Samsung Galaxy S21 vs Samsung Galaxy Z Flip 4 Specs Comparison

Availability

Officially announced
Jan 14, 2021	Aug 10, 2022
Prices (MSRP)
$800	$1000

Design

Dimensions
5.97 x 2.80 x 0.31 inches 151.7 x 71.2 x 7.9 mm	6.50 x 2.83 x 0.27 inches 165.2 x 71.9 x 6.9 mm
Folded
	(84.9 x 71.9 x 17.1 mm)
Weight
6.03 oz / 171.0 g	6.60 oz / 187.0 g
Materials
Back: Plastic Frame: Aluminum	Back: Glass Frame: Aluminum
Resistance
Water, Dust; IP68	Yes; IPX8
Biometrics
2D Face unlock, Ultrasonic in-screen fingerprint	Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key	Left: Volume control, Lock/Unlock key
Colors
Phantom pink, Violet, Gray, White

Display

Size
6.2-inch, 86.06% screen-to-body	6.7-inch, 85.52% screen-to-body
Type
Dynamic AMOLED, 120Hz, HDR, 1300 nits	Dynamic AMOLED, 120Hz, HDR
Resolution
2400x1080px, 20:9 ratio, 424 PPI	2640x1080px, 22:9 ratio, 426 PPI
Protection
Corning Gorilla Glass Victus
Features
	Folding inside the device, HDR support, Ambient light sensor, Proximity sensor
Front cover display
	1.9 inches 260 x512 px

PhoneArena Display Test

Bright Max (20% APL)
Untested	Untested
Bright Min
1.2 (Good)	0.9 (Excellent)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
Snapdragon 888 (5 nm)	Snapdragon 8+ Gen 1 SM8475
Processor
Octa-core 1x2.84GHz Kryo 680 3x2.42GHz Kryo 680 4x1.80GHz Kryo 680	Octa-core 1x3.19GHz Cortex-X2 3x2.75G​Hz Cortex-A710 4x1.8​0GHz Cortex-A510
GPU
Adreno 660	Adreno 670
Memory
8GB (LPDDR5)/128GB (UFS 3.0) 8GB/256GB	8GB (LPDDR5)/128GB (UFS 3.1) 8GB/256GB 8GB/512GB
Storage expansion
not expandable	not expandable
OS
Android (13, 12, 11)	Android (12)

PhoneArena Performance Test

GeekBench 6 Single
Untested	1051
GeekBench 6 Multi
Untested	2683
3D Mark High
Untested	2094
3D Mark Low
Untested	968

Learn more on our PhoneArena Performance Test Results page.

Battery

Type
4000 mAh, Li - Polymer	3700 mAh
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

4h 28min

Browsing

7h 47min

Video

7h 36min

Gaming

7h 9min

Battery Life Estimate

5h 0min

Browsing

11h 40min

Video

7h 20min

Gaming

6h 31min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Triple camera	Dual 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	12 MP (OIS, PDAF) Aperture size: F1.8 Pixel size: 1.8 μm
Second camera
12 MP (Ultra-wide, Autofocus) Aperture size: F2.2 Focal Length: 13 mm Sensor size: 1/2.55" Pixel size: 1.4 μm	12 MP (Ultra-wide) Aperture size: F2.4 Pixel size: 1.12 μm
Third camera
64 MP (Telephoto, OIS, PDAF) Aperture size: F2.0 Focal Length: 29 mm Sensor size: 1/1.7" Pixel size: 0.8 μm
Flash
LED	LED
Video recording
8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps) OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS	4K UHD (60 fps), 1080p (240 fps), 720p
Front
10 MP (PDAF, HDR) Video capture: 4K UHD (60 fps)	Yes Folded: 10 MP

PhoneArena Camera Tests

N/A

Overall

N/A

Photo

N/A

Video

131

Overall

136

Photo

125

Video

Learn more on our PhoneArena Camera Test Results page

Connectivity & Features

Bluetooth
5.0	5.2
WLAN
a,b,g,n,ac,Wi-Fi 6,dual-band MIMO, Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac, ax	a,b,g,n,ac Wi-Fi Direct, Hotspot 802.11 a, b, g, n, ac
USB
Type-C, USB 3.2	Type-C
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Ambient light sensor, Proximity sensor
Hearing aid compatible
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, 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
Additional microphone(s)
	Noise cancellation

Cellular

5G Bands
n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave	5G Ready
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, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS	LTE-A, HSDPA+ (4G) 42.2 Mbit/s
SIM type
Nano SIM	Nano SIM, eSIM

Regulatory Approval

FCC approval
Date approved: Dec 08, 2020 FCC ID value: A3LSMG991U	Date approved: Apr 20, 2023 FCC ID value: A3LSMF721U
Measured SAR
Head: 0.36 W/kg Body: 1.08 W/kg Simultaneous Transmission: 3.96 W/kg Wireless Router: 1.09 W/kg Phablet: 2.49 W/kg	Head: 0.89 W/kg Body: 0.94 W/kg Simultaneous Transmission: 1.59 W/kg Wireless Router: 1.06 W/kg

Alternative variants

with 256GB storage

Memory	256GB

With 512GB internal storage

Memory	512GB

for Europe

System chip	Samsung Exynos 2100 (5 nm)
Processor	Octa-core 2900 MHz 1x2.91GHz Cortex-X1 3x2.81G​Hz Cortex-A78 4x2.2G​Hz Cortex-A55
GPU	Mali G78 MP14
Weight	5.96 oz / 169.0 g
5G Bands	SA, NSA, Sub-6
FCC approval	Date approved: Dec 18, 2020 FCC ID value: A3LSMG991B
Measured SAR	Head: 0.42 W/kg Body: 0.94 W/kg Simultaneous Transmission: 3.96 W/kg Wireless Router: 1.34 W/kg Phablet: 2.37 W/kg

With 256GB internal storage

Memory	256GB

Discover more

Full Specs Samsung Galaxy S21 Specs PA Review Samsung Galaxy S21 Review

Full Specs Samsung Galaxy Z Flip 4 Specs PA Review Samsung Galaxy Z Flip 4 Review