Samsung Galaxy S21 vs A33 5G

Here we compared two smartphones: the 6.2-inch Samsung Galaxy S21 (with Exynos 2100) that was released on January 14, 2021, against the Samsung Galaxy A33 5G, which is powered by Exynos 1280 and came out 14 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 S21
  • 85% better performance in AnTuTu Benchmark (768K versus 414K)
  • Better camera quality (According to DxOMark rating)
  • Higher display refresh rate – 120 Hz
  • Compatible with the latest Wi-Fi 6 wireless networks
  • Supports wireless charging up to 15W
  • The rear camera has a 1.1x optical zoom
  • Waterproof body (IP68 classification)
  • Uses a faster type of memory: LPDDR5 2750 MHz
  • Delivers 18% higher peak brightness (862 against 732 nits)
  • Slow-motion recording at 960FPS
  • Ready for eSIM technology
Reasons to consider the Samsung Galaxy A33 5G
  • Comes with 1000 mAh larger battery capacity: 5000 vs 4000 mAh
  • Shows 25% longer battery life (31:53 vs 25:31 hours)
  • Newer Bluetooth version (v5.1)
  • Expandable storage via MicroSD card up to 1024GB
  • The phone is 1-year and 2-months newer
We may receive a commission from Amazon for purchases made using the links below, but this has no bearing on our assessment methodology.

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 Super AMOLED
Size 6.2 inches 6.4 inches
Resolution 1080 x 2400 pixels 1080 x 2400 pixels
Aspect ratio 20:9 20:9
PPI 421 ppi 411 ppi
Refresh rate 120 Hz 90 Hz
Max rated brightness 800 nits 500 nits
Max rated brightness in HDR - 1000 nits
HDR support Yes, HDR10+ No
Screen protection Gorilla Glass Victus Corning Gorilla Glass 5
Screen-to-body ratio 87.2% 83.7%
Display features - DCI-P3
- Always-On Display
- DCI-P3
Display tests
RGB color space 99.5% 98.3%
PWM 240 Hz 366 Hz
Response time 5 ms 1 ms
Contrast ∞ Infinity ∞ Infinity
Peak brightness test (auto)
Galaxy S21 +18%
862 nits
732 nits
Sources: NotebookCheck [3], [4]

Design and build

Height 151.7 mm (5.97 inches) 159.7 mm (6.29 inches)
Width 71.2 mm (2.8 inches) 74 mm (2.91 inches)
Thickness 7.9 mm (0.31 inches) 8.1 mm (0.32 inches)
Weight 169 g (5.96 oz) 186 g (6.56 oz)
Waterproof IP68 IP67
Rear material Plastic Plastic
Frame material Metal Plastic
Colors White, Gray, Pink, Purple White, Black, Blue, Yellow
Fingerprint scanner Yes, in-display Yes, in-display
Screen-to-body ratio
87.2%

Performance

Tests of Samsung Galaxy S21 and Samsung Galaxy A33 5G in the benchmarks
SoC
Chipset Samsung Exynos 2100 Samsung Exynos 1280
Max. clock 2900 MHz 2400 MHz
CPU cores 8 (1 + 3 + 4) 8 (2 + 6)
Architecture - 4 cores at 2.2 GHz: Cortex-A55
- 3 cores at 2.8 GHz: Cortex-A78
- 1 core at 2.9 GHz: Cortex-X1
- 6 cores at 2 GHz: Cortex-A55
- 2 cores at 2.4 GHz: Cortex-A78
Lithography process 5 nanometers 5 nanometers
Graphics Mali-G78 MP14 Mali-G68
GPU clock 760 MHz 1000 MHz

Benchmarks

Geekbench 5 (Single-Core)
Galaxy S21 +41%
1034
Geekbench 5 (Multi-Core)
Galaxy S21 +71%
3256
AnTuTu Benchmark 9
Galaxy S21 +85%
768433
414606
CPU 203417 117008
GPU 272156 116615
Memory 144766 77740
UX 146598 102076
Total score 768433 414606
3DMark Wild Life Performance
Galaxy S21 +152%
5685
Stability 66% 98%
Graphics test 34 FPS 13 FPS
Graphics score 5685 2257
PCMark 3.0 score 13727 10790
Sources: 3DMark [3], [4]

