Samsung Galaxy S23 Ultra 5G SM-S918B/DS Dual SIM 256GB ROM 8GB RAM GSM Factory Unlocked Global Model (Mobile Cell Phone) (Phantom Green)
Condition: New
$694.99
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30-day refund/replacement
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Availability:
In Stock.
Arrives
Friday, Nov 6
At a glance
- Condition
- New
- Color
- Phantom Green
- Size
- 256GB
- Model
- SAMSUNG Galaxy S23 Ultra 5G
- Storage
- 256 GB
- Memory
- 8 GB
- Screen size
- 6.8 in
Features 5
- Global Dual SIM: Features dual SIM capability (SM-S918B/DS) allowing you to use two different phone numbers simultaneously, perfect for separating work and personal calls or using local SIM cards while traveling internationally
- Generous Storage Capacity: Equipped with 256GB of internal ROM storage providing ample space for thousands of photos, videos, apps, and files, paired with 8GB RAM for smooth multitasking and efficient performance across demanding applications
- Factory Unlocked Freedom: GSM factory unlocked device compatible with major GSM carriers including AT&T and T-Mobile networks, giving you the flexibility to choose your preferred carrier and switch between providers without device restrictions
- Advanced 5G Connectivity: Experience lightning-fast 5G network capabilities for seamless streaming, rapid downloads, and lag-free video calls, while maintaining backward compatibility with 4G and 3G networks where 5G is unavailable
- Sophisticated Design: Showcases an elegant Phantom Green color finish that combines style with the premium build quality of the Galaxy S23 Ultra series, making a distinctive statement while delivering flagship smartphone performance
Description
Unlocked cell phones are compatible with GSM networks such as AT&T and T-Mobile, but are not compatible with CDMA carriers such as Verizon and Sprint. Please check if your GSM cellular carrier supports the bands for this model before purchasing. Wireless frequencies for 3G, 4G, and 5G vary by network. Even when 3G/4G/5G frequencies are supported, a new SIM card or additional configuration may be required, and coverage may vary by location. This device does not include a US warranty as some manufacturers do not honor warranties for international items
Specs 52
| Brand | Samsung |
|---|---|
| Operating System | Android 13.0 |
| Ram Memory Installed Size | 8 GB |
| CPU Model | Snapdragon 8 Gen2 |
| CPU Speed | 2 GHz |
| Memory Storage Capacity | 256 GB |
| Screen Size | 6.8 inches |
| Resolution | 1440x3088 |
| Refresh Rate | 120 hertz |
| Model Name | SAMSUNG Galaxy S23 Ultra 5G |
| RAM Memory Installed | 8 GB |
| Processor Series | Snapdragon 8 Gen2 |
| Processor Speed | 2 GHz |
| Color | Phantom Green |
| SIM Card Slot Count | Dual SIM |
| Connector Type | USB Type C |
| Form Factor | Slate |
| Biometric Security Feature | Face Recognition |
| Human-Interface Input | Touchscreen |
| Sim Card Size | Nano |
| Water Resistance Level | Water Resistant |
| Headphones Jack | 3.5 mm |
| Additional Features | High Refresh Rate Screen, S Pen Support, High Resolution Camera, Dual SIM, eSIM, Wireless Charging |
| Flash Memory Supported Size Maximum | 256 GB |
| Front Photo Sensor Resolution | 12 mp |
| Rear Facing Camera Photo Sensor Resolution | 200 mp |
| Camera Description | Rear |
| Camera Flash | no flash |
| Shooting Modes | Night Mode, Portrait, Program, UHD 8K video capture |
| Number of Rear Facing Cameras | 4 |
| Number of Front Cameras | 1 |
| Item Weight | 4.54 g |
| Item Dimensions | 6.43 x 3.07 x 0.35 inches |
| Effective Video Resolution | 8 kilopixel |
| Video Capture Resolution | 4k |
| Frame Rate | 60 fps |
| Display Type | OLED |
| Aspect Ratio | 16:9 |
| Display Resolution Maximum | 1440 x 3088 |
| Display Pixel Density | 500 ppi |
| Wireless Provider | AT&T |
| Cellular Technology | 4G |
| Connectivity Technology | 4G, 5G |
| Wireless Network Technology | GSM |
| Model Year | 2021 |
| Manufacturer | SAMSUNG |
| Model Series | S23 |
| Specific Uses For Product | photography, streaming, video conferencing |
| Battery Capacity | 5000 mAh |
| Battery Description | Lithium-Ion |
| Phone Talk Time | 40 hours |
| GPS Geotagging Functionality | True |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Nov 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Galaxy S23 Ultra-Great Phone
Color: Phantom Green
Size: 256GB
I love this phone. It arrived in great condition, and it was easy to set up. It takes amazing pictures, and while I'm still getting used to it, it's been great so far. The sound quality is solid, and it's faster and the battery lasts longer than my previous phone. Definitely a good choice.
