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Samsung Galaxy S21 5G in Phantom Gray, flat slab with matte finish and triple rear cameras

SAMSUNG

SAMSUNG Galaxy S21 5G AT&T Phantom Gray 128GB

SKU CH-WV2E-8JB28

An AT&T 5G smartphone with a 6.2" 120 Hz display, 64 MP rear camera, 8K video, 8 GB RAM and 128 GB storage

  • ProcessorQualcomm SM8350 Snapdragon 888 5G
  • Storage drive128 GB
  • Connection optionsYes
  • Operating systemAndroid
  • Form factorSmart Phones
  • Technology type2G/3G/4G LTE/5G
  • 2 inch 120Hz display for smooth scrolling
  • 64MP rear camera captures detailed photos
  • 8K video recording with 33MP frame grabs
  • Octa-core 2.8GHz processor with 8GB RAM for fast performance
  • 128GB storage holds apps and media

Built for AT&T 5G

The Samsung Galaxy S21 5G SM-G991 arrives new and locked to AT&T in Phantom Gray. It targets users who want a flagship Android experience on a single carrier without a contract. The 6.2 inch Dynamic AMOLED 2X panel runs at 1080 x 2400 and a 120 Hz refresh rate. Gorilla Glass Victus protects the front and back.

Sustained everyday pace

An octa-core processor clocked at 2.8 GHz paired with 8 GB of RAM keeps multitasking smooth during long sessions. The 120 Hz display intelligently lowers its refresh rate to conserve power when static content is shown. Samsung rates the battery as all-day intelligent, meaning it adapts to usage patterns rather than draining at a fixed rate. Thermal throttling is managed by the vapor-chamber cooling system built into the chassis.

128 GB fixed storage

Internal capacity is 128 GB with no microSD slot, so buyers who need more space for 8K video or large app libraries must rely on cloud offload. The 64 MP triple rear camera records 8K at 24 fps and can extract 33 MP stills from footage. Single Take captures multiple formats with one shutter press. Front camera is 10 MP for selfies and video calls.

How it compares

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

Price $137.99
Cheaper than about 67% 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 lineSamsung Galaxy S21 5G
Model nameSM-G991
Part numberSM-G991
Product typeCell Phone
Product colorGray
Processor
ProcessorQualcomm SM8350 Snapdragon 888 5G
Core configurationOcta Core
CPU clock speed2.8
Memory
RAM capacity8 GB
Storage
Storage drive128 GB
Display
TouchscreenYes
Main screen size6.2 in (15.7 cm)
Screen resolution1080 × 2400
Outer display size6.2
Audio & video
Back camera64 MP
Selfie camera10 MP
SoundYes
Connectivity
Connection optionsYes
Technology type2G/3G/4G LTE/5G
Wi-Fi capabilityYes
BluetoothYes
4G networkLTE
Power
Battery typeNon-Removable Lithium Ion
Size & build
Form factorSmart Phones
Product weight0.4 lb (0.18 kg)
Software
Operating systemAndroid

Questions about this item

How warm does the Galaxy S21 5G get when the 120 Hz display and 2.8 GHz octa-core processor run all day?

The Dynamic AMOLED 2X panel adjusts its refresh rate intelligently, and the processor balances performance with efficiency, so the phone stays comfortable during extended use.

What charger and cable do I need to power the 128 GB Phantom Gray model out of the box?

The handset uses USB-C Power Delivery; any certified USB-C charger and cable will charge the 128 GB unit, but no charger is included in the package.

Will my existing nano-SIM and microSD cards work with the SM-G991 on AT&T's 5G network?

The SM-G991 accepts a single nano-SIM for AT&T 5G service; it does not have a microSD slot, so the 128 GB internal storage is fixed.

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