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Samsung

Samsung Galaxy S21 5G

SM-G991U AT&T

Samsung Galaxy S21 5G (SM-G991U) AT&T

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Color: Phantom Gray
Storage: 128GB
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Product Description

The Galaxy S21 5G features a compact 6.2‑inch AMOLED display that delivers smooth motion and clear detail for everyday use. Its bright panel and slim frame help provide a comfortable experience across apps, media, and browsing. The device balances portability with strong visual quality for daily tasks.

Powered by fast internal hardware and supported by a versatile triple‑camera system, the phone handles photography, streaming, and multitasking reliably. AT&T 5G compatibility enables steady performance for communication and entertainment.

Specifications

  • Model: Galaxy S21 5G (SM‑G991U)
  • Display: 6.2″ Dynamic AMOLED 2X, 1080×2400, 120Hz, HDR10+
  • Processor: Snapdragon 888
  • RAM: 6GB / 8GB
  • Storage: 128GB / 256GB (no microSD)
  • Rear Cameras: 12MP wide + 64MP telephoto + 12MP ultrawide
  • Front Camera: 10MP
  • Battery: 4000mAh, 25W wired, 15W wireless
  • Network: AT&T 5G + LTE
  • SIM: Nano‑SIM + eSIM
  • OS: Android 11 → 13+
  • Connectivity: Wi‑Fi 6, Bluetooth 5.0, NFC, USB‑C
  • Water Rating: IP68
  • Dimensions: 151.7 × 71.2 × 7.9 mm
  • Weight: 169–171 g
  • Color Options: Phantom Gray, Phantom White, Phantom Violet, Phantom Pink
  • Release Year: 2021 – AT&T Variant (Region‑locked Variant)