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Samsung Galaxy S23 5G bar phone in Phantom Black finish

SAMSUNG

Samsung Galaxy S23 5G S911U 128GB Phantom Black

SKU CH-3M1C-5QJFZ

A 6.1-inch Android smartphone with 128GB storage, 8GB RAM and a 120Hz Dynamic AMOLED 2X display, locked to AT&T

  • Storage drive128 GB
  • Operating systemAndroid
  • Form factorBar Phones
  • Main screen size6.1 in (15.5 cm)
  • RAM capacity8 GB
  • Product typeCell Phone
  • 1" Dynamic AMOLED 2X display with 120Hz refresh rate
  • Snapdragon 8 Gen 2 processor powers demanding tasks smoothly
  • 128GB storage keeps apps and media accessible
  • Android 13 with One UI 5.1 delivers current features
  • 8GB RAM supports fluid multitasking across apps

Carrier-Locked Samsung Galaxy S23

The Samsung Galaxy S23 5G model S911U is an AT&T-locked smartphone with 128 GB of internal storage and 8 GB of RAM. It runs Android 13 with Samsung One UI 5.1 out of the box. The 6.1-inch Dynamic AMOLED 2X display supports a 120 Hz refresh rate and HDR10+ at 1080 x 2340 resolution. It is powered by the Qualcomm SM8550-AC Snapdragon 8 Gen 2 processor.

Best for AT&T subscribers wanting a compact flagship

This phone suits buyers who need a new, carrier-locked handset for the AT&T network and prefer a 6.1-inch form factor. It is not for shoppers requiring an unlocked device, dual-SIM flexibility, expandable storage, or a larger screen. Buyers who want a headphone jack or a microSD slot should look at other models.

128 GB fixed internal storage decides fit

The single specification that decides suitability is the 128 GB of non-expandable internal storage. Users who store large media libraries, offline maps, or heavy applications locally will hit this ceiling quickly. Cloud-dependent workflows or light local usage fit comfortably within the limit.

How it compares

Measured against everything we stock in No-Contract Smartphones, at today’s prices. Recalculated every night.

Price $302.99
Pricier than about 73% of the 646 comparable items (median $180.49).
Storage drive 128 GB
Typical for this category: the median of 506 items is 128 GB.

Specifications

Product
Brand nameSamsung
Product lineGalaxy S23 5G
Model nameS911U
Product typeCell Phone
Product colorBlack
Memory
RAM capacity8 GB
Storage
Storage drive128 GB
Display
TouchscreenYes
Main screen size6.1 in (15.5 cm)
Connectivity
Built-in GPSYes
Size & build
Form factorBar Phones
Software
Operating systemAndroid

Questions about this item

Does the Snapdragon 8 Gen 2 in this S911U support 5G on AT&T's network?

Yes, the S911U model is built for AT&T 5G and the Snapdragon 8 Gen 2 modem handles the carrier's bands.

What size nano-SIM tray does the 6.1 inch Galaxy S23 use?

The S23 uses a standard nano-SIM tray; the S911U is a single-SIM device with no microSD slot.

How do I move data into this phone during the first Android 13 setup?

Use the USB-C cable and Smart Switch on the welcome screen; the step people miss is tapping "Receive data" on the new phone before connecting.

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