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Samsung

Samsung Galaxy S21 5G, US Version, 256GB, Phantom Gray - Unlocked (Renewed)

  • Based on 17,542 reviews
Condition: Refurbished - Excellent
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Jan 31 – Feb 5
Order within 11 hours and 31 minutes
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Service provider: Unlocked


Color: Phantom Gray


Size: 256GB


Features

  • 6.2 inch, 1080 x 2400 pixels, Dynamic AMOLED 2X, 120Hz, HDR10 plus, 1300nits, 4000mAh Battery
  • 256GB ROM, 8GB RAM, No SD Card Slot, Qualcomm SM8350 Snapdragon 888 5G (5 nm), Octa-Core, Adreno 660
  • Rear Camera: 64MP, f/2.0 plus 12MP, f/1.8 plus 12MP, f/2.2, Front Camera: 10 MP, f/2.2, Android 11, One UI 3.1
  • 2G: GSM /1900, CDMA 800/1900, 3G: HSDPA (AWS)/1900/2100, CDMA2000 1xEV-DO, 4G LTE: 1/2/3/4/5/7/8/12/13/14/18/19/20/25/26/28/30/38/39/40/41/46/48/66/71, 5G: 2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - Single SIM
  • US Model. Compatible with Most GSM and CDMA Carriers like T-Mobile, AT andamp;T, MetroPCS, etc. Will Also work with CDMA Carriers Such as Verizon, Sprin

Description

With Samsung Galaxy S21 Series, you have the ability to record in 8K. Which means your videos are double the resolution of 4K video. Or use the 64MP camera for still shots that come out clear whether it’s day or night. Single Take AI transcends the usual restrictions of photo and video editing to capture life’s greatest moments in one single take. Samsung Galaxy S21 Series, made for the epic in every day.

Brand: Samsung


Operating System: Android


Ram Memory Installed Size: 8 GB


CPU Model: Snapdragon


CPU Speed: 2.42 GHz


Memory Storage Capacity: 256 GB


Screen Size: 6.2 Inches


Resolution: 1080 x 2400


Refresh Rate: 120


Model Name: Galaxy S21


Product Dimensions: 5.97 x 2.8 x 0.31 inches


Item Weight: 5.9 ounces


Item model number: SM-G991U1


Batteries: 1 Lithium Ion batteries required. (included)


Is Discontinued By Manufacturer: No


OS: Android


RAM: 8 GB


Wireless communication technologies: Cellular


Connectivity technologies: Wireless


GPS: True


Special features: 3G Data Capable, 4G Data Capable, 5G Data Capable, Accelerometer, Bluetooth Enabled, Internet Browser, Music Player, Speakerphone, Touchscreen, Unlocked


Display technology: AMOLED


Other display features: Wireless


Human Interface Input: Touchscreen


Scanner Resolution: 1080 x 2400


Other camera features: Rear


Audio Jack: No 3.5mm headphone jack


Form Factor: Bar


Color: Phantom Gray


Battery Power Rating: 4000 Milliamp Hours


Phone Talk Time: 8 Hours


Whats in the box: accessories


Manufacturer: SAMSUNG


Date First Available: February 10, 2021


Memory Storage Capacity: 256 GB


Standing screen display size: 6.2 Inches


Ram Memory Installed Size: 8 GB


Battery Capacity: 4000 Milliamp Hours


Weight: 5.92 ounces


Charging Time: 1.58 Hours


Frequently asked questions

A 'Renewed' Samsung Galaxy S21 5G is a pre-owned device that has been refurbished and inspected to work and look like new. It should come with limited or no wear, and its performance is tested to meet factory standards. Renewed products typically come with a warranty, but this can vary by seller.

The US Version of the Samsung Galaxy S21 5G is designed to be compatible with US carriers and may not support all network bands used by international carriers. It's important to check with your carrier for compatibility before using it internationally.

An 'Unlocked' Samsung Galaxy S21 5G means that it isn't tied to any specific carrier and can be used with any GSM or CDMA network that supports its wireless bands. This provides flexibility to switch carriers or use local SIM cards while traveling abroad.

The 256GB storage option provides ample space for apps, photos, videos, and other content, which can help maintain the device's performance by preventing storage-related slowdowns. However, it has no direct impact on the processing speed or graphics performance of the phone.

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Top Amazon Reviews

πŸš€ Abunda's Overview

This is our summary and key points to consider based on customer reviews.

Users find the refurbished Samsung Galaxy S21 a worthy investment, mentioning excellent condition resembling new phones, good battery life, and satisfactory performance even as a previous-generation model. Some concerns were expressed about occasional issues such as devices not being unlocked as advertised, and isolated reports of overheating and volume inconsistency.

Pros

  • πŸ‘ Costs significantly less than newer models while offering similar performance
  • πŸ‘ Generally arrives in like-new condition with accessories included
  • πŸ‘ Good battery life and camera quality compared to older models
  • πŸ‘ Features like 120Hz display and 5G offer a smooth user experience

Cons

  • πŸ‘Ž Some units may not be unlocked as advertised, leading to return hassles
  • πŸ‘Ž Missing headphone jack and issues with volume control reported by a user
  • πŸ‘Ž Occasional overheating, particularly near the camera area

Should I Buy It?

