Samsung Galaxy Z Flip 3 5G vs S21 FE 5G

Here we compared two flagship smartphones: the 6.7-inch Samsung Galaxy Z Flip 3 5G (with Qualcomm Snapdragon 888 5G) that was released on August 11, 2021, against the Samsung Galaxy S21 FE 5G, which is powered by Qualcomm Snapdragon 888 and came out 5 months after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Samsung Galaxy Z Flip 3 5G
  • Newer Bluetooth version (v5.1)
  • Has a 0.3 inch larger screen size
  • Delivers 18% higher peak brightness (939 against 793 nits)
  • Ready for eSIM technology
Reasons to consider the Samsung Galaxy S21 FE 5G
  • The rear camera has a 3x optical zoom
  • Waterproof body (IP68 classification)
  • Comes with 1200 mAh larger battery capacity: 4500 vs 3300 mAh
  • Shows 32% longer battery life (26:34 vs 20:09 hours)
  • Has 2 SIM card slots
  • 14% faster in single-core GeekBench 5 test: 1115 and 982 points

Review

Display
Screen quality, color accuracy, brightness
Performance
CPU/GPU performance in apps and games
Battery
Battery life, charging type and speed
Camera
Photo and video recording quality
Connectivity
Networks, ports, data transmission
NanoReview score
Final comparison evaluation

Value for money

You can enter your local price of these phones (in USD or any other currency) and click on the "Calculate" button to see which one has a better value for money.
Price

Tests and specifications

Comparison table of technical specifications and tests

Display

Type Dynamic AMOLED Dynamic AMOLED
Size 6.7 inches 6.4 inches
Resolution 1080 x 2640 pixels 1080 x 2400 pixels
Aspect ratio 21.9:9 20:9
PPI 426 ppi 401 ppi
Refresh rate 120 Hz 120 Hz
Max rated brightness 850 nits 420 nits
Max rated brightness in HDR 1200 nits 1200 nits
HDR support Yes, HDR10+ Yes, HDR10+
Screen protection Gorilla Glass Victus Gorilla Glass Victus
Screen-to-body ratio 84.7% 89.6%
Display features - DCI-P3
- Always-On Display
- DCI-P3
- Always-On Display
Display tests
RGB color space 95.3% 97%
PWM 242 Hz 247 Hz
Response time 6.5 ms 6 ms
Contrast ∞ Infinity ∞ Infinity
Peak brightness test (auto)
939 nits
793 nits
Sources: NotebookCheck [3], [4]

Design and build

Height 166 mm (6.54 inches) 155.7 mm (6.13 inches)
Width 72.2 mm (2.84 inches) 74.5 mm (2.93 inches)
Thickness 6.9 mm (0.27 inches) 7.9 mm (0.31 inches)
Weight 183 gramm (6.46 oz) 177 gramm (6.24 oz)
Waterproof IPX8 IP68
Rear material Glass Plastic
Frame material Metal Metal
Colors White, Black, Gray, Green, Pink White, Gray, Green, Purple
Fingerprint scanner Yes, in home button Yes, in-display
Screen-to-body ratio

Performance

Tests of Samsung Galaxy Z Flip 3 5G and Samsung Galaxy S21 FE 5G in the benchmarks
SoC
Chipset Qualcomm Snapdragon 888 5G Qualcomm Snapdragon 888
Max. clock 2840 MHz 2840 MHz
CPU cores 8 (1 + 3 + 4) 8 (1 + 3 + 4)
Architecture - 4 cores at 1.8 GHz: Kryo 680 Silver (Cortex-A55)
- 3 cores at 2.42 GHz: Kryo 680 Gold (Cortex-A78)
- 1 core at 2.84 GHz: Kryo 680 Prime (Cortex-X1)
- 4 cores at 1.8 GHz: Kryo 680 Silver (Cortex-A55)
- 3 cores at 2.42 GHz: Kryo 680 Gold (Cortex-A78)
- 1 core at 2.84 GHz: Kryo 680 Prime (Cortex-X1)
L3 cache 4 MB 4 MB
Lithography process 5 nanometers 5 nanometers
Graphics Adreno 660 Adreno 660
GPU clock 840 MHz 840 MHz
FLOPS ~1720 GFLOPS ~1720 GFLOPS
Memory
RAM size 8 GB 6, 8 GB
Memory type LPDDR5 LPDDR5
Memory clock 2750 MHz 2750 MHz
Channels 2 2
Storage
Storage size 128, 256 GB 128, 256 GB
Storage type UFS 3.1 UFS 3.1
Memory card No No

Benchmarks

Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
AnTuTu Benchmark 9
CPU 206991 194989
GPU 227511 281856
Memory 138296 133252
UX 123353 147872
Total score 700525 758336
3DMark Wild Life Performance
Stability 70% 69%
Graphics test 27 FPS 34 FPS
Graphics score 4573 5788
PCMark 3.0 score 13708 12290
AnTuTu Benchmark Ranking (145th and 111th place)
Sources: 3DMark [3], [4]

