- Home Page /
- Cell Phones /
- 5G Wireless /
- 5G Unlocked Phones /
- Fully Unlocked Samsung Galaxy S21 Ultra 5G 128GB SM-G99...
0 ratings
![Fully Unlocked Samsung Galaxy S21 Ultra 5G 128GB SM-G998U [RETAIL BOX]](https://i5.walmartimages.com/seo/Fully-Unlocked-Samsung-Galaxy-S21-Ultra-5G-128GB-SM-G998U-RETAIL-BOX_cbe2f53a-c103-422c-9cc6-fe1551231bc7.648b153659fa6fcf977de785718280aa.jpeg)
![Fully Unlocked Samsung Galaxy S21 Ultra 5G 128GB SM-G998U [RETAIL BOX]](https://www.ubuy.wf/productimg/?image=aHR0cHM6Ly9pNS53YWxtYXJ0aW1hZ2VzLmNvbS9zZW8vRnVsbHktVW5sb2NrZWQtU2Ftc3VuZy1HYWxheHktUzIxLVVsdHJhLTVHLTEyOEdCLVNNLUc5OThVLVJFVEFJTC1CT1hfY2JlMmY1M2EtYzEwMy00MjJjLTljYzYtZmUxNTUxMjMxYmM3LjY0OGIxNTM2NTlmYTZmY2Y5NzdkZTc4NTcxODI4MGFhLmpwZWc.jpg)
Item #:
64557071
Fully Unlocked Samsung Galaxy S21 Ultra 5G 128GB SM-G998U [RETAIL BOX]
70% of respondents would recommend this to a friend
Item #:
64557071
XPF 60633
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Thursday, October 01
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Fully Unlocked Samsung Galaxy S21 Ultra 5G 128GB SM-G998U RETAIL BOX
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step 1 Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Fully Unlocked
Enjoy complete freedom with a fully unlocked Galaxy S21 Ultra 5G, allowing you to choose any carrier without limitations.
Impressive Camera
Capture stunning photos with a versatile camera system featuring 108MP resolution, 10x optical zoom, and advanced night mode for exceptional photography in all conditions.
5G Compatibility
Experience lightning-fast internet with 5G connectivity, ensuring quicker downloads, seamless streaming, and enhanced gaming performance for a future-proof smartphone experience.
Product Details
| Device type | Unlocked Cell Phones |
| Battery capacity | 5000 mAh |
| Screen size | 6.8 in |
| Wireless | 5G |
| HD capacity | 128 GB |
| Ram memory | 12 GB |
| Brand | Samsung |
| Mobile OS | Android |
| Series | Galaxy S21 |
| Model name | SM-G998U |
| Service provider | AT&T; T-Mobile; Verizon |
| Display | AMOLED |
| Resolution | 3200x1440 |
| Rear cam mpx | 12 MP |
| Front cam mpx | 10 MP |
| Features | Wireless Charging |
| Processor speed | 2.84 GHz |
| Color | Black |
| Assembled product weight | 6 oz (170.1 grams) |
| Accessories included | User Manual, Charging Cable, Sim Ejector Tool |
Who Should Buy?
-
Photography Enthusiasts
The S21 Ultra features a superior camera system perfect for capturing high-resolution photos and videos.
-
Tech Savvy Users
Geared for users who seek the latest technology, the phone supports 5G and cutting-edge features.
-
Gaming Aficionados
With powerful processing and display capabilities, this model is ideal for high-performance gaming experiences.
-
Budget-Conscious Buyers
The S21 Ultra can be expensive; those on a tight budget may find better value elsewhere.
Product Description
Fully Unlocked Samsung Galaxy S21 Ultra 5G 128GB SM-G998U [RETAIL BOX]
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What condition are the devices in?
Answer: The devices are literally with no sign of use. -
Question:
Are the devices fully functional?
Answer: Yes, they are verified to be fully functional with 100% Battery health. -
Question:
Can the devices work on any carrier?
Answer: Yes, the devices are factory unlocked and support both GSM & CDMA carriers.
Samsung 5G Unlocked Phones Editorial Review
Fully Unlocked Samsung Galaxy S21 Ultra 5G 128GB SM-G998U [RETAIL BOX] features a stunning 6.8-inch AMOLED display and a powerful 5000 mAh battery, making it an excellent choice for users seeking high performance and exceptional visuals. Despite receiving the device in a generic box instead of the expected retail packaging, many users appreciate the phone's overall functionality, with impressive specifications like 12 GB of RAM and a 12 MP rear camera. Questions regarding factory paperwork and original firmware have arisen, highlighting potential discrepancies in what was advertised and what was delivered.
Customer Reviews & Ratings
1 customers ratings
-
5 Star
0%
-
4 Star
100%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Pros
- Impressive 6.8-inch AMOLED display
- Large 5000 mAh battery for longevity
- 12 GB of RAM for smooth performance
- Includes user manual and charging cable
- Compatible with major carriers like AT&T and Verizon
Cons
- Generic packaging instead of retail box may disappoint
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
XPF 60633
Order now and get it around Thursday, October 01
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Devices are literally with no sign of use
- Verified fully functional with 100% Battery health
- Derived from Samsung Overstock and undeliverable returns
- Factory unlocked for GSM & CDMA supporting all carriers
- Comes with original box, user manual, charging cable, and sim ejector tool
- 90 days warranty included
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.