Samsung Galaxy Z Fold 3 vs Samsung Galaxy S21 Ultra Specs Comparison

Design

Dimensions
6.23 x 5.04 x 0.25 inches (~0.30 inches with camera bump) 158.2 x 128.1 x 6.4 mm (~7.7 mm with camera bump)	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)
Folded
6.22 x2.64 x0.56 inches (158.2 x 67.1 x 14.4 mm)
Weight
9.56 oz (271.0 g)	8.04 oz (229.0 g)
Materials
Back: Glass (Corning Gorilla Glass Victus) Frame: Aluminum	Back: Glass (Corning Gorilla Glass Victus) Frame: Aluminum
Resistance
Dust; IPX8	Water, Dust; IP68
Biometrics
Fingerprint (touch)	2D Face unlock, Ultrasonic in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key	Right: Volume control, Lock/Unlock key
Colors
Phantom Black, Phantom Green, Phantom Silver	Phantom black, Silver

Display

Size
7.6-inch	6.8-inch
Resolution
2208x1768px, 22.5:18 ratio, 372 PPI	3200x1440px, 20:9 ratio, 516 PPI
Technology
Super AMOLED	Dynamic AMOLED
Refresh rate
120Hz	120Hz (adaptable)
Screen-to-body
88.57 %	89.33 %
Peak brightness
1200 cd/m2 (nit)	1500 cd/m2 (nit)
Features
Folding inside the device, Ambient light sensor, Proximity sensor	HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor
Front cover display
6.2 inches 2268 x832 px Super AMOLED 120Hz refresh rate, Folding inside the device, HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity senso

Hardware

System chip
Qualcomm Snapdragon 888 SM8350 (5 nm)	Qualcomm Snapdragon 888 SM8350 (5 nm)
Processor
Octa-core 1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680	Octa-core 1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680
GPU
Adreno 660	Adreno 660
Memory
12GB (LPDDR5)/256GB (UFS 3.1)	12GB (LPDDR5)/128GB (UFS 3.1)
Storage expansion
not expandable	not expandable
OS
Android (14, 13, 12, 11)	Android (14, 13, 12, 11)

Battery

Type
4400 mAh, Li - Polymer	5000 mAh, Li - Polymer
Charging
Fast charging Qi wireless charging, Reverse wireless 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: 11.0W	Wired: 25.0W Wireless: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

4h 30min

Browsing

8h 15min

Video

6h 58min

Gaming

8h 24min

Battery Life Estimate

6h 15min

Browsing

14h 43min

Video

8h 52min

Gaming

8h 40min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Triple camera	Quad camera
Main camera
12 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 26 mm Sensor size: 1/1.76" Pixel size: 1.8 μm	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 (Telephoto, OIS, PDAF) Optical zoom: 2.0x Aperture size: F2.4 Focal Length: 52 mm Sensor size: 1/3.6" Pixel size: 1.0 μm	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
12 MP (Ultra-wide, OIS) Aperture size: F2.2 Focal Length: 12 mm Pixel size: 1.12 μm	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	LED
Video recording
Yes HDR, Continuous autofocus, 10-bit HDR	8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Video light, EIS
Front
4 MP (Under-screen, HDR) Folded: 10 MP Video capture: 4K UHD (30 fps)	40 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)

Connectivity & Features

Bluetooth
5.2	5.1
WLAN
802.11 a,b,g,n,ac,ax(Wi-Fi 6) Wi-Fi Direct, Hotspot	802.11 a,b,g,n,ac,ax(Wi-Fi 6),dual-band MIMO, Wi-Fi Direct, Hotspot
USB
Type-C, USB 3.2	Type-C, USB 3.2
Hearing aid compatible
M3/T4	M3/T3
Location
GPS, A-GPS, Glonass, Galileo, Cell ID, Wi-Fi positioning	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Sensors
Accelerometer, Gyroscope, Compass, Barometer	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer
Other
NFC	NFC, ANT+

Multimedia

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

Cellular

5G
Bands n2, n5, n25, n41, n66, n71, n260, SA, NSA, Sub-6, mmWave	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(2300 WCS), 66(AWS-3), 71(600)	Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30(2300 WCS), 66(AWS-3), 71(600)
4G (TDD)
Bands 38, 39, 40, 41, 46, 48	Bands 38, 39, 40, 41, 46, 48
3G
Bands 1, 2, 5, 8, 9	Bands 1, 2, 4, 5, 8
Data Speed
LTE-A Pro Cat 20 (2000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s	LTE-A Pro Cat 20 (2000/150 Mbit/s)
SIM type
Nano SIM, eSIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: Jun 23, 2021 FCC ID value: A3LSMF926U	Date approved: Dec 22, 2020 FCC ID value: A3LSMG998U
Measured SAR
Head: 0.73 W/kg Body: 0.86 W/kg Simultaneous Transmission: 1.22 W/kg Wireless Router: 0.79 W/kg	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

Buyers information

MSRP
$ 1799 / € 1899	$ 1200 / € 1399
In The Box
USB-C cable, SIM ejector tool, Paperwork	C to C Data Cable, Ejection Pin

Availability

Officially announced
Aug 11, 2021	Jan 14, 2021

Alternative variants

With 512GB internal storage

Memory	512GB
MSRP	$ 1899

with 256GB storage

Memory	256GB
Colors	Phantom black
MSRP	$ 1250

With Dual SIM and eSIM

SIM type	Dual Nano SIM + eSIM

with 512GB storage

Memory	16GB/512GB
Colors	Phantom black
MSRP	$ 1380

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

Links

Full specifications
Samsung Galaxy Z Fold 3 Specs	Samsung Galaxy S21 Ultra Specs
PhoneArena Review
Samsung Galaxy Z Fold 3 Review	Samsung Galaxy S21 Ultra Review
User Reviews
Samsung Galaxy Z Fold 3 User Reviews	Samsung Galaxy S21 Ultra User Reviews