optical Image Stabilizer (OIS)
    No Yes (Front and Rear Camera)
  • Camera Features
    - Panorama.
    - HDR.
    - Main Camera Digital Zoom up to 8x.
    - Slow Motion 240fps @HD.
    - 100X Space Zoom.
    - Slow Motion: 960fps @HD, 240fps @FHD.
    - Laser AF Sensor.
    - Panorama.
    - Auto-HDR

CONNECTIVITY

  • ANT+
    Yes Yes
  • USB Version
    USB 2.0 V3.2
  • USB Interface
    USB Type-C USB Type-C
  • Earjack
    3.5mm Stereo No
  • Bluetooth Version
    Bluetooth v5.0 (LE up to 2 Mbps) Bluetooth v5.2
  • Wi-Fi
    802.11 a/b/g/n/ac 2.4G+5GHz, VHT80 802.11 a/b/g/n/ac/ax 2.4G+5GHz+6GHz, HE160, MIMO, 1024-QAM
  • Wi-Fi Direct
    Yes Yes
  • NFC
    Yes Yes
  • Location Technology
    GPS, Glonass, Beidou, Galileo A-GPS, GLONASS, BDS, GALILEO
  • Mobile High-Definition Link (MHL)
    No No
  • PC Sync
    Samsung Smart Switch Samsung Smart Switch

BATTERY

  • Standard Battery Capacity (mAh)
    4,000 mAh 5000mAh
  • Removable
    No No
  • Fast Charging Support
    Yes Yes
  • Talk Time
    Up to 28H (4G LTE) Up to 37H (4G LTE)
  • Stand-By
    Up to 11.9 Days
  • Audio Playback Time (Hours)
    Up to 85H Up to 81H
  • Video Playback Time (Hours)
    Up to 19H
  • Internet Usage Time(LTE) (Hours)
    Up to 15H
  • Internet Usage Time(Wi-Fi) (Hours)
    Up to 16H

FEATURES

  • More Features
    - 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.