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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
Condition: Excellent

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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)

Condition Guide

Condition Description
Excellent Screen and housing are like new condition. Some devices may have a minimal cosmetic flaw. Only fine scratches and scuffs are allowed.
Great Screen is in excellent condition. Screen/Housing may have minor signs of use. Overall very good condition.
Good Visible signs of use and multiple minor scratches are allowed. Can have noticeable flaws that are not heavy. Only few dented areas are allowed on housing.
Fair Moderate signs of use on screen and housing. Deeper scratches and dents may be present from normal usage but are not considered excessive.