Samsung Galaxy S8+ SM-G955U 64GB Smartphone (Unlocked, Midnight Black)

Samsung Galaxy S8+ SM-G955U 64GB Smartphone (Unlocked, Midnight Black)

Samsung Galaxy S8+ SM-G955U 64GB Smartphone (Unlocked, Midnight Black)

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Product Highlights

  • GSM + CDMA / 4G LTE Capable
  • North American Variant
  • Compatible with All Major US Carriers
  • f/1.7 12MP Rear + 8MP Front Cameras
  • Octa-Core Snapdragon 835 Chipset
  • 64GB Storage Capacity and 4GB of RAM
  • microSD Memory Card Slot
  • 6.2" Quad HD+ AMOLED Infinity Display
  • IP68 Waterproof to 4.9'
  • Android 7.0 Nougat
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Color: Midnight Black

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Condition: New

Certified Pre-Owned



This device is carrier-unlocked and should work fully with carriers listed below with green bars. Yellow bars denote partial network coverage. A SIM card and service plan must be purchased separately. Network compatibility listed here is for reference only and does not guarantee phone compatibility or activation on CDMA Carriers.

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Samsung Galaxy S8+ overview

  • 1Description

Put powerful performance in your pocket with the Samsung Galaxy S8+ SM-G955U 64GB Smartphone in Midnight Black. This smartphone incorporates 64GB of storage and is powered by a Qualcomm Snapdragon 835 CPU running four cores at 1.9 GHz and four cores at 2.35 GHz. Thanks to its integrated microSD expansion slot, users have the option of inserting microSDXC cards to expand their storage. For robust multi-tasking performance, this device also features 4GB of RAM, which allows it to efficiently run multiple apps simultaneously.

The Samsung Galaxy S8+ features a 6.2" AMOLED Infinity Display that curves around the phone's sides for an immersive, bezel-free experience. The screen's detailed QHD+ 2960 x 1440 resolution enables vivid and detailed high-definition content. For photo capturing and video chatting, this smartphone features an f/1.7 8-megapixel front camera and an f/1.7 12-megapixel rear camera with LED flash. The rear camera's 1/2.5" sensor and 1.4µm pixels improve low-light performance, and HDR allows you to enjoy photos with optimized exposure. Dual-pixel technology offers faster focusing times with reduced blur.

The Samsung Galaxy S8+ has Bluetooth 5.0 built-in for pairing with other Bluetooth-enabled devices, and dual-band 802.11a/b/g/n/ac Wi-Fi for high-speed Internet connectivity. Integrated Wi-Fi Direct and NFC give you the ability to connect to compatible devices for wirelessly sharing content like photos and music. The Samsung Galaxy S8+ is powered by a 3500mAh lithium-ion battery that can be quickly recharged thanks to on-board Fast Charging technology through the reversible USB Type-C port or through Qi and PMA wireless charging.

Note: The SM-G955U is the North American Variant of the Galaxy S8+. It will run on any GSM network that uses cell frequencies supported by the device, including AT&T and T-Mobile. It will also work with certain CDMA carriers, such as Verizon and Sprint. Current Verizon SIM cards can be transferred to the new device, though the carrier may limit the purchase of new SIM cards for unlocked phones. Since this device is unlocked, functionality for certain carrier-specific features cannot be guaranteed. Please confirm with your carrier that it supports the SM-G955U Galaxy S8+ before purchasing.

Dual Cameras
Rear Camera
Photos: f/1.7, 12 megapixels, 26mm-equivalent, optical image stabilization, phase detection autofocus, LED flash
Features: 1/2.5" sensor size, 1.4µm pixel size, dual-pixel technology, geotagging, touch focus, face/smile detection, Auto HDR, panorama
Video Recording: 2160p at 60 fps with simultaneous 9MP photos, 1080p at 120 fps, HDR, dual-video recording
Front Camera:
Photos: f/1.7, 5 megapixels, autofocus
Features: Dual video call, Auto HDR
GSM + CDMA / 4G LTE Wireless Connectivity
This phone is designed to work on select GSM and CDMA networks and is 4G LTE capable. LTE is an advanced cellular network data protocol capable of data speeds so fast that they compete with wired broadband Internet providers. With an LTE connection, this phone should have no problem streaming HD video, downloading apps, uploading photos, or anything else that requires a high-speed data connection. The phone is also backwards compatible with 3G and 2G data for instances when you can't get LTE. In addition to cellular wireless, this phone also features Bluetooth, NFC, and Wi-Fi connectivity.