If you're looking for a high-quality smartphone without the steep price of the latest model, this refurbished Samsung Galaxy S21 appears to be a great value. However, be prepared to thoroughly check the phone's condition and functionality upon arrival, especially with regards to the unlock status and any signs of overheating. With most users reporting a positive experience, it could be a smart buy with minor caveats to consider.

    • Great phone, excellent performance and value
Service provider: Unlocked Color: Phantom Gray Size: 128GB
Review Image by Katia silot rueda Katia silot rueda
This Samsung Galaxy S21 5G has been a great purchase. The phone works perfectly, runs fast, and is very easy to use. The screen quality is excellent, with bright colors and sharp resolution. The camera takes clear and detailed photos, and the battery lasts well throughout the day with normal use. Even though it is a renewed phone, it arrived in very good condition and looks almost like new. For the price, this is an excellent value. I am very satisfied with this phone and would definitely recommend it. ... show more
Reviewed in the United States on January 7, 2026 by Katia silot rueda Katia silot rueda
    • Excellent so far
Service provider: Unlocked Color: Phantom Gray Size: 128GB
I ordered it on Sept 20th at $339 plus shipping of ~$34 and Morocco VAT of ~$80, so totally I paid $449. Delivery was very good. I saw it was shipped on the 25th. On the 30th, I received an SMS from DHL saying they planned delivery on Oct. 3rd, but on the same day I got an email asking for copy of national ID and content description for clearing customs. I am not a Morocco residents nor citizen, so I sent my foreign passport instead. On the 3rd, Amazon tracking info said clearing custom was delayed as additional documents were needed. So I called DHL, and the rep said it would be delivered on the 4th instead. On the 4th, I saw a newly posted message about delay on Amazon tracking. I called DHL various times but couldn't get to anyone. I then sent an inquiry by email and get a response shortly saying it was being taking care of. Then late afternoon, I got the package. Upon arriving, the seal of the packing had an opening large enough to put in a hand but not for getting the phone out, so I didn't complain. Unpacked, the inner packing of the phone was in excellent condition, very much like the original packing but had no Samsung marking, rather, it had a marking of "amazonrenewed". There was a film covering the screen, like on a new phone. The phone appeared in excellent condition, only had a small scratch at the back when I looked in detail, and a hair of scratch on the screen that is only visible under bright light and in a particular angle. I tried but couldn't turn on the phone - there was no response. The box also included a USB-C cable and a cheap non-Samsung charger made in China. I used my own Samsung Charger to charge the phone. After plugged in, it showed the battery was at 0. So I let it charge to full. After started, it turned out fully unlocked. My Morocco sim card works with 4G. The phone's software looked already reset, but I reset it myself anyhow. Then updated to the latest system with Android 12, and loaded many apps I need. During about the first week, the battery appeared quite poor. With medium usage it lasted about a day. I tried all necessary settings to conserve battery, but it didn't seem to help much. These couple days, it becomes much better, lasting about 45 hours. I read it was likely due to some AI processes either from Android 12 or Samsung doing the learning work at first. But it's pretty bad the phone doesn't show any info. I would say I am very happy with the phone. And this is after having a terrible experience in the past with Samsung. The last Samsung phone I had was S7 Edge bought in Thailand (I am a traveler), new at a Samsung store for perhaps ~$800. I actually wanted the normal S7 (without the "edge"), but it was out of stock then. I never liked the "edge", it was a silly design in my mind. The phone worked well initially, but in the coming couple of years I had a terrible experience. About 5 months later when I was in Vietnam, the screen started to show shaded bands across. As I was wondering how or if I should return to Thailand to get the phone serviced, the bands disappeared after a month. Then about another 7 months later when I was in Azerbaijan, the phone couldn't start after I did a system update. So I couldn't use the phone for a couple weeks until I reached Tbilisi in Georgia when I had someone flashed it. About a year later, it died on me again when I was in Morocco. I had someone re-flashed it, but it was not successful. About 1 month later I reached the city of Fes where there is a Samsung service center. After checking, they said there was something wrong with the motherboard. Very shocking! I've never had such problem in my life with all the phones and computers, cheap or dear, and this was a flagship! So eventually, I sold it to a local repair shop for $200, for which they said they only needed the screen. That was end of 2017. So I never bought a Samsung again, and would definitely not buy one at the full price. I admit the S series is not worthless. At least, I like the camera. But I never had a chance to buy one at a largely reduced price (I won't buy from just any second-hand sellers). So now, the Amazon reviewed phone with some warranty got me interested. Yes, I have some risk, but to me with the past experience, the risk is not much higher than getting a new phone from Samsung, plus, I am putting in a much lower bet now. ... show more
Reviewed in the United States on October 13, 2022 by X Jia
