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Samsung Galaxy S21 Ultra 5G

 ·  ☕ 4 min read

Technical Specifications

Samsung Galaxy S21 Ultra 5G Features

  • Display: 6.8-inch QHD (3200 x 1440)
  • Snapdragon 888 / Exynos 2100
  • 12GB / 16GB RAM
  • 128GB / 256GB / 512GB Storage
  • Rear cameras: 108MP + 10MP + 10MP + 12MP
  • Front camera: 40MP
  • Battery: 5,000mAh
  • Dimensions: 165.1 x 75.6 x 8.9 mm
  • Weight: 227g

Samsung Galaxy S21 Ultra 5G Tech Specs

Network Technology



165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in)
227 g (Sub6), 229 g (mmWave) (8.01 oz)
Gorilla Glass Victus with aluminum frame
Single SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by)
IP68 dust/water resistant (up to 1.5m for 30 mins)
Stylus support


Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown


Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak)
6.8 inches, 112.1 cm2 (~89.8% screen-to-body ratio)
1440 x 3200 pixels, 20:9 ratio (~515 ppi density)
Corning Gorilla Glass Victus
Always-on display


Android 11, One UI 3.1
Qualcomm SM8350 Snapdragon 888 (USA/China) or Chipset Exynos 2100 (International)
Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680) (USA/China) or Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) (International)
GPU: Adreno 660 (USA/China) or Mali-G78 MP14 (International)

Storage and Memory

128GB 12GB RAM, 256GB 12GB RAM, 512GB 16GB RAM
UFS 3.1


Rear Camera
108 MP, f/1.8, 24mm (wide), 1/1.33", 0.8µm, PDAF, Laser AF, OIS
10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom
10 MP, f/2.4, 70mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom
12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video
LED flash, auto-HDR, panorama
8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS

Front Camera
40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF
Dual video call, Auto-HDR
4K@30/60fps, 1080p@30fps


Stereo speakers
32-bit/384kHz audio
Tuned by AKG


Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot
5.2 Bluetooth, A2DP, LE
FM radio (Snapdragon model only; market/operator dependent)
USB USB Type-C 3.2, USB On-The-Go


Fingerprint sensor (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Samsung DeX, Samsung Wireless DeX (desktop experience support)
Bixby natural language commands and dictation
Samsung Pay (Visa, MasterCard certified)
Ultra Wideband (UWB) support


Li-Ion 5000 mAh, non-removable
Fast charging 25W
USB Power Delivery 3.0
Fast Qi/PMA wireless charging 15W
Reverse wireless charging 4.5W
Up to 2 days battery life

Ratings and Reviews

CellAZ rating based on 390+ reviews
User Reviews
  • 4.2 of 5 at Walmart (290+ reviews)
  • 4.3 of 5 at Bestbuy (75+ reviews)
  • 4.3 of 5 at Target (25+ reviews)

Our Samsung Galaxy S21 Ultra 5G Review

✅ Reasons to buy

  • Design: Sleek design and matte finish (which helps prevent smeary fingerprints).
  • Camera: There is a huge camera unit on the back of the phone, which means the phone has five lenses. Of the S21 series, the Ultra has the best image quality in low-light. It can shoot 4K video at 60 fps. * Director view shows a live feed from the cameras and allows you to switch between them while recording video, single take mode automatically turns 15 second videos into photos, shorter videos, and gifs you can share with others.
  • Supports the S Pen: Among the first Samsung smartphones compatible with the Galaxy S Pens (sold separately). Using the pen can help you better navigate the features of this smartphone.
  • Intelligent Battery: Maximizes battery life by learning how you interact with the phone and adjusting how much battery is used.

❌ Reasons not to buy

  • Price: Even with special offers, this phone is expensive.
  • Camera Setup: Navigating the many camera features can be confusing

⚖️ The Verdict

It’s difficult to find something wrong with the G21 Ultra 5G. From its sleek design and improved security to camera performance and increased function, you will love Samsung’s 2021 flagship phone.

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Carmen G.
Carmen G.
Hi, I'm Carmen Gonzalez. I've been a passionate mobile phone enthusiast for years now and created cellAZ to share my knowledge and love of cellphones. Have fun touching glass, be in touch!

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