Home Phone comparison Samsung Galaxy Z Flip 6 and Samsung Galaxy S21 - Which is better?

Samsung Galaxy Z Flip 6 vs Samsung Galaxy S21

79 out 100
Samsung Galaxy Z Flip 6
VS
65 out 100
Samsung Galaxy S21
Samsung Galaxy Z Flip 6
Samsung Galaxy S21

Compared 2 smartphones : Samsung Galaxy Z Flip 6 Manufactured in July, 2024, with display 6.7 with chipsetQualcomm Snapdragon 8 Gen 3, vs Samsung Galaxy S21, Manufactured in February, 2021 with chipsetSamsung Exynos 2100. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy Z Flip 6
  • Larger display: 6.7in
  • Higher pixel density: 426ppi
  • Newer Bluetooth version: 5.3 vs 5
  • Supports DisplayPort
Reasons to choose Samsung Galaxy S21
  • Lighter design: 169g vs 187g

Versions

Available versions and configurations
Memory Options - 12/128 GB
- 12/256 GB
- 12/512 GB		 - 8/128 GB
- 8/256 GB

Review

Key Specs Samsung Galaxy Z Flip 6 and Samsung Galaxy S21
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Samsung Galaxy Z Flip 6
vs
Samsung Galaxy S21

Display

Display quality comparison
Type Dynamic AMOLED Dynamic AMOLED
Size 6.7 in 6.2 in
Resolution 1080x2640 pixels 1080x2400 pixels
Aspect ratio 22:9 20:9
Pixel density 426 ppi 421 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes (48-120 Hz)
Max brightness 1600 nits 800 nits
HDR support Yes HDR10+ Yes HDR10+
Screen-to-body ratio 85.4 % 85.9 %
Features - DCI-P3
- Always-On Display		 - DCI-P3
- Always-On Display
Display test
Peak brightness (auto)
Samsung Galaxy Z Flip 6
1371 nits
Samsung Galaxy S21
854 nits
sRGB gamut97.6 %99.5 %
PWM (Flicker)120 Hz240 Hz
Response time2 ms5 ms
Contrast∞ Infinite∞ Infinite
Sources: NotebookCheck [Samsung Galaxy Z Flip 6], [Samsung Galaxy S21]

Design & Build

Design and ergonomics comparison
Height 165.1 mm (6.5 in) 151.7 mm (5.97 in)
Width 71.9 mm (2.83 in) 71.2 mm (2.8 in)
Thickness 6.9 mm (0.27 in) 7.9 mm (0.31 in)
Weight 187 g (6.6 oz) 169 g (5.96 oz)
Water resistance IP48 IP68
Cooling system Vapor chamber n/a
Back panel Glass Plastic
Frame Metal Metal
Colors - White
- Black
- Silver
- Blue
- Yellow		 - White
- Gray
- Pink
- Purple
Fingerprint sensor Yes In-Button Yes In-Display
Screen-to-body ratio
Samsung Galaxy Z Flip 6
85.4 %
Samsung Galaxy S21
85.9 %

Performance

Testing Samsung Galaxy Z Flip 6 and Samsung Galaxy S21 In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Gen 3 Samsung Exynos 2100
Max Frequency 3390 MHz 2900 MHz
CPU Cores 8 (1 + 3 + 2 + 2) 8 (1 + 3 + 4)
Architecture - 2/2.27 (Cortex-A520)
- 2/2.96 (Cortex-A720)
- 3/3.15 (Cortex-A720)
- 1/3.3 (Cortex-X4)		 - 4/2.2 (Cortex-A55)
- 3/2.81 (Cortex-A78)
- 1/2.91 (Cortex-X1)
Process TSMC Samsung
Transistor Size 4 nm 5 nm
Neural Processor Hexagon Yes
Graphics Adreno 750 Mali-G78 MP14
GPU Cores 1536 896
GPU Frequency 1000 MHz 854 MHz
FLOPS 2774 GFLOPS 1530.4 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy Z Flip 6
2247
Samsung Galaxy S21
1331
Geekbench 6 (Multi-Core)
Samsung Galaxy Z Flip 6
6857
Samsung Galaxy S21
3593
Geekbench 6 (Single-Core)22471331
Geekbench 6 (Multi-Core)68573593
Geekbench Compute (GPU)13050n/a
Sources: Geekbench v6 [Samsung Galaxy Z Flip 6]
AnTuTu 10
AnTuTu 10
Samsung Galaxy Z Flip 6
1852243
Samsung Galaxy S21
903780
CPU439300253391
GPU794881281676
Memory319119158352
UX298943210361
NanoReview Score1852243903780
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy Z Flip 6
16078
Samsung Galaxy S21
5715
Max Surface Temp.n/a38.9 °C
Stabilityn/a66 %
Graphics Testn/a34 fps
Graphics Scoren/a5715
Sources: 3DMark [Samsung Galaxy Z Flip 6], [Samsung Galaxy S21]
PCMark 3.0
PCMark 3.0
Samsung Galaxy Z Flip 6
17364
Samsung Galaxy S21
13123
Writing score2278316101
Web score1700711909
Video editing81087097
Data manipulation1528010153
NanoReview Score1736413123