    • Good, not excellent condition.
Service provider: Unlocked Color: Phantom Gray Size: 128GB
Item was promptly shipped and arrived in good order. Packaging was acceptable. The phone was not in "excellent" condition as described - it had minor scratches on the case. Screen is damage free and it works well. Battery life is as expected for a phone of this vintage. Once enclosed in a case the superficial scratches to the case were no longer visible. ... show more
Reviewed in the United States on December 30, 2025 by Dry Creek
    • Nice cell phone
Service provider: Unlocked Color: Phantom Violet Size: 128GB
Review Image by SimplyB SimplyB
Review Image by SimplyB SimplyB
This is my first time buying a cell phone from Amazon. I onky ever purchased directly through my carrier. I am 100% satisfied with this purchase. I will never buy strait from a carrier again. This cell phone arrived and looks brand new. The delivery eta was on par. Not one blemishes on this cell phone. The purple color is so pretty. It was so easy to activate/set up. I recommend this seller and this phone. ... show more
Reviewed in the United States on January 4, 2026 by SimplyB SimplyB
    • Samsung Reliable
Service provider: Unlocked Color: Phantom Black Size: 128GB
I bought the Samsung Galaxy S21 ultra a few weeks ago and in general I am quite satisfied. The screen is large and fluid, perfect for watching videos and social networks, and the performance feels fast on a daily basis. The camera takes good photos in most conditions and the battery lasts all day if I don't abuse too much. The design is elegant and comfortable to hold. ... show more
Reviewed in the United States on January 19, 2026 by Juan Arteaga
    • Works well, but definitely NOT 'Renewed - Excellent' condition.
Service provider: Unlocked Color: Phantom Black Size: 128GB
Review Image by Amazon Customer Amazon Customer
Review Image by Amazon Customer Amazon Customer
Review Image by Amazon Customer Amazon Customer
Review Image by Amazon Customer Amazon Customer
Review Image by Amazon Customer Amazon Customer
Finally pulled the trigger on getting a new phone. I used to use a Galaxy S8 (what I used to take the pictures) and it held together for a good 5 years. However time and wear had taken it's toll. Battery lasting 8-10 hours with light use, a few cracks to the screen, you get the idea. I decided to keep with Samsung as I rarely is ever have issues with them. I had an LG Stylo for less than a week before I went with the S8 after my S6. Found this deal. Advertised as 'Renewed - Excellent', and I knew what quality that would be as that's what my S8 was when I picked it up. So I went a little over budget to pay that premium. It wasn't quite worth it. Pros : Battery seems to be great, lasts about as long as the first ads for the S21 Ultra when it first dropped. It's now day 4 since I decided to test the battery and keep it off the charger. With light use, I'm still at 39%. The fingerprint scanner hasn't given me an issue yet, Audio quality on calls and playing music is better than I was expecting to be honest. The 5G is a lot better than the 4G I was at with my previous phone. The camera is working pretty well, though the 100x is a bit too blurry, but at 50x, for example, it's definitely usable. Screen quality still lives up to the hype, though I still need to tinker with the phone settings as the color seems a bit oversaturated. And, for a user of Boost Mobile, this has been the fastest switchover from phone to phone I've ever had. No calling in, no visiting a physical store, not even punching some numbers into an internet portal, just literally took the SIM from my S8, slid it into the new phone, and in seconds I was active. Even the Boost Mobile site had the updated phone information already registered. Cons: Here's where my praise kind of ends. As I said, it's not in Excellent condition. There are two noticeable scratches on the screen. On mid way up the phone from left to center that I can see at arm's length, and one in the lower right quadrant that I can see when the light hits it just right. At lest you can't see them with the screen on. Man, those two hard to get clear images of. I might not have noticed them if I didn't remove the ill-fitting screen protector with plans to replace it. There's some deformation in the bottom right corner as if that's where they used a metal tool to pry up the old screen. It's not sharp, but you definitely notice if you run your finger over it. The charge port is deformed as well. Slight bend on the rear side towards the front. Not enough to interfere with plugging it in, but it's there. And speaking of ill-fitting protections, the camera were covered with a piece of tape. Even after I removed it, it took more than a little work to clean off the adhesive that was left behind. They seller was 'nice' enough to include a cable and charger. The cable is a sub-standard 4 wire USB-A to USB-C. At least the data lines were connected so I could get SOME use out of it, but no chance of any change plugging it into a USB 3.0 port, as opposed to USB 2.0. The charger itself was a basic 5 volt 2.1 amp mini brick. I'm glad I already had the proper charger and cable so I could get the proper charging speed. So understand that you might not get what's advertised. According to Amazon's own policies, this should have been 'Renewed - Acceptable' at best. That $40 difference, from sellers providing the same, I could have put toward a case, proper screen protector, and maybe even a charge/cable bundle. Definitely not worth the full price I paid. ... show more
Reviewed in the United States on May 30, 2025 by Amazon Customer Amazon Customer

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