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Samsung Galaxy S21 Ultra 5G SM-G998B/DS 256GB 12GB RAM Factory Unlocked (GSM Only | No CDMA - not Compatible with Verizon/Sprint) International Version - Phantom Black

4.4 4.4 out of 5 stars 224 ratings
Brand SAMSUNG
Model Name Phantom
Wireless Carrier Unlocked
Operating System Android 11.0
Cellular Technology GSM, WCDMA, LTE, 5G
Memory Storage Capacity 12 GB
Color Black
Screen Size 6.8 Inches
Wireless network technology GSM, CDMA
Ram Memory Installed Size 12 GB

This product is available as Renewed.

Samsung S21 Ultra 5G SM-G998B Unlocked 256GB Black A+
Samsung S21 Ultra 5G SM-G998B Unlocked 256GB Black A+ $389.99 & FREE Shipping
(9)
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Top Brand: SAMSUNG

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Added to Cart
Price—$399.00-8% $374.99
Typical price: $405.99		$944.00$579.99-10% $239.00
Typical price: $264.99
Delivery—
Get it as soon as Tuesday, Apr 30
Get it May 1 - 2
Get it May 1 - 2
—
Get it as soon as Thursday, May 2
Customer Ratings
4.44.4 out of 5 stars224
4.34.3 out of 5 stars44
4.14.1 out of 5 stars4,241
4.74.7 out of 5 stars37
4.34.3 out of 5 stars101
4.14.1 out of 5 stars1,669
Face recognition
4.4
4.2
4.1
5.0
4.0
4.5
Battery life
4.2
3.9
4.0
5.0
4.2
4.1
Fingerprint reader
4.2
4.3
4.2
5.0
4.2
4.2
Value for money
—
—
3.9
—
3.8
4.1
Sold By
—
Hybrid IT
Mobile Stream
OE USA
Gadgets Dealz
EVOLVETECH
display size
6.8 inches
6.8 inches
6.8 inches
6.8 inches
6.8 inches
6.7 inches
memory capacity
12 GB
128 GB
256 GB
256 GB
512 GB
128 GB
model name
Phantom
Galaxy S21 Ultra 5G
Galaxy S21 Ultra 5G 256GB
SM-S918B/DS
Galaxy S21 Ultra 5G
Galaxy S21 Plus
operating system
Android 11.0
Android
Android
Android 13.0
Android
Android
connectivity tech
—
Bluetooth, Wireless
Wi-Fi
USB
Bluetooth, Wireless
Bluetooth, Wireless
display type
AMOLED
AMOLED
AMOLED
AMOLED
AMOLED
AMOLED
service provider
T-Mobile
—
Unlocked
—
—
Unlocked

Product Description

The first Galaxy S series smartphone with S Pen

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Samsung

Samsung Galaxy S21 Ultra 5G SM-G998B/DS 256GB 12GB RAM Factory Unlocked (GSM Only | No CDMA - not Compatible with Verizon/Sprint) International Version - Phantom Black

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Customer reviews

4.4 out of 5 stars
4.4 out of 5
224 global ratings

Customers say

Customers like the resolution and speed of the cellular phone. They mention that the screen resolution is beautiful, bright, and colorful. That said, some complain that the ability to make and receive phone calls stopped working after a few months. Opinions are mixed on performance.

AI-generated from the text of customer reviews

5 customers mention5 positive0 negative

Customers are satisfied with the resolution of the cellular phone. They mention that the screen resolution is beautiful, bright, and colorful.

"The cellphone is great, really fast, and its screen resolution is beautiful...." Read more

"...Beautiful phone. Loved the new camera. I am a new Samsung user so having to purchase the charging dock and type C headphones separately was a bummer." Read more

"...reader very fast, It lasted for a day and half also screen quality very bright, I actually love it." Read more

"This phone is very fast. Has very colorful display, great resolution. The only thing I need is to buy fast charger and see how fast it is." Read more

4 customers mention4 positive0 negative

Customers are satisfied with the speed of the cellular phone. They mention that it is very fast, has a fast fingerprint reader, and is the best phone they have ever used.

