Samsung Galaxy A21s vs Galaxy A03

Here we compared two budget smartphones: the 6.5-inch Samsung Galaxy A21s (with Exynos 850) that was released on May 15, 2020, against the Samsung Galaxy A03, which is powered by Unisoc T606 and came out 19 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 A21s
  • Modern USB Type-C port
  • Fingerprint scanner
  • More energy-efficient CPU – Exynos 850
  • Delivers 17% higher peak brightness (491 against 419 nits)
  • Has an ultra-wide angle camera lens
Reasons to consider the Samsung Galaxy A03
  • More recent OS version: Android 13 versus 12
  • The phone is 1-year and 7-months newer
  • 60% faster in single-core GeekBench 5 test: 305 and 191 points
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 PLS TFT PLS TFT
Size 6.5 inches 6.5 inches
Resolution 720 x 1600 pixels 720 x 1600 pixels
Aspect ratio 20:9 20:9
PPI 270 ppi 270 ppi
Refresh rate 60 Hz 60 Hz
Max rated brightness 540 nits 400 nits
HDR support No No
Screen protection Tempered glass Tempered glass
Screen-to-body ratio 82.8% 81.8%
Display tests
RGB color space 88.4% 96%
PWM 500 Hz Not detected
Response time 30.4 ms 45 ms
Contrast 1500:1 1641:1
Peak brightness test (auto)
491 nits
419 nits
Sources: NotebookCheck [3], [4]

Design and build

Height 163.6 mm (6.44 inches) 164.2 mm (6.46 inches)
Width 75.3 mm (2.96 inches) 75.9 mm (2.99 inches)
Thickness 8.9 mm (0.35 inches) 9.1 mm (0.36 inches)
Weight 192 g (6.77 oz) 196 g (6.91 oz)
Waterproof No No
Rear material Plastic Plastic
Frame material Plastic Plastic
Colors Black, Blue, Red Black, Blue, Red
Fingerprint scanner Yes, rear No
Screen-to-body ratio
82.8%
81.8%

Performance

Tests of Samsung Galaxy A21s and Samsung Galaxy A03 in the benchmarks
SoC
Chipset Samsung Exynos 850 Unisoc T606
Max. clock 2000 MHz 1600 MHz
CPU cores 8 (8) 8 (2 + 6)
Architecture - 8 cores at 2 GHz: Cortex-A55 - 6 cores at 1.6 GHz: Cortex-A55
- 2 cores at 1.6 GHz: Cortex-A75
L3 cache - 1 MB
Lithography process 8 nanometers 12 nanometers
Graphics Mali-G52 MP1 Mali-G57 MP1
GPU clock 820 MHz 650 MHz
FLOPS ~126 GFLOPS -

Benchmarks

Geekbench 5 (Single-Core)
Galaxy A03 +60%
305
Geekbench 5 (Multi-Core)
1113
1046
AnTuTu Benchmark 9
146208
151891
CPU 43099 60739
GPU 24795 24375
Memory 35711 33135
UX 41901 32172
Total score 146208 151891
3DMark Wild Life Performance
423
Stability 98% 97%
Graphics test 2 FPS 2 FPS
Graphics score 423 404
PCMark 3.0 score 5466 6672
Sources: 3DMark [3], [4]

Memory

RAM
RAM size 3, 4 GB 3, 4 GB
Memory type LPDDR4X LPDDR4X
Memory clock 1866 MHz -
Channels 2 2
Storage
Storage size 32, 64 GB 32, 64, 128 GB
Storage type eMMC 5.1 eMMC 5.1
Memory card MicroSD MicroSD
Memory card max. size Up to 512 GB Up to 1024 GB

Software

Operating system Android 10 (Can be upgraded to Android 12) Android 11 (Can be upgraded to Android 13)
ROM One UI 4.1 One UI Core 5.0
OS size 12 GB 13.5 GB

Battery

Specifications
Capacity 5000 mAh 5000 mAh
Charge power 15 W 15 W
Battery type Li-Po Li-Ion
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes (50% in 60 min) Yes (20% in 40 min)
Full charging time 2:10 hr 3:35 hr
Battery life tests
Web browsing 12:34 hr -
Watching video 14:21 hr -
Gaming 05:26 hr -
Standby 120 hr -
General battery life
35:07 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 48 megapixels 48 megapixels
Image resolution 8000 x 6000 8000 x 6000
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K video recording No No
4K video recording No No
1080p video recording Up to 30FPS Up to 30FPS
Slow motion No No
Angle of widest lens 123° -
Lenses 4 (48 MP + 8 MP + 2 MP + 2 MP) 2 (48 MP + 2 MP)
Wide (main) lens - 48 MP
- Aperture: f/2.0
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2.0" (CMOS)
- Phase autofocus
- 48 MP
- Aperture: f/1.8
- Phase autofocus
Ultra-wide lens - 8 MP
- Aperture: f/2.2
- Pixel size: 1.12 micron
- Sensor: 1/4.0" (CMOS)
-
Macro lens - 2 MP
- Aperture: f/2.4
-
Depth lens - 2 MP
- Aperture: f/2.4
- 2 MP
- Aperture: f/2.4
Camera features - Bokeh mode - Bokeh mode
Selfie camera
Megapixels 13 megapixels 5 megapixels
Image resolution 4128 x 3096 2560 x 1960
Aperture f/2.2 f/2.2
Pixel size 1.12 microns -
Sensor type CMOS CMOS
Sensor size 1/3.1" -
Video resolution 1080p (Full HD) at 30 FPS 1080p (Full HD) at 30 FPS

Connectivity

Wi-Fi standard Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
- Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5
Bluetooth features PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP LE, A2DP
USB type USB Type-C Micro USB
USB version 2 2
USB features - Charging
- USB-Storage mode
- OTG
- Charging
- USB-Storage mode
GPS GPS, GLONASS, Beidou, Galileo GPS, GLONASS, Beidou, Galileo, QZSS
NFC* Yes No
Infrared port No No
Network
Number of SIM* 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* No No
Hybrid slot No No
LTE Cat* 13 4
5G support No No

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio Yes -
Dolby Atmos Yes Yes
Speakers test
Max. loudness
79.5 dB
81.9 dB

Other

Category Budget Budget
Announced May 2020 November 2021
Release date June 2020 January 2022
SAR (head) 0.23 W/kg -
SAR (body) 1.38 W/kg -
Sensors - Hall-effect sensor
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Proximity sensor
- Accelerometer
- Ambient light sensor
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

If the performance, battery life, camera, and connectivity are more important to you, then choose the Samsung Galaxy A21s. But if the display, software, and design are more of a priority – go for the Samsung Galaxy A03.

Cast your vote

So, which phone would you choose?
35 (70%)
15 (30%)
Total votes: 50

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