Refurbished iPhone 14 Pro from $461
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Samsung Galaxy S21 Ultra vs Samsung Galaxy S24 Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

Comparison mode:
Specs Size
Differences only
9.1
Samsung Galaxy S21 Ultra
7.2
Samsung Galaxy S24
Samsung Galaxy S21 Ultra Samsung Galaxy S24
Released · Jan 29, 2021
Released · Jan 31, 2024
6.8-inch · 3200x1440px
6.2-inch · 2340x1080px
Quad camera
Triple camera
12GB · 128GB
8GB · 128GB
5000 mAh
4000 mAh
Check prices Check prices

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) 		5.79 x 2.78 x 0.30 inches (~0.35 inches with camera bump)
147 x 70.6 x 7.6 mm (~8.85 mm with camera bump)
Weight
8.04 oz (229.0 g) 5.93 oz (168.0 g)
Materials
Back: Glass (Corning Gorilla Glass Victus)
Frame: Aluminum 		Back: Glass (Corning Gorilla Glass Victus 2)
Frame: Aluminum
Resistance
Water, Dust; IP68 Water, Dust; IP68
Biometrics
2D Face unlock, Ultrasonic in-screen fingerprint Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Phantom black, Silver Onyx Black, Marble Grey, Cobalt Violet, Amber Yellow, Jade Green, Sandstone Orange, Sapphire Blue

Display

Size
6.8-inch 6.2-inch
Resolution
3200x1440px, 20:9 ratio, 516 PPI 2340x1080px, 19.5:9 ratio, 416 PPI
Technology
Dynamic AMOLED Dynamic AMOLED
Refresh rate
120Hz (adaptable) 120Hz
Screen-to-body
89.33 % 90.87 %
Peak brightness
1500 cd/m2 (nit) 2600 cd/m2 (nit)
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus 2), Ambient light sensor, Proximity sensor

Hardware

System chip
Qualcomm Snapdragon 888 SM8350 (5 nm) Qualcomm Snapdragon 8 Gen 3 SM8650-AB (4 nm)
Processor
Octa-core
1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680 		Octa-core
1x 3.39GHz Cortex-X4 + 3x 3.1GHz Cortex-A720 + 2x 2.9GHz Cortex-A720 + 2x 2.2GHz Cortex-A520
GPU
Adreno 660 Adreno 750
RAM
12GB (LPDDR5) 8GB (LPDDR5X)
Internal storage
128GB (UFS 3.1) 128GB (UFS 3.1)
Storage expansion
not expandable not expandable
OS
Android (14, 13, 12, 11), One UI Android (15, 14), One UI

Battery

Capacity
5000 mAh 4000 mAh
Type
Li - Polymer Li - Ion
Charging
Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging, Qi and Powermat wireless charging, Reverse wireless charging Fast charging, Qi wireless charging, Reverse wireless charging
Charge speed
Wired: 25.0W
Wireless: 15.0W 		Wired: 25.0W
Wireless: 15.0W
PhoneArena Battery Tests
Battery Life Estimate
6h 15min
Browsing
14h 43min
Video
8h 52min
Gaming
8h 40min
Battery Life Estimate
6h 37min
Browsing
16h 18min
Video
8h 20min
Gaming
10h 45min
Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Quad camera Triple 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 		50 MP (OIS, PDAF)
Sensor name: Samsung GN3
Aperture size: F1.8
Focal length: 24 mm
Sensor size: 1/1.56"
Pixel size: 1.0 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 		12 MP (Ultra-wide)
Sensor name: Sony IMX564
Aperture size: F2.0
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 		10 MP (Telephoto)
Sensor name: Samsung S5K3K1
Aperture size: F2.4
Focal Length: 67 mm
Sensor size: 1/3.94"
Pixel size: 1.0 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 LED
Video recording
7680x4320 (8K UHD) (24 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps), 1280x720 (HD) (960 fps)
OIS, HDR, Hyperlapse, Video light, EIS 		7680x4320 (8K UHD) (30 fps), 3840x2160 (4K UHD) (60 fps), 1920x1080 (Full HD) (240 fps)
HDR, Continuous autofocus, Picture-taking during video recording, 10-bit HDR
Front
40 MP (PDAF, HDR), Video capture: 3840x2160 (4K UHD) (60 fps) 12 MP (PDAF, HDR), Video capture: 3840x2160 (4K UHD) (60 fps)
PhoneArena Camera Tests
N/A
Overall
N/A
Photo
N/A
Video
152
Overall
156
Photo
147
Video
Learn more on our PhoneArena Camera Test Results page

Connectivity & Features

Bluetooth
5.1 5.3
WLAN
802.11 a,b,g,n,ac,ax(Wi-Fi 6),dual-band
MIMO, Wi-Fi Direct, Hotspot 		802.11 a,b,g,n,ac,ax(Wi-Fi 6),Wi-Fi 6E
Wi-Fi Direct, Hotspot
USB
Type-C, USB 3.2 Type-C, USB 3.2
Hearing aid compatible
M3/T3 M3/T4
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer Accelerometer, Gyroscope, Compass, Barometer
Other
NFC, ANT+ NFC

Multimedia

Headphones
No 3.5mm jack No 3.5mm jack
Speakers
Earpiece, Multiple speakers Earpiece, Multiple speakers
Features
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus
Screen mirroring
Wireless screen share
Radio
FM, Stereo, RDS
Additional microphone(s)
Noise cancellation, Video recording

Cellular

5G
Bands n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38, n40, n41, n66, n75, n77, n78, SA, NSA, mmWave, 5G Ready
4G (FDD)
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 14(700 PS), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 30(2300 WCS), 66(AWS-3), 71(600) Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 32(1500 L-band), 66(AWS-3)
4G (TDD)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600) Bands 38(2600), 39(1900+), 40(2300)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900) Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A Pro Cat 20 (2000/150 Mbit/s) LTE-A Pro Cat 20 (2000/150 Mbit/s)
SIM type
Nano SIM Dual Nano SIM + eSIM

Regulatory Approval

FCC approval
Date approved: Dec 22, 2020
FCC ID value: A3LSMG998U 		Date approved: Nov 30, 2023
FCC ID value: A3LSMS921U
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 		Head: 1.23 W/kg
Body: 1.14 W/kg
Simultaneous Transmission: 1.58 W/kg

Buyers information

MSRP
$ 1200 / € 1399 $ 800 / € 899
In The Box
C to C Data Cable, Ejection Pin USB-C cable, SIM ejector tool, Paperwork

Availability

Officially announced
Jan 14, 2021 Jan 17, 2024

Alternative variants

with 256GB storage
Internal storage 256GB
Colors Phantom black
MSRP $ 1250
With 256GB internal storage
Internal storage 256GB (UFS 4.0)
MSRP $ 860
with 512GB storage
RAM 16GB
Internal storage 512GB
Colors Phantom black
MSRP $ 1380
International
System chip Exynos 2400 (4 nm)
Processor Deca-core
1x 3.2GHz Cortex-X4 + 2x 2.9GHz Cortex-A720 + 3x 2.6GHz Cortex-A720 + 4x 1.95GHz Cortex-A520
GPU Xclipse 940
for Europe
System chip Samsung Exynos 2100 (5 nm)
Processor Octa-core
1x 2.91GHz Cortex-X1 + 3x 2.81GHz Cortex-A78 + 4x 2.2GHz 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
FCC OKs Cingular\'s purchase of AT&T Wireless