Memory

RAM
RAM Size 12 GB 8 GB
Memory Type LPDDR5 LPDDR5
Memory Frequency 3200 MHz 2750 MHz
Channels 4 2
Storage
Storage Capacity- 256 GB
- 512 GB		- 128 GB
- 256 GB
Storage TypeUFS 4.0UFS 3.1
Memory CardNoNo

Software

OS Android 14 Android 11 (Upgradeable to Android 14)
OS Size 25.6 GB 28.1 GB
UI Skin One UI 6.1.1 One UI 6.0

Battery

Volume 4000 mAh 4000 mAh
Max Charging Power 25 W 25 W
Battery Type Li-Po Li-ion
Removable No No
Wireless Charging Yes (15 W) Yes (15 W)
Reverse Charging Yes (Wireless) Yes (Wireless)
Fast Charging Yes (44% in 30 min) Yes (55% in 50 min)
Full Charge Time 1:41 h 1:35 h
Battery Life Test
Battery Life
Samsung Galaxy Z Flip 6
18:21
Samsung Galaxy S21
17:54
Web Browsing05:56 h06:01 h
Video Playback13:24 h11:06 h
Games04:18 h04:21 h
Standby Mode89 h95 h

Main camera

Matrix 50 MP 12 MP
Photo resolution 8160x6120 pixels 4000x3000 pixels
Zoom Digital Optical, 1.1x
Flash LED Dual LED
Stabilization Optical Optical
8K Recording No Up to 24FPS
4K Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 240 fps (1080p) 960 fps (720p)
Wide-angle lens 123 ° 120 °
Lenses count Standard: 50 MP
Ultra-wide: 12 MP		 Standard: 12 MP
Telephoto: 64 MP
Ultra-wide: 12 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP12 MP
Aperturef/1.8f/1.8
Focal length23 mm26 mm
SensorSamsung ISOCELL GN3Sony IMX555
Sensor size1/1.571/1.76
Pixel size1 μm1.8 μm
AutofocusPhase autofocus (Dual Pixel)Phase autofocus (Dual Pixel)
StabilizationOpticalOptical
Telephoto
Matrixn/a64 MP
Aperturen/af/2.0
Focal lengthn/a28 mm
Sensorn/aSamsung Bright S5KGW2
Sensor sizen/a1/1.72
Pixel sizen/a0.8 μm
Stabilizationn/aOptical
Ultra-wide lens
Matrix12 MP12 MP
Aperturef/2.2f/2.2
Focal length13 mm13 mm
SensorSamsung ISOCELL 3LUSony IMX563
Sensor size1/3.21/2.55
Pixel size1.12 μm1.4 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Samsung Galaxy Z Flip 6
132
Samsung Galaxy S21
129
Video quality
Samsung Galaxy Z Flip 6
128
Samsung Galaxy S21
137
Overall camera score
Samsung Galaxy Z Flip 6
132
Samsung Galaxy S21
133
Bokeh7070
Preview7672
Zoom124126
Sources: DxOMark [Samsung Galaxy Z Flip 6], [Samsung Galaxy S21]

Front camera

Matrix 10 MP 10 MP
Photo resolution 3648x2736 pixels 3872x2592 pixels
Aperture f/2.2 f/2.2
Focal length 23 mm 26 mm
Sensor Samsung ISOCELL 3J1 Sony IMX374
Sensor size 1/3.0 1/3.24
Pixel size 1.22 μm 1.22 μm
Autofocus No Phase autofocus (Dual Pixel)
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 2160p (4K) at 60 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 6E (802.11 a/b/g/n/ac/ax) Wi-Fi 6 (802.11 a/b/g/n/ac/ax)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.3 5
Bluetooth features LE LE, A2DP
USB type USB Type-C USB Type-C
USB version 3.2 3.2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- USB-Host mode
- OTG
DisplayPort Yes DP 1.2 n/a
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port No No
Connectivity
SIM Count*12
SIM TypeNanoNano
SIM Moden/aDual SIM Standby
eSIM Support *YesYes
Hybrid SlotNoNo
2G BandsGSM850,GSM900,DCS1800,PCS1900GSM 850, 900, 1800, 1900 MHz
3G BandsUMTS B1(2100),B2(1900),B4(AWS),B5(850),B8(900)WCDMA Band 1, 2, 4, 5, 8
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B14/B18/B19/B20/B25/B26/B28/B29/B30/B38/B39/B40/B41/B48/B66/B71)LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B32/B38/B39/B40/B41/B66)
LTE categoryn/a24
5G SupportYesYes

Sound

Speakers Stereo Stereo
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes Yes
Speaker Test
Max Volume
Samsung Galaxy Z Flip 6
90.8 dB
Samsung Galaxy S21
87 dB

Other

Class Flagship Flagship
Announced July, 2024 yr January, 2021 yr
Release Date July, 2024 yr February, 2021 yr
Launch Price ($) 1099 800
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included No n/a
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Samsung Galaxy Z Flip 6 the clear winner in this comparison.

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