Samsung Galaxy A51 vs Samsung Galaxy S21 Ultra 5G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date December 16, 2019 January 29, 2021
Release Year 2019 2021

Physical

Volume 92.16 cm³ 111.09 cm³
Screen Size to Weight Ratio 3.78 "/g 3 "/g
Weight 172 g 227 g
Height 158.5 mm 165.1 mm
Width 73.6 mm 75.6 mm
Thickness 7.9 mm 8.9 mm
Foldable Design No No
Available Colors
  • Prism Crush Black
  • Prism Crush White
  • Prism Crush Blue
  • Prism Crush Pink
  • Phantom Black
  • Phantom Silver
  • Phantom Titanium
  • Phantom Navy
  • Phantom Brown
  • Navy

Display

Screen Size 6.5 " 6.8 "
Resolution 1080 x 2400 1440 x 3200
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 87.4 % 89.4 %
Pixel Density 405 PPI 515 PPI
Refresh Rate N/A 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness N/A 1500 nits

Hardware

Battery Capacity per Screen Area 94.67 mAh/in² 108.13 mAh/in²
Battery Density 43.4 mAh/cm³ 45.01 mAh/cm³
Battery Capacity 4000 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 9611 (10 nm) Exynos 2100 (5 nm) - International
CPU Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International
GPU Mali-G72 MP3 Mali-G78 MP14 - International

Connectivity

USB Version 2.0 3.2
OTG Support 1 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 2.0, OTG USB Type-C 3.2, OTG

Software

Operating System Android Android
Initial OS Version 10 11
Maximum OS Version 13 15