Galaxy S23 • Locked AT&TBlack • 256 GB • Physical SIM + eSIM

Name: Galaxy S23 256GB - Black - Locked AT&T
Brand: Samsung
Price: 374.13 USD
Availability: InStock
Rating: 4.69 (14 reviews)

(14 reviews)

$374.13

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Customer reviews for Galaxy S23 • Locked AT&T

Overall rating

14 verified reviews

Rating details

Battery
4.6/5
Shipping
4.6/5
Lens & Camera
4.8/5
Accessories
4.4/5
Packaging
4.8/5
Overall performance
4.8/5
Appearance
4.8/5

Reviews

Michelle B.
Verified purchase
Reviewed 5/17/26, United States.
I transfered my SIM without any issues to the Galaxy S23, and I've been very stressed and watching more You Tube than usual and the battery is holding up amazingly well. One charge even with the video watching lasts more than a day.
Galaxy S23 128GB - Green - Locked AT&T
Galaxy S23 128GB - Green - Locked AT&T
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
5/4/26
John E.
Verified purchase
Reviewed 8/6/26, United States.
Very good. They rated it fair but honestly, I do not find a mark on the case or screen. Everything has worked as it should so far.
Galaxy S23 128GB - Purple - Locked AT&T
Galaxy S23 128GB - Purple - Locked AT&T
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
7/26/26
Tia W.
Verified purchase
Reviewed 1/5/26, United States.
so far good! works good for good condition and came with screen protector on phone which I was happy about!!
Galaxy S23 128GB - Black - Locked AT&T
Galaxy S23 128GB - Black - Locked AT&T
Condition
Good
Light signs of wear. The body may have light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
12/30/25
Glenn R.
Verified purchase
Reviewed 9/4/23, United States.
(Note: The condition of this phone was listed as "excellent" in my original order, not "very good." My review is based on the original description). This is my second BackMarket purchase (previous one for an S22 for a relative). That experience was positive and was a factor in making another phone purchase, this time for myself. As previously, the search and purchase process was very easy. The phone was delivered very quickly and just as-described: in excellent condition with no noticeable scratches or cracks. With a little assistance from AT&T, I was able to swap my existing SIM card and then used Samsung Smart Switch to migrate all my existing phone data to the new one in about an hour. I've been using the S23 for about a week and no issues at all. I'm very pleased with the whole experience at BackMarket and would trust them for any future support and purchases.
Galaxy S23 256GB - Black - Locked AT&T
Galaxy S23 256GB - Black - Locked AT&T
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
8/21/23
Bill B.
Verified purchase
Reviewed 7/15/25, United States.
Phone was in excellent condition when it arrived. Have had no problems with it, very pleased with my first experience with Back Market.
Galaxy S23 128GB - Black - Locked AT&T
Galaxy S23 128GB - Black - Locked AT&T
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
6/28/25
Karen R.
Verified purchase
Reviewed 1/28/26, United States.
Great price and no issues! Easy to set up and transfer data from my old phone.
Galaxy S23 128GB - Purple - Locked AT&T
Galaxy S23 128GB - Purple - Locked AT&T
Condition
Fair
Signs of wear. The body may have a few visible scratches and dents. Items with screens may have light scratches.
Purchased
1/11/26
Frances F.
Verified purchase
Reviewed 10/29/25, United States.
It is working just fine. No issues. I would buy at BackMarket again
Galaxy S23 128GB - Purple - Locked AT&T
Galaxy S23 128GB - Purple - Locked AT&T
Condition
Excellent
Almost no signs of wear. The body may have very light micro-scratches. For items with screens, the screen will have no scratches.
Purchased
10/9/25

Everything you ever wanted to know about the Galaxy S23 • Locked AT&T

Durability
Overall performance
Camera
Screen quality

Galaxy S23Model
50 megapixelsMain camera
8 GBMemory (GB)
YesLast OS Compatibility
256 GBStorage
Phantom BlackColor (official name)
12 megapixelsFront camera
0.95SAR head
SM-S911UManufacturer Ref.

The Galaxy S23 is Samsung’s 2023 flagship, and while it’s now a generation behind the latest, it still packs plenty of flagship-worthy features. With its handy size, advanced camera system, and fast processor, this phone keeps up with the pace of modern life—no wild claims, just reliable performance for people who want a stylish, powerful Android with a proven track record.

Key features:

Release Date: February 2023
Display: 6.1-inch Dynamic AMOLED 2X, FHD+ (2340 x 1080 px), 120Hz refresh rate
Processor: Qualcomm Snapdragon 8 Gen 2 for Galaxy
Camera: Triple rear cameras: 50MP (wide) + 12MP (ultra-wide) + 10MP (telephoto), 12MP front camera
Operating System: Ships with Android 13 (One UI 5.1)
Build: Gorilla Glass Victus 2 (front & back), Armor Aluminum frame
Connectivity: 5G compatible, Wi-Fi 6E support

Who is this for?

The Galaxy S23 is a solid pick for professionals and students who want premium features—like a fast display, excellent cameras, and dependable build quality—without chasing the absolutely latest tech. It’s smaller and easier to use one-handed than larger models like the S23 Ultra, while offering a better balance of usability and performance than older Samsung flagships. If you’re after a practical, durable, and modern Android, this one’s for you.

Pros & Cons: Pros Cons Compact flagship build—easy to use with one hand. No expandable storage—microSD slot is nowhere to be found (again). Fast, smooth display with 120Hz refresh rate. Camera zoom isn’t as advanced as the Ultra models. Gorilla Glass Victus 2 for improved durability. Incremental updates over the S22—expect evolution, not revolution.
Why refurbished?

Choosing a refurbished Galaxy S23 supports tech that’s built to last and the planet, too—less waste, same modern features. Every pre-owned device on Back Market goes through rigorous testing and quality checks for peace of mind. Learn more about our quality standards.

Model: Galaxy S23
Main camera: 50 megapixels
Memory (GB): 8 GB
Last OS Compatibility: Yes
Storage: 256 GB
Color (official name): Phantom Black
Front camera: 12 megapixels
SAR head: 0.95
Manufacturer Ref.: SM-S911U
Carrier compatibility: AT&T
SIM card: Physical SIM + eSIM
Brand: Samsung
Serie: Samsung Galaxy S
Network: 5G
Memory Card Slot: No
SAR body: 0.88
Foldable: No
Resolution: 1080 x 2340
Weight: 168 oz
Screen size (inches): 6.1
Screen type: Dynamic AMOLED 2X
Color: Black
OS: Android
Release Year: 2023

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Customer reviews for Galaxy S23 • Locked AT&T

Overall rating

Rating details

Reviews

Reviews

Michelle B.

John E.

Tia W.

Glenn R.

Bill B.

Karen R.

Frances F.

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Everything you ever wanted to know about the Galaxy S23 • Locked AT&T

Durability

Overall performance

Camera

Screen quality

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