Note: Not compatible with all cellular networks. Please make sure your provider uses a frequency or band that this phone supports, and that they will allow you to used carrier unlocked phones. You can check which bands this phone works within the specifications.
North American Variant / US Compatible LTE
The SM-G955U is a US variant of the Galaxy S8+. The SM-G955U's LTE radio is tuned to frequencies that are most often used in the United States and North America. It can also be used in other parts of the world; however, LTE access may be limited or unsupported, depending on the network. To ensure this phone will work with your carrier please check to make sure the frequencies your carrier uses are supported by this phone. The full list of compatible carrier frequencies can be found here, the frequencies this phone supports can be found in the product specs.
Android 7.0 Nougat
The Android operating system integrates heavily with Google's services. Using the card-based Google Now, Android quickly surfaces information for you whenever you need it, powered by the same Knowledge Engine that runs Google's web search. It's a personalized and customizable OS, allowing you to add your favorite apps or widgets to your homescreen. You can even download new themes using the Google Play Store, which offers access to more than one million apps, games, books, music, movies, and more. Android 7.0 Nougat adds major productivity capabilities to the operating system in the form of a multi-window view, which allows for two apps to be placed onscreen at a time. An improved notification system allows you to interact with texts and emails right from your notification pane - without needing to open the app. Other features include file-based encryption, a Data Saver mode, the ability to scale text and icons to better suit your phone's screen, and more.
Infinity Display
The Infinity Display wraps around the left and right edges of the device for an immersive experience and offers QHD+ 2960 x 1440 resolution. The display is certified by the UHD Alliance as Mobile HDR Premium for accurate color reproduction.
Samsung Enhancements
  • Water-Resistant: The device features an IP68 rating, making it dustproof and able to be submerged in 4.9' of water for up to 30 minutes
  • Charging: Supports Fast Charging and Qi/PMA wireless charging
  • Device Coating: Durable Gorilla Glass 5 covers the screen and device rear panel
  • Bixby: Interact with a context-aware assistant by pressing the Bixby button and using voice and touch
  • Samsung DeX: Use a keyboard, mouse, and external display with your device for PC-like productivity with the DeX Station Dock (sold separately)
  • AKG Earbuds: The included earbuds are tuned by AKG by Harman with a hybrid canal fit and anti-tangle metal-fabric cable
  • Dual-band 802.11a/b/g/n/ac Wi-Fi
  • Wi-Fi Direct connectivity
    Wi-Fi hotspot
  • Near Field Communication (NFC) support
  • A-GPS, GLONASS, GALILEO, and BDS support
  • Bluetooth Version 5.0 with A2DP, LE, and apt-X support
  • USB host support
  • ANT+ support
  • Samsung DeX (Desktop Experience Support)
Additional Features
  • TouchWiz user interface
  • Always-on display
  • Sensors: Accelerometer, proximity, geo-magnetic, gyro, fingerprint scanner, iris scanner, barometer, hall, pressure, RGB light, heart rate, Sp02
  • Samsung S-Voice technology
  • Active noise-cancelling with dedicated microphone
UPC: 887276218199

Samsung Galaxy S8+ specs

Operating System Android 7.0 Nougat
Memory 4 GB
Chipset Qualcomm Snapdragon 835
CPU 1.9 GHz Qualcomm Kryo Quad-Core
2.35 GHz Qualcomm Kryo Quad-Core
Coprocessor None
GPU Adreno 540
Storage 64 GB
Size 6.2"
Native Resolution 2960 x 1440
Display Colors 16.0 Million
Aspect Ratio 18.5:9
Pixel Density 529 ppi
Display Technology OLED
Screen Coating Gorilla Glass 5
Input/Output Connectors
Ports 1x USB 3.1 - Type C
Audio 1x 1/8" (3.5 mm) Headphone/Microphone
1x Integrated Stereo Speakers
Flash Media Slot 1 x microSDXC
SIM Card Size Card 1: Nano
CDMA 2G CDMA: 800, 1900 MHz
GSM 2G GSM, GPRS, EDGE: 850, 900, 1800, 1900 MHz
CDMA 3G CDMA2000, EV-DO: 800, 1900 MHz
GSM 3G/3.5G UMTS, HSPA+: 850, 900, 1700, 1900, 2100 MHz
4G LTE LTE: 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41 Bands
Wi-Fi Yes, 802.11a/b/g/n/ac
Bluetooth Bluetooth 5.0 + LE 
Infrared No
FM Radio No
Front Camera
Resolution 8.0 MP
Aperture f/1.7
Front Camera Flash
Front Camera Flash No
Rear Camera
Resolution 12.0 MP / Video: 3840 x 2160p 60 fps
Aperture f/1.7
35mm-Equivalent Focal Length 26
Sensor Size 1/2.5"
Pixel Size 1.4 µm
Focus Type Phase-Detect Autofocus
Image Stabilization Optical
Optical Zoom None
Rear Camera Flash
Rear Camera Flash Yes
Sensors Ambient light sensor, Accelerometer, Barometer (Altimeter), Fingerprint, Gyroscope, Proximity
Water Resistance Submersible
IP Rating IP68
Keyboard Virtual
Pointing Device None
Battery Internal Lithium-Ion (3500.0 mAh)
Fast Charging Technology Samsung Adaptive Fast Charger
Wireless Charging Technology Qi, PMA
Dimensions (W x H x D) 2.9 x 6.3 x 0.3" / 73.4 x 159.5 x 8.1 mm
Weight 6.10 oz / 173 g
Packaging Info
Package Weight 1.07 lb
Box Dimensions (LxWxH) 6.85 x 3.7 x 2.15"

