Description
Samsung Galaxy S21 ULTRA 5G G988U Black 128GB Gsm/cdma Unlocked, A Grade
A Grade units of the Samsung Galaxy S21 ULTRA 5G, listed under the code G988U in the name and G998U on the SKU, in Black (Phantom Black) with 128 GB. The catalog records them as A-stock and GSM unlocked, while the name reads Gsm/cdma Unlocked, so Verizon buyers should confirm activation. It is the US Snapdragon 888 Ultra with 108 MP and dual telephoto cameras and S Pen support.
The Galaxy S21 Ultra 5G is Samsung's early-2021 top flagship and the first S-series phone with S Pen support. It has a 6.8-inch Quad HD+ Dynamic AMOLED 2X display with an adaptive 10 to 120 Hz refresh rate, a Qualcomm Snapdragon 888 in the US G998U, 12 GB of RAM with 128 GB of storage and no microSD slot, a quad rear camera with a 108 MP main, 10 MP 3x telephoto, 10 MP 10x periscope telephoto, and 12 MP ultra-wide, a 40 MP front camera, a 5,000 mAh battery with 25 W wired and fast wireless charging, Gorilla Glass Victus, IP68 water resistance, and sub-6 GHz plus mmWave 5G. It shipped on Android 11 with One UI 3.1.
Dealers buy the S21 Ultra from TG Wireless for marketplace resale, carrier-dealer stock, and executive and creative fleets.
Key specifications
| Model | Samsung Galaxy S21 Ultra 5G, US variant SM-G998U (SKU); name reads G988U, see notes |
|---|---|
| Storage | 128 GB |
| Color | Black |
| Network status | GSM unlocked |
| Operating system | Android 11 with One UI 3.1 as shipped |
| Display | 6.8-inch Quad HD+ Dynamic AMOLED 2X, adaptive 10 to 120 Hz, Gorilla Glass Victus |
| Chipset | Qualcomm Snapdragon 888 octa-core |
| Memory | 12 GB RAM, 128 GB storage; no microSD slot |
| Rear camera | Quad: 108 MP wide with OIS, 10 MP 3x telephoto, 10 MP 10x periscope telephoto, 12 MP ultra-wide; 8K video, 100x Space Zoom |
| Front camera | 40 MP |
| Stylus | S Pen supported (sold separately), no silo |
| Battery | 5,000 mAh; 25 W wired, 15 W wireless, Wireless PowerShare |
| Security | Ultrasonic in-display fingerprint reader, Samsung Knox |
| Durability | IP68, Gorilla Glass Victus front and back |
| Connectivity | 5G sub-6 GHz and mmWave, 4G LTE, Wi-Fi 6E, Bluetooth 5.2, NFC, UWB, USB-C |
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 S21 Ultra US model is a 5G phone with sub-6 GHz and mmWave radios. The name and the old heading describe this lot as GSM/CDMA unlocked, while the catalog status field reads GSM unlocked; the resolver recorded GSM unlocked, so Verizon activation should be confirmed before purchase for that network. Lock state is per listing; see the network status line in the table. US unlocked Samsung models are approved for VoLTE on the major carriers. The US 3G retirement and T-Mobile's 2026 2G shutdown do not affect it.
Resale fit
- Marketplace and storefront resale of a 108 MP, 10x periscope flagship with S Pen support.
- Executive and creative fleets that want the largest Galaxy S display with stylus input.
- Carrier dealers stocking US-variant unlocked Ultras.
- Trade-in and insurance replacement pools that need like-for-like S21 Ultra units.
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.
