Home > Smartphone comparison > Galaxy A21s vs Realme 6 – which one to choose?

Samsung Galaxy A21s vs Realme 6

36 out of 100
Samsung Galaxy A21s
VS
43 out of 100
Realme 6
Samsung Galaxy A21s
Realme 6

Here we compared two smartphones: the 6.5-inch Samsung Galaxy A21s (with Exynos 850) that was released on May 15, 2020, against the Realme 6, which is powered by MediaTek Helio G90T and came out 2 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.

Select the amount of RAM to evaluate performance and value for money more precisely
Memory
  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery life
  6. Camera
  7. Comments

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Samsung Galaxy A21s
  • Comes with 700 mAh larger battery capacity: 5000 vs 4300 mAh
  • More energy-efficient CPU – Exynos 850
  • Delivers 16% higher peak brightness (496 against 429 nits)
  • More recent OS version: Android 12 versus 11
  • Supports Dolby Atmos sound technology
Reasons to consider the Realme 6
  • 95% better performance in AnTuTu Benchmark (502K versus 258K)
  • Higher display refresh rate – 90 Hz
  • 50% higher pixel density (405 vs 270 PPI)
  • Slow-motion recording at 240FPS
  • Has 2x more RAM: 4GB versus 2GB
  • Ability to record video in 4K resolution
  • Supports higher wattage charging (30W versus 15W)
  • Faster storage type - UFS 2.1 versus eMMC 5.1
  • 2.3x faster in single-core GeekBench 6 test: 676 and 300 points

Review

Evaluation of Samsung Galaxy A21s and Realme 6 crucial features
Display
Screen quality, color accuracy, brightness
Camera
Photo and video recording quality
Performance
CPU and memory performance (apps, system)
Gaming
Capabilities for playing modern games
Battery
Battery life, charging type and speed
Connectivity
Networks, ports, data transmission
Scores with a red asterisk (*) are approximate and may change in the future as we gather more data.
NanoReview Score
Final comparison evaluation
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Value for money (Beta)

To get an accurate value-for-money index, update the default prices with actual prices from your country’s retailers (for the selected memory configs) and press the "Calculate" button.
Currency
2 / 32 GB
VS
4 / 64 GB
109.2
(Excellent)
Value Index
195.2
(Excellent)

Tests and specifications

Comparison table of technical specifications and tests
Phone:
Galaxy A21s
vs
Realme 6

Display

Type PLS TFT IPS LCD
Size 6.5 inches 6.5 inches
Resolution 720 x 1600 pixels 1080 x 2400 pixels
Aspect ratio 20:9 20:9
PPI 270 ppi 405 ppi
Refresh rate 60 Hz 90 Hz
Adaptive refresh rate No No
Max rated brightness 540 nits 480 nits
HDR support No No
Touch sampling rate - 120 Hz
Screen protection Tempered glass Corning Gorilla Glass 3
Screen-to-body ratio 82.9% 84.2%
Display tests
RGB color space 88.4% 98.7%
PWM 500 Hz Not detected
Response time 30.4 ms 25.4 ms
Contrast 1500:1 991:1
Peak brightness test (auto)
Galaxy A21s +16%
496 nits
Realme 6
429 nits
Sources: NotebookCheck [3], [4]

Design and build

Height 163.6 mm (6.44 inches) 162.1 mm (6.38 inches)
Width 75.3 mm (2.96 inches) 74.8 mm (2.94 inches)
Thickness 8.9 mm (0.35 inches) 8.9 mm (0.35 inches)
Weight 192 g (6.77 oz) 191 g (6.74 oz)
Waterproof No No
Rear material Plastic Plastic
Frame material Plastic Plastic
Colors Black, Blue, Red White, Blue
Fingerprint scanner Yes, rear Yes, in-button
Screen-to-body ratio
Galaxy A21s
82.9%
Realme 6 +2%
84.2%

Performance

Chipset specifications of Samsung Galaxy A21s and Realme 6
SoC
Chipset Samsung Exynos 850 MediaTek Helio G90T
Max clock 2000 MHz 2050 MHz
CPU cores 8 (8) 8 (2 + 6)
Architecture - 8 cores at 2 GHz: Cortex-A55 - 6 cores at 2 GHz: Cortex-A55
- 2 cores at 2.05 GHz: Cortex-A76
Manufacturing Samsung TSMC
Lithography process 8 nanometers 12 nanometers
Neural processor (NPU) No MediaTek APU 2.0
GPU
Graphics Mali-G52 MP6 Mali-G76MC4
GPU shading units 16 96
GPU clock 1001 MHz 800 MHz
FLOPS ~48 GFLOPS ~153.6 GFLOPS

Benchmarks

Benchmark comparison of Samsung Galaxy A21s and Realme 6
Geekbench 6 (Single-Core)
Galaxy A21s
300
Realme 6 +125%
676
Geekbench 6 (Multi-Core)
Galaxy A21s
836
Realme 6 +105%
1717
Single-core score 300 676
Multi-core score 836 1717
Sources: Geekbench [3], [4]
AnTuTu Benchmark 11
Galaxy A21s
258064
Realme 6 +95%
502895
CPU 100392 201488
GPU 18008 52543
Memory 86289 97558
UX 53375 151306
Total score 258064 502895
Samples [4 tests] [6 tests]
PCMark 3.0
Web score 4948 -
Video editing 5163 -
Photo editing 8993 -
Data manipulation 3929 -
Writing score 5825 -
Submit your benchmark results