Reviewed in the United States on September 5, 2026 by CeeDee
Perfect phone!
Color: Phantom Green
Size: 256GB
Great phone that stood the test of time! I bought it, I want to say over a year ago, and it has been wonderful! It arrived in spectacular condition, the color was perfect, camera quality is amazing, battery life lasts all day, even when I'm on it a lot. Great sound quality for videos and calls. Fast and functional. Phone screen light dims or brightens depending on the environment light you're in. Overall great value for the money!
...
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Reviewed in the United States on June 2, 2026 by Kayla C.
Durable phone
Color: Phantom Green
Size: 256GB
Once again I'm happy with my purchase @Samsung they have always been delivering on good quality and durability. Clean camera, plenty spaces, very fast videos and photo photo quality and excellent.
Reviewed in the United States on August 5, 2026 by Dean Salmon
Legit !!
Color: Phantom Green
Size: 256GB
I unfortunately had the experience of buying an S23 Ultra on ebay and while trying to get the phone to work, I received and MCK code error. I called up Tmobile with the serial number and they confirmed the phone was either stolen or had a balance to pay off before I could use my Sim card in it for myself. Long story short, I returned that one and bought this one on Amazon. Took my Sim card out of my S22 and threw it in this S23 Ultra and it fired right up and was able to use. Pretty straight forward and the phone is phenomenal. Buy here from a trusted seller, you will not be disappointed !
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Reviewed in the United States on September 1, 2024 by Joseph Amzler
Phone
Color: Phantom Green
Size: 256GB
I upgraded from a galaxy s10 to this s23 ultra. Still learning how it works. Hate the choices for the default sounds, so that is what I focused on 1st. Haven't found a use for the stylus pen. Not exactly sure what to do with it. The phone itself is a great size and works much faster than my old phone. My voicemail app was the only thing that did not tranfer over and I am having to go back to the old way of dialing into Verizon for my voicemail. That is a bummer, but the phone was everything as advertised.
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Reviewed in the United States on January 6, 2024 by Tanya Harrell
Fantastic but a few issues,
Color: Phantom Green
Size: 256GB
The biggest issue with this phone for me, is I live in North America, and since this phone is "unlocked" it has a regional lock on it for me. This means that some apps, networks, and devices will not work with the phone correctly. For example. When you download apps on the phone, you end up getting the EU version of them. Some apps do not sync between regions, causing issues. Other issues include showing all financial information in Euros instead of dollars, and so forth. Some apps will automatically sync and fix the issue, however it is far and few in between. Overall this is a fantastic phone, however I do plan on switching to a provider to deviate from these issues and get a new phone from them directly. I enjoy using the phone and wish it didn't cause these issues.
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Reviewed in the United States on May 3, 2024 by Tim
SAMSUNG GALAXY 23 ULTRA
Color: Phantom Green
Size: 256GB
Love this phone, currently using it for this review. Wonderful camera for capturing memories. This stylus is just a great touch for typing, or if even using it on mobile games. Been so happy with this phone and the purchase was so worth it. Having a dual sim system has really helped since I went traveling overseas. It was very easy to have an extra slot for the sim card. Have nothing but great things to say about this phone
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Reviewed in the United States on June 20, 2025 by Caroline delaney
No wifi calling option on the "global" S23 Ultra.
Color: Phantom Green
Size: 256GB
I live in a rural area that does not have cell service. Further, it is literally impossible to get a landline from AT&T as they discontinued service to new customers several years ago. The only people who have POTS with AT&T are those who were grand fathered in. My point is that, without wifi calling, I have no means of communication with the outside world. I have gone to the neighbors to use their landline four times to call my service provider. Still no option for on the phone for wifi calling. 30 days have passed and I am out a lot of money, have a phone that is useless to me, and can only communicate with others by email or social media. I knew I shouldn't buy a phone off Amazon, but alas, I did it anyway. Lesson learned. P.S. A couple of reviews mentioned the seal was broken on the box upon arrival, mine was as well. Makes me wonder if this is a legit seller.
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Reviewed in the United States on May 10, 2024 by Kelly G.