Samsung Galaxy S21 vs Samsung Galaxy Z Flip 6 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.

8.5
Samsung Galaxy S21
7.0
Samsung Galaxy Z Flip 6
Samsung Galaxy S21 Samsung Galaxy Z Flip 6
Released · Jan 29, 2021
Released · Jul 24, 2024
6.2-inch · 2400x1080px
6.7-inch · 2640x1080px
12 MP Main · 10 MP Selfie
50 MP Main · 10 MP Selfie
8GB · 128GB
8GB · 256GB
4000 mAh
4000 mAh
Check prices Check prices

Display

Size
6.2-inch 6.7-inch
Resolution
2400x1080px, 20:9 ratio, 424 PPI 2640x1080px, 22:9 ratio, 426 PPI
Technology
Dynamic AMOLED Dynamic AMOLED
Refresh rate
120Hz (adaptive) 120Hz
Screen-to-body
86.06 % 85.52 %
Peak brightness
1300 cd/m2 (nit) 2600 cd/m2 (nit)
Features
HDR support, Scratch-resistant glass (Corning Gorilla Glass Victus), Ambient light sensor, Proximity sensor Folding inside the device, HDR support, Ambient light sensor, Proximity sensor
Front cover display
3.4 inches
720 x748 px
Super AMOLED
Scratch-resistant glass (Corning Gorilla Glass Victus 2)

Hardware

System chip
Qualcomm Snapdragon 888 (5 nm) Qualcomm Snapdragon 8 Gen 3 SM8550-AC (4 nm)
Processor
Octa-core
1x 2.84GHz Kryo 680 + 3x 2.42GHz Kryo 680 + 4x 1.80GHz Kryo 680
64-bit
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
8GB (LPDDR5) 8GB (LPDDR5X)
Internal storage
128GB (UFS 3.0), not expandable 256GB (UFS 4.0), not expandable
OS
Android (13, 12, 11), Samsung One UI Android (14), One UI

Battery

Capacity
4000 mAh 4000 mAh
Type
Li - Polymer, Not user replaceable Li - Ion, Not user replaceable
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
Max charge speed
Wired: 25.0W
Wireless: 15.0W
Wired: 25.0W
Wireless: 10.0W
PhoneArena Battery Tests
Battery Life Estimate
4h 28min
Browsing
7h 47min
Video
7h 36min
Gaming
7h 9min
Battery Life Estimate
6h 45min
Browsing
16h 10min
Video
9h 8min
Gaming
10h 7min

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
50 MP (OIS, PDAF)
Aperture size: F1.8
Focal length: 23 mm
Sensor size: 1/1.57"
Pixel size: 1.0 μm
Second camera
64 MP (Telephoto, OIS, PDAF)
Aperture size: F2.0
Focal Length: 29 mm
Sensor size: 1/1.7"
Pixel size: 0.8 μm
12 MP (Ultra-wide)
Aperture size: F2.2
Focal Length: 13 mm
Sensor size: 1/3.2"
Pixel size: 1.12 μm
Third camera
12 MP (Ultra-wide, Autofocus)
Aperture size: F2.2
Focal Length: 13 mm
Sensor size: 1/2.55"
Pixel size: 1.4 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, Continuous autofocus, Video light, EIS
Yes
HDR, Continuous autofocus, Picture-taking during video recording
Front
10 MP (PDAF, HDR), Video capture: 3840x2160 (4K UHD) (60 fps) 10 MP, Video capture: 3840x2160 (4K UHD) (60 fps)
PhoneArena Camera Tests
N/A
Overall
N/A
Photo
N/A
Video
137
Overall
141
Photo
133
Video

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
(165.1 x 71.9 x 6.9 mm)
thickness with camera 0.32 inches (8.2 mm)
Folded
3.35 x2.83 x0.58 inches (85.1 x 71.9 x 14.9 mm)
Weight
6.03 oz(171.0 g) 6.60 oz(187.0 g)
Materials
Back: Plastic
Frame: Aluminum
Back: Glass (Corning Gorilla Glass Victus 2)
Frame: Aluminum
Resistance
Water, Dust; IP68 Water, Dust; IP48
Biometrics
2D Face unlock, Ultrasonic in-screen fingerprint Fingerprint (touch)
Keys
Right: Volume control, Lock/Unlock key Right: Volume control, Lock/Unlock key
Colors
Phantom pink, Violet, Gray, White Silver Shadow, Yellow, Blue, Mint, Crafted Black, White, Peach

Cellular

5G
Bands n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave Bands n1, n2, n5, n7, n25, n28, n41, n66, n71, n78, n258, n260, n261, SA, NSA, Sub-6, mmWave
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), 14(700 PS), 18(800 Lower), 19(800 Upper), 20(800 DD), 25(1900+), 26(850+), 28(700 APT), 29(700 d), 30(2300 WCS), 66(AWS-3)
4G (TDD)
Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 46, 48(3600) Bands 38(2600), 39(1900+), 40(2300), 41(2600+), 48(3600)
3G
Bands 1(2100), 2(1900), 4(1700/2100), 5(850), 8(900) Bands 1(2100), 4(1700/2100), 5(850), 8(900)
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS LTE-A Pro Cat 20 (2000/150 Mbit/s)
SIM type
Nano SIM Nano SIM, eSIM

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 aptX, aptX-HD
Screen mirroring
Wireless screen share Wireless screen share
Radio
FM, Stereo, RDS
Additional microphone(s)
Noise cancellation, Video recording Noise cancellation

Connectivity & Features

Bluetooth
5.0 5.3
Wi-Fi
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 (reversible), USB 3.2, Features: Charging, Headphones port, OTG, Video out Type-C (reversible), Features: Charging, OTG
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, Hall (for flip covers), Barometer
Other
NFC, ANT+ NFC

Regulatory Approval

FCC approval
Date approved: Dec 08, 2020
FCC ID value: A3LSMG991U
Date approved: May 28, 2024
FCC ID value: A3LSMF741U
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: 1.10 W/kg
Body: 1.19 W/kg
Simultaneous Transmission: 2.83 W/kg

Buyers information

MSRP
$ 800 $ 1100 / € 1199
In The Box
C to C Data Cable, Ejection Pin USB-C cable, SIM ejector tool, Paperwork

Availability

Officially announced
Jan 14, 2021 Jul 10, 2024

Alternative variants

with 256GB storage
Internal storage 256GB
With 512GB internal storage
Internal storage 512GB
for Europe
System chip Samsung Exynos 2100 (5 nm)
Processor Octa-core
2900 MHz
1x 2.91GHz Cortex-X1 + 3x 2.81GHz Cortex-A78 + 4x 2.2GHz Cortex-A55
64-bit
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
FCC OKs Cingular\'s purchase of AT&T Wireless