Memory

RAM
RAM size 8 GB 6, 8 GB
Memory type LPDDR5 LPDDR4X
Memory clock 2750 MHz -
Channels 2 2
Storage
Storage size 128, 256 GB 128, 256 GB
Storage type UFS 3.1 UFS 2.2
Memory card No MicroSD
Memory card max. size - Up to 1024 GB

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 28.1 GB 26 GB

Battery

Specifications
Capacity 4000 mAh 5000 mAh
Charge power 25 W 25 W
Battery type Li-Ion Li-Po
Replaceable No No
Wireless charging Yes (15 W) No
Reverse charging Yes, (wireless) No
Fast charging Yes (55% in 50 min) Yes (50% in 30 min)
Full charging time 1:35 hr 1:15 hr
Battery life tests
Web browsing 07:17 hr 10:17 hr
Watching video 12:26 hr 15:03 hr
Gaming 04:20 hr 05:45 hr
Standby 92 hr 105 hr
General battery life
25:31 hr
31:53 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 12 megapixels 48 megapixels
Image resolution 4000 x 3000 8000 x 6000
Zoom Optical, 1.1x Digital
Flash Dual LED LED
Stabilization Optical Optical
8K video recording Up to 24FPS No
4K video recording Up to 60FPS Up to 30FPS
1080p video recording Up to 60FPS Up to 60FPS
Slow motion 960 FPS (720p) 480 FPS (720p)
Angle of widest lens 120° 123°
Lenses 3 (12 MP + 64 MP + 12 MP) 4 (48 MP + 8 MP + 5 MP + 2 MP)
Wide (main) lens - 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
- 48 MP
- Aperture: f/1.8
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2.0", Sony IMX582 (Exmor-RS CMOS)
- Phase autofocus
- Optical stabilization
Telephoto lens - 64 MP
- Aperture: f/2.0
- Focal length: 28 mm
- Pixel size: 0.8 micron
- Sensor: 1/1.72", Samsung Bright S5KGW2 (ISOCELL Plus CMOS)
- Phase autofocus (Dual Pixel)
- Optical stabilization
-
Ultra-wide lens - 12 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.4 micron
- Sensor: 1/2.55", Sony IMX563 (Exmor-RS CMOS)
- Phase autofocus (Dual Pixel)
- 8 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
- Sensor: 1/4.0", Sony IMX355 (Exmor-RS CMOS)
Macro lens - - 5 MP
- Aperture: f/2.4
Depth lens - - 2 MP
- Aperture: f/2.4
Camera features - Bokeh mode
- Pro mode
- RAW support
- Bokeh mode
- Pro mode
Samples Photo samples of Samsung Galaxy S21 from DxOMark Photo samples of Samsung Galaxy A33 5G from DxOMark
Selfie camera
Megapixels 10 megapixels 13 megapixels
Image resolution 3872 x 2592 4160 x 3120
Aperture f/2.2 f/2.2
Focal length 26 mm -
Pixel size 1.22 microns -
Sensor type CMOS CMOS
Sensor size 1/3.24" -
Video resolution 2160p (4K) at 60 FPS 2160p (4K) at 30 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 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
- Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5.1
Bluetooth features LE, A2DP PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP
USB type USB Type-C USB Type-C
USB version 3.2 2
USB features - Charging
- USB-Storage mode
- USB-Host mode
- OTG
- Charging
- USB-Storage mode
- OTG
GPS GPS, GLONASS, Beidou, Galileo GPS, GLONASS, Beidou, Galileo, QZSS
NFC* Yes Depends on the region
Infrared port No No
Network
Number of SIM* 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* Yes No
Hybrid slot No Yes
LTE Cat* 24 18
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
87 dB
88.7 dB

Other

Category Flagship Mid-range
Announced January 2021 March 2022
Release date February 2021 April 2022
SAR (head) 0.46 W/kg -
SAR (body) 1.51 W/kg -
Sensors - Hall-effect sensor
- Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Hall-effect 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

After analyzing all the data, we think that the Samsung Galaxy S21 is definitely a better buy.

Cast your vote

So, which phone would you choose?
23 (46.9%)
26 (53.1%)
Total votes: 49

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