"The cellphone is great, really fast, and its screen resolution is beautiful...." Read more

"This is the best phone I have ever used, fingerprint reader very fast, It lasted for a day and half also screen quality very bright, I actually love..." Read more

"This phone is very fast. Has very colorful display, great resolution. The only thing I need is to buy fast charger and see how fast it is." Read more

"Fast delivery...." Read more

13 customers mention7 positive6 negative

Customers are mixed about the performance of the cellular phone. Some mention it is a very good phone, really fast, and its screen resolution is beautiful. However, others say that it does not work on the US 5G network, 5G does not works with Bell Canada, and that it stopped working after two month.

"The cellphone is great, really fast, and its screen resolution is beautiful...." Read more

"...No problems other than this mobile will not work in America as advertised -- 3G networks are now disabled in the USA and this iteration of the phone..." Read more

"...Beautiful phone. Loved the new camera. I am a new Samsung user so having to purchase the charging dock and type C headphones separately was a bummer." Read more

"This is the best phone I have ever used, fingerprint reader very fast, It lasted for a day and half also screen quality very bright, I actually love..." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the ability to call on the cellular phone. They mention that it stopped making or receiving phone calls or text messages after two months.

"...Since this month (July, 2022) it stopped making or receiving phone calls or text messages. I went to AT&T store...." Read more

"...Update: as of June 1st 2022, Voice will also no longer work on this phone on the AT&T Network in the US." Read more

"...me this product factory unlock phone and after two month can not make call or receive call." Read more

Absolutely satisfied!
5 Stars
Absolutely satisfied!
I was looking for dual sim unlocked phone.This one is absolutely success!It works perfectly with At&t and sim card from a different country together!Great camera, great look with my favorite curved screen!Thanks to this seller!
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Top reviews from the United States

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Tokyo
5.0 out of 5 stars Fast delivery.
Reviewed in the United States on January 4, 2022
Verified Purchase
Genuine product -- arrived very quickly. No problems other than this mobile will not work in America as advertised -- 3G networks are now disabled in the USA and this iteration of the phone has no 5G bands for AT&T etc.
Helpful
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Erick Gomez
5.0 out of 5 stars This is what I was expecting to have
Reviewed in the United States on May 13, 2021
Verified Purchase
The cellphone is great, really fast, and its screen resolution is beautiful. I changed from a Galaxy S5 to this one, so the difference is just HUGE and evident. Highly recommended in spite of the price.
7 people found this helpful
Helpful
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Lina R
5.0 out of 5 stars Love it!
Reviewed in the United States on April 7, 2021
Verified Purchase
Firstly, Thanks to this seller! Very reliable and the delivery was faster than expected.

Beautiful phone. Loved the new camera. I am a new Samsung user so having to purchase the charging dock and type C headphones separately was a bummer.
10 people found this helpful
Helpful
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CSMD
5.0 out of 5 stars It is a very very good phone.
Reviewed in the United States on April 24, 2021
Verified Purchase
This is the best phone I have ever used, fingerprint reader very fast, It lasted for a day and half also screen quality very bright, I actually love it.
5 people found this helpful
Helpful
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Segam
4.0 out of 5 stars Good phone. Served the purpose.
Reviewed in the United States on April 13, 2021
Verified Purchase
I switched from Galaxy s10+ and bought this phone just to have two phone numbers. 5G isn't working but that's not a deal breaker for me.

See below some important details:

Model:
US version: SM-G988U1 (unlocked for GSM and CDMA)
International version: SM-G988B/DS (Supports only GSM)

Hardware differences:
Processor:
US version: Snapdragon
International version: Exynos
SIM Trays:
US version: Single SIM tray
International version: Dual SIM tray + supports eSIM

5G is not working for me with T-Mobile (SIM1), and AT&T (SIM2). I still like this phone with 4G connectivity and 4G+, which is same as the 4G-LTE support.

