- Home Page /
- Cell Phones /
- Shop Phones by Brand /
- Samsung Galaxy Phones /
- Samsung Galaxy Prepaid Phones /
- All Samsung Galaxy Prepaid Phones /
- Straight Talk Samsung Galaxy S21 Ultra 5G 128...
0 ratings
Item #:
89296648
Straight Talk Samsung Galaxy S21 Ultra 5G 128GB Phantom Black Prepaid Smartphone
Item #:
89296648
MMK 1814006
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:
Only 5 items left in stock.
Order now and get it around Tuesday, August 11
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
Transform your story sharing, live streaming, video-editing and multi-tasking with hyperfast processor speeds.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High-Resolution Display
The Samsung Galaxy S21 Ultra features a stunning 6.8-inch Dynamic AMOLED display with a 120Hz refresh rate, providing vibrant colors and smooth scrolling for an immersive viewing experience.
Advanced Camera System
Equipped with a versatile camera setup, including a 108MP main sensor, the S21 Ultra captures detailed images and offers 100x Space Zoom, ideal for photography enthusiasts.
5G Connectivity
As a 5G-enabled device, the S21 Ultra ensures lightning-fast download and streaming speeds, making it perfect for users who demand high performance and seamless internet access on-the-go.
Product Details
- Galaxy S21 Ultra 5G is crafted so you don’t need to choose between video and photo. With a single tap, you can pull super-clear stills straight from high-resolution 8K video. Or if you’re looking to capture stunning photos, the 108MP camera feels like you’ve brought your own professional studio with you. Galaxy S21 Ultra 5G, designed to be epic in every way.
| Brand | Samsung |
| Mobile OS | Android 11, One UI 3.1 |
| Model name | S21 Ultra |
| Screen size | 6.8 in (17.3 cm) |
| HD capacity | 128 GB |
| Battery capacity | 5000 mAh |
| Ram memory | 12 GB |
| Wireless | 5G |
| Service provider | Straight Talk |
| Cellular service plan | Prepaid |
| Rear cam mpx | 108 MP |
| Front cam mpx | 40 MP |
| Color | Black |
| Proc. brand | Samsung |
| Display | AMOLED |
| Resolution | 8K |
| Color category | Black |
| Series | S21 |
| Device type | Prepaid Phones |
| Edition | Ultra |
| Model | G998U |
| Processor speed | 2.84 GHz |
| Has written warranty | No |
| Manufacturer | SAMSUNG |
| Has front-facing camera | Y |
| Native resolution | 8K |
| Item Weight | 0.9 lbs (410 grams) |
Who Should Buy?
-
Tech Enthusiasts
Users who appreciate advanced technology and cutting-edge features will enjoy the Galaxy S21 Ultra's capabilities.
-
Photography Lovers
With its outstanding camera system, users passionate about photography will find this smartphone ideal for their needs.
-
Frequent Travelers
Travelers can benefit from the 5G connectivity and excellent battery life, ensuring reliable communication and entertainment on-the-go.
-
Budget-Conscious Users
Individuals looking for an affordable smartphone may find this model too expensive compared to other options available.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
Is the S21 Ultra compatible with prepaid carriers?
Answer: Yes, it is compatible with major prepaid carriers like Cricket Wireless, Boost Mobile, and MetroPCS. -
Question:
What is the maximum camera resolution on the S21 Ultra?
Answer: The S21 Ultra has a maximum camera resolution of 108MP. -
Question:
Does the S21 Ultra support 5G connectivity?
Answer: Yes, it is built with 5G connectivity in mind.
Samsung All Samsung Galaxy Prepaid Phones Editorial Review
No editorial reviews found
Customer Reviews & Ratings
27 customers ratings
-
5 Star
70%
-
4 Star
7%
-
3 Star
3%
-
2 Star
0%
-
1 Star
18%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 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.
MMK 1814006
Order now and get it around Tuesday, August 11
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:
Only 5 items left in stock.
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
- Hyperfast processor speeds for superior performance.
- Universal unlocked compatibility with all major U.S. carriers.
- Featuring a pro-quality 108MP camera for stunning photos and 8K video.
- Advanced multi-cam recording for easy video creation.
- Extensive built-in storage options available.
- All-day intelligent battery life keeps you connected.
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.