Samsung Galaxy Z Fold 6 vs Samsung Galaxy S21 Ultra Specs Comparison

Availability

Officially announced
Jul 10, 2024	Jan 14, 2021
Prices (MSRP)
$1900 | €1900	$1200 | €1399

Design

Dimensions
6.04 x 5.22 x 0.22 inches (~0.26 inches with camera bump) 153.5 x 132.6 x 5.6 mm (~6.7 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
6.04 x2.68 x0.47 inches (153.5 x 68.1 x 12.1 mm)
Weight
8.43 oz / 239.0 g	8.04 oz / 229.0 g
Materials
Back: Glass (Corning Gorilla Glass Victus 2) Frame: Aluminum	Back: Glass (Corning Gorilla Glass Victus) Frame: Aluminum
Resistance
Water, Dust; IP48	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
Silver Shadow, Pink, Navy, Crafted Black, White	Phantom black, Silver

Display

Size
7.6-inch, 90.56% screen-to-body	6.8-inch, 89.33% screen-to-body
Type
Dynamic AMOLED, 120Hz, HDR, 2600 nits	Dynamic AMOLED, 120Hz, HDR, 1500 nits
Resolution
2160x1856px, 21.9:18 ratio, 375 PPI	3200x1440px, 20:9 ratio, 516 PPI
Protection
	Corning Gorilla Glass Victus
Features
Folding inside the device, HDR support, Ambient light sensor, Proximity sensor
Front cover display
6.3 inches 2376 x968 px Dynamic AMOLED 120Hz refresh rate, Scratch-resistant glass (Corning Gorilla Glass Victus 2), Ambient light sensor, Proximity senso

PhoneArena Display Test

Bright Max (20% APL)
2520 (Excellent)	Untested
Bright Min
1 (Excellent)	1.5 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 8 Gen 3 for Galaxy SM8650-AC (4 nm)	Snapdragon 888 SM8350 (5 nm)
Processor
Octa-core 1x3.40GHz Cortex-X4 3x3.15G​Hz Cortex-A720 2x2.9​6GHz Cortex-A720 2x2.2​7GHz Cortex-A520	Octa-core 1x2.84GHz Kryo 680 3x2.42GHz Kryo 680 4x1.80GHz Kryo 680
GPU
Adreno 750	Adreno 660
Memory
12GB (LPDDR5X)/256GB (UFS 4.0) 12GB/512GB 12GB/1024GB	12GB (LPDDR5)/128GB (UFS 3.1) 12GB/256GB 16GB/512GB
Storage expansion
not expandable	not expandable
OS
Android (15, 14)	Android (14, 13, 12, 11)

PhoneArena Performance Test

GeekBench 6 Single
2252	1117
GeekBench 6 Multi
6796	3312
3D Mark High
4785	1963
3D Mark Low
2692	1179

Learn more on our PhoneArena Performance Test Results page.

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: 15.0W	Wired: 25.0W Wireless: 15.0W

PhoneArena Battery Tests

Battery Life Estimate

5h 33min

Browsing

12h 42min

Video

7h 1min

Gaming

10h 30min

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
50 MP (OIS, PDAF) Aperture size: F1.8 Focal length: 23 mm Sensor size: 1/1.57" Pixel size: 1.0 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) Aperture size: F2.2 Focal Length: 12 mm Sensor size: 1/3.2" Pixel size: 1.12 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
10 MP (Telephoto) Optical zoom: 3.0x Aperture size: F2.4 Focal Length: 66 mm Sensor size: 1/3.94" Pixel size: 1.0 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
8K UHD (30 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) Continuous autofocus, EIS, 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)

PhoneArena Camera Tests

142

Overall

147

Photo

136

Video

N/A

Overall

N/A

Photo

N/A

Video

Learn more on our PhoneArena Camera Test Results page

Connectivity & Features

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

Cellular

5G Bands
n1, n2, n5, n7, n25, n28, n41, n66, n71, n77, n78, n258, n260, n261, SA, NSA, Sub-6, mmWave	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, 29, 30, 66	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, 48	38, 39, 40, 41, 46, 48
3G Bands
1, 2, 4, 5, 8	1, 2, 4, 5, 8
Data Speed
LTE-A Pro Cat 20 (2000/150 Mbit/s), LTE-A, HSDPA+ (4G) 42.2 Mbit/s	LTE-A Pro Cat 20 (2000/150 Mbit/s)
SIM type
Dual Nano SIM + eSIM	Nano SIM

Regulatory Approval

FCC approval
Date approved: May 31, 2024 FCC ID value: A3LSMF956U	Date approved: Dec 22, 2020 FCC ID value: A3LSMG998U
Measured SAR
Head: 1.08 W/kg Body: 1.14 W/kg Simultaneous Transmission: 1.58 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

Alternative variants

With 512GB internal storage

Memory	512GB
Prices (MSRP)	$2019

with 256GB storage

Memory	256GB
Colors	Phantom black
Prices (MSRP)	$1250

With 1TB internal storage

Memory	1024GB
Prices (MSRP)	$2259

with 512GB storage

Memory	16GB/512GB
Colors	Phantom black
Prices (MSRP)	$1380

for Europe

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

Links

Full specifications
Samsung Galaxy Z Fold 6 Specs	Samsung Galaxy S21 Ultra Specs
PhoneArena Review
Samsung Galaxy Z Fold 6 Review	Samsung Galaxy S21 Ultra Review
User Reviews
Samsung Galaxy Z Fold 6 User Reviews	Samsung Galaxy S21 Ultra User Reviews