Description
Samsung Galaxy S21 5G G991U 128 GB White, A Grade (A-stock), GSM/CDMA unlocked
Phantom White Samsung Galaxy S21 5G G991U, 128 GB, A-stock, GSM/CDMA unlocked: lightly used and fully tested, with very minor marks at most. White sells first in many export and prepaid channels and photographs well for listings, which makes this the member online sellers pick for a tested compact 5G Samsung.
The Galaxy S21 5G SM-G991U is the US build of Samsung's compact 2021 flagship: a 6.2-inch 120 Hz Dynamic AMOLED 2X display under Gorilla Glass Victus, the 5 nm Snapdragon 888, 8 GB of RAM with 128 GB of storage, a triple rear camera with 64 MP telephoto and 8K video, a 4,000 mAh battery, and IP68 sealing, all behind the contour-cut camera housing that defined the series. It was updated through Android 14. TG Wireless supplies graded G991U units in four colors to prepaid and MVNO dealers, corporate fleets, and marketplace sellers who want a pocketable multi-carrier 5G Samsung with consistent cosmetics.
Key specifications
| Model | Samsung Galaxy S21 5G SM-G991U (2021), US variant |
|---|---|
| Storage | 128 GB |
| Color | White |
| Network status | GSM/CDMA unlocked |
| Operating system | Android 11 as shipped, updated through Android 14 with One UI 6 |
| Display | 6.2-inch Dynamic AMOLED 2X, 2400 x 1080, 120 Hz adaptive, Gorilla Glass Victus |
| Chipset | Qualcomm Snapdragon 888, 5 nm |
| Memory | 8 GB RAM with 128 GB storage |
| Rear camera | 12 MP wide, 64 MP telephoto, 12 MP ultra-wide; 8K video |
| Front camera | 10 MP |
| Battery | 4,000 mAh, 25 W wired charging, wireless charging, Wireless PowerShare |
| Durability | IP68 |
| Build | Contour-cut camera housing, polycarbonate back, no microSD slot |
Condition: A Grade
A Grade (A-Stock) units are lightly used, fully tested, and working, and may show very minor nicks or scratches. Units are supplied as graded; ask your account manager about packaging (original box, accessories, or handset only) when you request a quote.
Network and compatibility
The Galaxy S21 G991U is a 5G phone with full 4G LTE and VoLTE, so the US 2G and 3G retirements do not affect it. Lock state is per listing; see the network status line in the table. Unlocked US units carry the band set for AT&T, T-Mobile, Verizon, and their prepaid brands, including sub-6 GHz and mmWave 5G, and most activate without issue. 5G provisioning and VoLTE acceptance still depend on each carrier's current device list, so confirm with the carrier before quoting activations in volume.
Resale fit
- Prepaid and MVNO dealers whose customers want a 5G Samsung flagship at a used-market ticket.
- Corporate, institutional, and fleet buyers standardizing on one unlocked 5G model.
- Marketplace and storefront sellers who list graded units with consistent cosmetics.
- Refurbishers and repair shops that source working units for resale or parts.
Ordering from TG Wireless
TG Wireless sells to the trade. Pricing is shown to approved dealer accounts, and your account manager confirms availability, quantities, and grade mix before invoicing. Orders typically ship within 24 hours of order placement by FedEx, UPS, or DHL, within the United States and internationally. TG Wireless's 12-month warranty applies, with coverage and RMA handling per your order documentation. Resellers with a valid resale certificate are not charged sales tax. The FAQ covers account setup and shipping questions.
