Samsung Galaxy S21 Ultra

Full Specifications

This device is also known as Samsung SM-G998U1

I want it 2 users
I have it 9 users
I had it 15 users

The Samsung Galaxy S21 Ultra is most commonly compared with these phones:

Availability

Officially announced Jan 14, 2021
Prices (MSRP) $1200 | €1399
This device has different variants: View all

Design

Dimensions 6.50 x 2.98 x 0.35 inches (~0.37 inches with camera bump)
165.1 x 75.6 x 8.9 mm (~9.4 mm with camera bump)
Weight 8.04 oz / 229.0 g
Materials Back: Glass (Corning Gorilla Glass Victus)
Frame: Aluminum
Resistance Water, Dust; IP68
Biometrics 2D Face unlock, Ultrasonic in-screen fingerprint
Keys Right: Volume control, Lock/Unlock key
Colors Phantom black, Silver
This device has different variants: View all

Display

Size 6.8-inch, 89.33% screen-to-body
Type Dynamic AMOLED, 120Hz, HDR, 1500 nits
Resolution 3200x1440px, 20:9 ratio, 516 PPI
Protection Corning Gorilla Glass Victus
PhoneArena Display Test
Bright Max (20% APL) Untested
Bright Min 1.5 (Good)

Hardware

System chip Snapdragon 888 SM8350 (5 nm)
Processor Octa-core
1x2.84GHz Kryo 680
3x2.42GHz Kryo 680
4x1.80GHz Kryo 680
GPU Adreno 660
Memory 12GB (LPDDR5)/128GB (UFS 3.1)
12GB/256GB
16GB/512GB
Storage expansion not expandable
OS Android (14, 13, 12, 11)
This device has different variants: View all
PhoneArena Performance Test
GeekBench 6 Single 1117
GeekBench 6 Multi 3312
3D Mark High 1963
3D Mark Low 1179

Battery

Type 5000 mAh, Li - Polymer
Charging Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging
Qi and Powermat wireless charging, Reverse wireless charging
Charge speed Wired: 25.0W
Wireless: 15.0W
PhoneArena Battery Test
Battery Life Estimate: 6h 15min
Browsing: 14h 43min
Gaming: 8h 40min
Video: 8h 52min

Camera

Rear Quad camera
Main camera 108 MP (OIS, Laser and PDAF)
Aperture size: F1.8
Focal length: 24 mm
Sensor size: 1/1.33"
Pixel size: 0.8 μm
Second camera 12 MP (Ultra-wide, PDAF)
Aperture size: F2.2
Focal Length: 13 mm
Sensor size: 1/2.55"
Pixel size: 1.4 μm
Third camera 10 MP (Telephoto, OIS, PDAF)
Optical zoom: 3.0x
Aperture size: F2.4
Focal Length: 70 mm
Sensor size: 1/3.2"
Pixel size: 1.22 μm
Fourth camera 10 MP (Telephoto, Periscope, OIS, PDAF)
Optical zoom: 3.0x
Aperture size: F2.4
Focal Length: 70 mm
Sensor size: 1/3.2"
Pixel size: 1.22 μm
Flash LED
Video recording 8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps)
OIS, HDR, Hyperlapse, Video light, EIS
Front 40 MP (PDAF, HDR)
Video capture: 4K UHD (60 fps)

Connectivity & Features

Bluetooth 5.1
WLAN a,b,g,n,ac,Wi-Fi 6,dual-band
MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, ax
USB Type-C, USB 3.2
Sensors Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor
Hearing aid compatible M3/T3
Location GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other NFC, ANT+

Multimedia

Headphones No 3.5mm jack
Speakers Earpiece, Multiple speakers
Features 32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus

Cellular

5G Bands n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave
4G (FDD) Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 66, 71
4G (TDD) Bands 38, 39, 40, 41, 46, 48
3G Bands 1, 2, 4, 5, 8
Data Speed LTE-A Pro Cat 20 (2000/150 Mbit/s)
SIM type Nano SIM
This device has different variants: View all

Regulatory Approval

FCC approval Date approved: Dec 22, 2020
FCC ID value: A3LSMG998U
Measured SAR Head: 0.77 W/kg
Body: 1.02 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 1.16 W/kg
Phablet: 3.15 W/kg
This device has different variants: View all

Alternative variants

with 256GB storage
Differences from the main variant:
Memory 256GB
Colors Phantom black
Prices (MSRP) $1250
with 512GB storage
Differences from the main variant:
Memory 16GB/512GB
Colors Phantom black
Prices (MSRP) $1380
for Europe
Differences from the main variant:
System chip Samsung Exynos 2100 (5 nm)
Processor Octa-core
1x2.91GHz Cortex-X1
3x2.81G​Hz Cortex-A78
4x2.2G​Hz Cortex-A55
GPU Mali G78 MP14
Weight 8.01 oz / 227.0 g
5G Bands SA, NSA, Sub-6
FCC approval Date approved: Dec 22, 2020
FCC ID value: A3LSMG998B
Measured SAR Head: 0.16 W/kg
Body: 0.72 W/kg
Simultaneous Transmission: 1.59 W/kg
Wireless Router: 1.34 W/kg
Phablet: 3.86 W/kg
Despite our efforts to provide full and correct Samsung Galaxy S21 Ultra specifications, there is always a possibility of admitting a mistake. If you see any wrong or incomplete data, please

LET US KNOW.

If you are interested in using our specs commercially, check out our Phone specs database licensing page.
Overall User Rating
1 person recommends this phone.
Build quality
8.9
Camera quality
8.4
Performance
9.4
Display
9.6
Battery life and charging
8.3
Value for money
8

Related News

Samsung Galaxy S21 users, you might want to check your phones very soon
Following Samsung’s terrible handling of the One UI 7 update, the South Korean company seems to have finally found its rhythm and is now rolling out the software upgrade to at least 2-3 devices almost every day.After the Galaxy Z Fold 4, Galaxy Z Fli...
, by Cosmin Vasile, 1
Samsung Galaxy S21 users, you might want to check your phones very soon
Samsung stops releasing monthly updates for the Galaxy S21 series
Samsung Galaxy S21 family | Image credit: PhoneArenaUnsurprisingly, Samsung confirmed that the Galaxy S21 series is too old to continue to receive updates monthly. While this doesn’t mean that Galaxy S21 owners will no longer get security patches, it...
, by Cosmin Vasile, 2
Samsung stops releasing monthly updates for the Galaxy S21 series
The Best Phones: My top picks, tried and tested
Which is the best phone to buy right now, in 2025? Should you get the latest iPhone 16 Pro Max, Google's Pixel 9 Pro XL or the new Samsung Galaxy S25 Ultra a better choice? Or... is there some low-key great smartphone that you might not even know abo...
, by Victor Hristov, 245
The Best Phones: My top picks, tried and tested
Should you buy the Galaxy S21 Ultra in 2023 - a comprehensive review
A few weeks ago, a rather close relative of mine approached me with a casual request that made me question both the limits of my patience and their ability to navigate the modern technological world."What phone should I buy," they looked at me quizzi...
, by Peter Kostadinov, 7
Should you buy the Galaxy S21 Ultra in 2023 - a comprehensive review

Discover More

FCC OKs Cingular\'s purchase of AT&T Wireless