Software

Operating system Android 11 (Can be upgraded to Android 13) Android 12 (Can be upgraded to Android 13)
ROM One UI 5.0 One UI 5.0
OS size 29 GB 17.5 GB

Battery

Specifications
Capacity 3300 mAh 4500 mAh
Charge power 25 W 25 W
Battery type Li-Ion Li-Ion
Replaceable No No
Wireless charging Yes (10 W) Yes (15 W)
Reverse charging Yes, (wireless) Yes, (wireless)
Fast charging Yes (40% in 30 min) Yes (51% in 30 min)
Full charging time 1:30 hr 1:15 hr
Battery life tests
Web browsing 06:58 hr 07:42 hr
Watching video 09:12 hr 13:05 hr
Gaming 03:32 hr 05:29 hr
Standby 64 hr 91 hr
General battery life
26:34 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 12 megapixels 12 megapixels
Image resolution 4000 x 3000 4032 x 3024
Zoom Digital Optical, 3x
Flash LED LED
Stabilization Optical Optical
8K video recording No No
4K video recording Up to 60FPS Up to 60FPS
1080p video recording Up to 60FPS Up to 60FPS
Slow motion 960 FPS (720p) 960 FPS (720p)
Angle of widest lens 123° 123°
Lenses 2 (12 MP + 12 MP) 3 (12 MP + 8 MP + 12 MP)
Wide (main) lens - 12 MP
- Aperture: f/1.8
- Focal length: 27 mm
- Pixel size: 1.4 micron
- Sensor: 1/2.55", Sony IMX563 (Exmor-RS CMOS)
- Phase autofocus (Dual Pixel)
- Optical stabilization
- 12 MP
- Aperture: f/1.8
- Focal length: 26 mm
- Pixel size: 1.8 micron
- Sensor: 1/1.76", Sony IMX555 (Exmor-RS CMOS)
- Phase autofocus (Dual Pixel)
- Optical stabilization
Telephoto lens - - 8 MP
- Aperture: f/2.4
- Focal length: 76 mm
- Pixel size: 1 micron
- Sensor: 1/4.5", Hynix Hi847 (CMOS)
- Phase autofocus
- Optical stabilization
Ultra-wide lens - 12 MP
- Aperture: f/2.2
- Focal length: 22 mm
- Pixel size: 1.12 micron
- Sensor: 1/3.06", Sony IMX258 (Exmor-RS CMOS)
- 12 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
- Sensor: 1/3.0", Sony IMX258 (Exmor-RS CMOS)
Camera features - Bokeh mode
- Pro mode
- RAW support
- Bokeh mode
- Pro mode
- RAW support
Samples Photo samples of Samsung Galaxy Z Flip 3 5G from DxOMark Photo samples of Samsung Galaxy S21 FE 5G from DxOMark
Selfie camera
Megapixels 10 megapixels 32 megapixels
Image resolution 3648 x 2736 6464 x 4864
Aperture f/2.4 f/2.2
Focal length 26 mm 26 mm
Pixel size 1.22 microns 0.8 microns
Sensor type Exmor-RS CMOS Exmor-RS CMOS
Sensor size 1/3.2" 1/2.74"
Video resolution 2160p (4K) at 30 FPS 2160p (4K) at 60 FPS

DxOMark camera tests

Photo quality
Video quality
Generic camera score

Connectivity

Wi-Fi standard Wi-Fi 6 (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 5.1 5
Bluetooth features LE, A2DP LE
USB type USB Type-C USB Type-C
USB version 2 3.2
USB features - Charging
- USB-Storage mode
- OTG
- Charging
- USB-Storage mode
- OTG
GPS GPS, GLONASS, Beidou, Galileo GPS, GLONASS, Beidou, Galileo
NFC* Yes Yes
Infrared port No No
Network
Number of SIM* 1 2
Type of SIM card Nano Nano
Multi SIM mode - Standby
eSIM support* Yes No
Hybrid slot No No
LTE Cat* 20 19
5G support Yes Yes

Sound

Speakers Stereo Stereo
Headphone audio jack No No
FM radio No No
Dolby Atmos Yes Yes
Speakers test
Max. loudness

Other

Category Flagship Flagship
Announced August 2021 January 2022
Release date August 2021 January 2022
SAR (head) 0.86 W/kg 0.95 W/kg
SAR (body) 1.58 W/kg 1.48 W/kg
Sensors - Hall-effect sensor
- Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Hall-effect sensor
- Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

These smartphones have a lot in common, but we would recommend the Samsung Galaxy S21 FE 5G. It has a better battery life, camera, connectivity, and design.

Cast your vote

So, which phone would you choose?
22 (29.7%)
52 (70.3%)
Total votes: 74

User opinions

You can share your opinion or ask a question in the comments below
Promotion