Here is why 5G isn't working in the USA on the international version...
SM-G988B/DS' supported 5G bands
SA/NSA/Sub6 (n1, n3, n5, n7, n8, n28, n40, n77, n78)

T-Mobile's 5G Bands:
n71 (600 MHz)
n41 (2.5 GHz)
n260 (39 GHz)

AT&T's 5G Bands:
n260 39GHz mmWave
n5 850MHz Low-band... I believe this frequency is not used

I'm giving 4-stars out of 5 because 5G isn't working.

Sorry for the long post. Hope this helps some potential buyers in making a decision.
130 people found this helpful
Helpful
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jason
5.0 out of 5 stars Met expectations
Reviewed in the United States on August 4, 2021
Verified Purchase
This phone is very fast. Has very colorful display, great resolution. The only thing I need is to buy fast charger and see how fast it is.
Helpful
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QL
1.0 out of 5 stars The seller (Cell Universal) is lying in Amazon
Reviewed in the United States on July 22, 2022
Verified Purchase
Last year I was required by AT&T to switch to a 5G phone because they will shutdown their 3G service soon. In Oct, 2021 I purchased this phone (a Samsung Galaxy S21 Ultra 5G, SM-G998B/DS 256GB 12GB RAM International Version) from Amazon because in its "Product Description" it said clearly that "This phone will work with GSM SIM cards like AT&T,..." It worked, however, only to June, 2022. Since this month (July, 2022) it stopped making or receiving phone calls or text messages. I went to AT&T store. They tried everything until finally discovered that AT&T system doesn't recognize it as a 5G device, which means, this phone can't be used by AT&T 5G network. I thus asked the seller to either refund or replace this phone with one that can be worked for AT&T, but they rejected because "the returns/replacements period for your order had expired a very long time ago" - However, the problem didn't appear until this month when AT&T completely shutdown their 3G service! The mistake was due to the wrong information provided by the seller and Amazon in their "Product Description" so why should a customer pay for their mistake??!!
3 people found this helpful
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Top reviews from other countries

Translate all reviews to English
Luis
5.0 out of 5 stars Camara
Reviewed in Mexico on January 2, 2023
Verified Purchase
Lo mejor
Report
Amazon Customer
5.0 out of 5 stars Great new phone.
Reviewed in Singapore on March 26, 2022
Verified Purchase
Phone is really good. Camera I feel is best. And it is the last ever (maybe) samsung with infinity screen. Pen works (bought separately). Yes and camera, macro is fantastic.
The seler is local Singapore. Item was new, likely from M1
Customer image
Amazon Customer
5.0 out of 5 stars Great new phone.
Reviewed in Singapore on March 26, 2022
Phone is really good. Camera I feel is best. And it is the last ever (maybe) samsung with infinity screen. Pen works (bought separately). Yes and camera, macro is fantastic.
The seler is local Singapore. Item was new, likely from M1
Images in this review
Customer image
Customer image
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Oscar F.
5.0 out of 5 stars Todo excelente
Reviewed in Mexico on September 22, 2021
Verified Purchase
El celular me llegó antes de lo planeado en perfecto estado, en caja cerrada con sellos de Samsung, para mis necesidades esta perfecto, excelente servicio, recomiendo ampliamente a Karlitashop, ya que también me envío mi factura en tiempo y forma.
4 people found this helpful
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PJ
5.0 out of 5 stars Highly recommended
Reviewed in Singapore on April 5, 2021
Verified Purchase
Excellent price, prompt communication, fast delivery. Three big pluses and nothing to complain about - not bad at all if you ask me. I recommend the seller. Thanks so much.
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Gerardo
5.0 out of 5 stars Supero las expectativas.
Reviewed in Mexico on December 7, 2021
Verified Purchase
Excelente, el equipo llego antes del tiempo esperado, de acuerdo a las especificaciones, con sus empaques con sellos originales. Volveria a comprar mis equipos con este vendedor y lo recomiendo ampliamente.
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