The Samsung Galaxy A51 5G features a 6.5-inch FHD+ Super AMOLED display, an Exynos 980 (or Snapdragon 765G for some markets) octa-core chip, 6/8GB RAM, and 128GB storage (expandable). Key specs include a versatile quad-rear camera (48MP main), 32MP front camera, 4500mAh battery with 15W charging, Android 10 (upgradable), and an in-display fingerprint sensor, offering 5G connectivity in a plastic body.