Recent User Tests

The latest benchmark tests that have been submitted by users
Samsung Galaxy A21s
DateBenchmarkResult
📘 2026-09-18 -> HABIBOAnTuTu 12304257
📘 2026-05-16 (Abdul ahad)AnTuTu 11258064
📘 2026-03-29 -> quandzvl12AnTuTu 11316736
📘 2025-10-08 (MinxK)AnTuTu 11231817
📘 2025-10-04 (zayedbinnahyan)AnTuTu 11218341
Add View all (5)
Realme 6
DateBenchmarkResult
📘 2026-06-10 (Edward)AnTuTu 11516976
📘 2026-05-08 (dizz_tech)AnTuTu 11500607
📘 2026-03-29 (yusuf)AnTuTu 11516826
📘 2026-03-27 (lipp)AnTuTu 11494887
📘 2026-03-21 (dizz_tech)AnTuTu 11404612
Add View all (9)

Memory

RAM
RAM size 2 GB 4 GB
Memory type LPDDR4X LPDDR4X
Memory clock 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage size 32 GB 64 GB
Storage type eMMC 5.1 UFS 2.1
Memory card MicroSD MicroSD
Memory card max size Up to 512 GB Up to 256 GB

Software

Operating system Android 10 (Can be upgraded to Android 12) Android 10.0 (Can be upgraded to Android 11.0)
ROM One UI 4.1 Realme UI 2
OS size 12 GB 13 GB
OS updates 2 years -
Security updates 4 years -

Battery

Capacity 5000 mAh 4300 mAh
Max charge power 15 W 30 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 (100% in 55 min)
Full charging time 2:10 hr 0:55 hr
Battery life tests
Web browsing 09:45 hr 09:19 hr
Watching video 14:13 hr 12:50 hr
Gaming 05:34 hr 05:20 hr
Standby 128 hr 127 hr
General battery life
Galaxy A21s +4%
25:00 hr
Realme 6
23:58 hr
Add your battery life

Main camera

Matrix 48 megapixels 64 megapixels
Image resolution 8000 x 6000 9248 x 6920
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K video recording No No
4K video recording No Up to 30FPS
1080p video recording Up to 30FPS Up to 60FPS
Slow motion No 240 FPS (720p)
Angle of widest lens 123° 119°
Lenses 1) Standard: 48 MP
2) Ultrawide: 8 MP
3) Macro: 2 MP
4) Depth: 2 MP
1) Standard: 64 MP
2) Ultrawide: 8 MP
3) Macro: 2 MP
4) Monochrome: 2 MP
Camera features - Bokeh mode - Bokeh mode
- Pro mode
Standard lens
Image resolution 48 MP 64 MP
Aperture f/2.0 f/1.8
Focal length 26 mm 26 mm
Sensor Samsung S5KGM2 Samsung Bright S5KGW1
Sensor size 1/2.0" (≈ 0.5 inch) 1/1.72" (≈ 0.58 inch)
Pixel size 0.8 micron 0.8 micron
Autofocus Phase autofocus Phase autofocus
Stabilization Digital Digital
Ultra-wide lens
Image resolution 8 MP 8 MP
Aperture f/2.2 f/2.3
Focal length - 13 mm
Sensor size 1/4.0" (≈ 0.25 inch) 1/4.0" (≈ 0.25 inch)
Pixel size 1.12 micron 1.12 micron
Stabilization Digital Digital
Macro lens
Image resolution 2 MP 2 MP
Aperture f/2.4 f/2.4
Focal length - 22 mm
Sensor size - 1/5.0" (≈ 0.2 inch)
Pixel size - 1.75 micron
Stabilization Digital Digital

Selfie camera

Megapixels 13 megapixels 16 megapixels
Image resolution 4128 x 3096 4920 x 3264
Aperture f/2.2 f/2.0
Focal length - 26 mm
Sensor CMOS Samsung S5K3P9
Sensor size 1/3.1" (≈ 0.32 inch) 1/3.1" (≈ 0.32 inch)
Pixel size 1.12 micron 1 micron
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 FPS 1080p (Full HD) at 30 FPS
Depth sensor (TOF 3D) No No

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 USB Type-C
USB version 2 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* 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* No No
Hybrid slot No No
LTE Cat* 13 6
5G support No -

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio Yes Yes
Dolby Atmos Yes No
Speakers test
Max loudness
Galaxy A21s
79.5 dB
Realme 6 +10%
87.4 dB

Other

Category Budget Mid-range
Announced May 2020 March 2020
Release date June 2020 March 2020
Launch price (MSRP) $200 $180
Successor - Samsung Galaxy A24 4G -
SAR (head) 0.23 W/kg 0.71 W/kg
SAR (body) 1.38 W/kg 0.57 W/kg
Sensors - Hall-effect sensor
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint		 - 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

After analyzing all the data, we think that the Realme 6 is definitely a better buy.

Cast your vote

So, which phone would you choose?
8 (22.2%)
28 (77.8%)
Total votes: 36

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