Samsung Galaxy S8+ reviews

Galaxy S8+ SM-G955U 64GB Smartphone (Unlocked, Midnight Black) is rated 4.2 out of 5 by 111.
Rated 3 out of 5 by from Great phone, but.... This is just my opinion... So, I love this phone compared to my IPhone. Performs well and I love the features and the camera is great! But!.... if you don't put a case and screen protector on it you will break it. No avoiding it. It's prone to damage with its curved design and all glass. Fell out of my pocket from a bench and it shattered the back... Come on! This is 3 days of owning it with my case coming in the mail... Also I placed it in a beach bag and somehow got a scratch deep enough on the screen you can stick your fingernail in it... So much for Gorilla glass I guess. Anyways, I love the phone. Just please put a case on it from day one.
Date published: 2017-07-23
Rated 5 out of 5 by from Beautiful Samsung Galaxy S8+ This such a awesome phone once again that they have design I have been a loyal customer of there for many years, and have own all of there galaxy collection and phone, and each one has always meet my expectation in performance and everything and I truly must say they out did there self with this particular phone the sound of the speaker are nice and loud, the camera is just awesome also just really love this phone all around the price was very good for me also because of the trade in of my Samsung Galaxy S7Edge and love the unlock version. [This review was collected as part of a promotion.]
Date published: 2017-09-27
Rated 1 out of 5 by from Worst Phone in Recent History I bought this phone brand new in November 2017 & it is beyond disappointing. The apps are always freezing & frequently don't work properly. The phone's screen will randomly turn on while charging in the middle of the night. The voice to text sometimes works and other times just acts like you haven't said anything at all. Sometimes the rotate screen function works; sometimes it doesn't. Restarting the phone 2-3 times *might* fix it. I would expect a phone that is a couple years old to act up like this but not a brand new one. Although the camera and the edge screen are nice I don't know if I will ever buy a Galaxy S again.
Date published: 2018-07-12
Rated 5 out of 5 by from Phone does not disappoint. Recently I went Kayaking and my S8+ fell in the water. The water was pretty deep but you could reach the bottom with a bit of a struggle. Anyway, I looked for my phone and couldn't find it, so I continued with the trip all sad and stuff. On the way back, 2 hours later, I tried looking for it one last time and actually found it! But the most amazing part was that my phone was working like nothing every happened. This is probably the best experience I've ever had with any phone, especially one actually does what it says it can do. Awesome job Samsung and everyone that made this phone. For those who are wondering, I have had this phone for almost a year now, I've dropped it multiple times with a case and without one (and it still survived after kayak accident). The phone hasn't crashed on me, screen hasn't cracked, but the only thing I have noticed was just the battery performance has reduced. But that makes sense considering age and use. The battery can still last me around the hole day with normal use.
Date published: 2018-08-06
Rated 5 out of 5 by from The best camera I've ever had This phone, has lasted me a whole year, and still works really fast. Everything runs fluidly. The most important thing to me is, the camera. I do photography with my phone. It takes stunning images with supirior quality. I am the photographer of an early college high school program, with my phone. I might just be 15, but I certainly know how to tell when a phone is useful or not.
Date published: 2018-04-25
Rated 1 out of 5 by from This product is terrible Don't waste your money. Yes, the camera quality is nice, and the phone is small and portable, but it is too fragile! I bought my phone six months ago and yes I dropped it a couple of times, and I did have to get my screen repaired once, but after that one time incident, I bought a hard case and a screen protector, but something on the inside is broken. On my screen, there was a black dot and a line cut across the phone. As time went on, half of my screen (where the line is) glitches to all white. I've spent too much money on this phone in such a short amount of time. I really do regret buying this phone.
Date published: 2018-06-07
Rated 5 out of 5 by from Simply Great! The Samsung Galaxy S8+ is the best phone on the market. The battery life is amazing! It lasts all day and charges really fast! I've been using Android phones for years. But when the phones battery became non-removable I had to switch to an iPhone because my battery would drain before noon. It doesn't make sense to have a fancy phone that you can't use! As always, the screen resolution is crystal clear! Everything is vivid when I am watching a movie or going through my photos. My only wish is that they make the fingerprint reader in a more accessible location, like the Nexus 6P, but otherwise the phone is flawless. [This review was collected as part of a promotion.]
Date published: 2017-11-16
Rated 1 out of 5 by from Software Experience Ruined the Great Hardware This is my first & last Samsung phone. It has one of the best hardware builds in the market but software ruined everything. I don't like all the Samsung bloatware (some can be removed), but understand their decision for promoting their service, but why can't I even remove Facebook app. And Bixby... I don't need to talk about how bad & useless it is, but it still holds a physical button that could not be remapped. The system is showing glitches from time to time. Opening the app drawer is never smooth. I have iPhone 6s+ and Pixel, both phones are much more smoother than S8+.
Date published: 2017-07-05
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