Home Phone comparison Xiaomi Redmi 12 and Samsung Galaxy A21s - Which is better?

Xiaomi Redmi 12 vs Samsung Galaxy A21s

47 out 100
Xiaomi Redmi 12
VS
39 out 100
Samsung Galaxy A21s
Xiaomi Redmi 12
Samsung Galaxy A21s

Compared 2 smartphones : Xiaomi Redmi 12 Manufactured in June, 2023, with display 6.79 with chipsetMediaTek Helio G88, vs Samsung Galaxy A21s, Manufactured in June, 2020 with chipsetSamsung Exynos 850. 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 Xiaomi Redmi 12
  • Larger display: 6.79in
  • Higher pixel density: 396ppi
  • Higher refresh rate: 90Hz
  • Newer Bluetooth version: 5.3 vs 5
  • Infrared port
Reasons to choose Samsung Galaxy A21s
  • Lighter design: 192g vs 198.5g
  • Supports Dolby Atmos

Versions

Available versions and configurations
Memory Options - 2/128 GB
- 4/128 GB
- 6/128 GB
- 8/128 GB
- 8/256 GB		 - 2/32 GB
- 3/32 GB
- 3/64 GB
- 3/128 GB
- 4/32 GB
- 4/64 GB
- 4/128 GB
- 6/64 GB
- 6/128 GB

Review

Key Specs Xiaomi Redmi 12 and Samsung Galaxy A21s
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:
Xiaomi Redmi 12
vs
Samsung Galaxy A21s

Display

Display quality comparison
Type IPS LCD PLS TFT
Size 6.79 in 6.5 in
Resolution 1080x2460 pixels 720x1600 pixels
Aspect ratio 19.5:9 20:9
Pixel density 396 ppi 270 ppi
Refresh rate 90 Hz 60 Hz
Adaptive refresh rate No No
Max brightness 550 nits 540 nits
HDR support No No
Screen-to-body ratio 88 % 82.9 %
Display test
Peak brightness (auto)
Xiaomi Redmi 12
539 nits
Samsung Galaxy A21s
487 nits
sRGB gamut96.3 %88.4 %
PWM (Flicker)n/a500 Hz
Response time26 ms30.4 ms
Contrast898:11500:1
Sources: NotebookCheck [Xiaomi Redmi 12], [Samsung Galaxy A21s]

Design & Build

Design and ergonomics comparison
Height 168.6 mm (6.64 in) 163.6 mm (6.44 in)
Width 76.28 mm (3 in) 75.3 mm (2.96 in)
Thickness 8.17 mm (0.32 in) 8.9 mm (0.35 in)
Weight 198.5 g (7 oz) 192 g (6.77 oz)
Water resistance IP53 No
Back panel Plastic Plastic
Frame Plastic Plastic
Colors - Black
- Silver
- Blue		 - Black
- Blue
- Red
Fingerprint sensor Yes In-Button Yes rear
Screen-to-body ratio
Xiaomi Redmi 12
88 %
Samsung Galaxy A21s
82.9 %

Performance

Testing Xiaomi Redmi 12 and Samsung Galaxy A21s In benchmarks
Processor
Chipset MediaTek Helio G88 Samsung Exynos 850
Max Frequency 2000 MHz 2000 MHz
CPU Cores 8 (2 + 6) 8 (8)
Architecture - 6/1.8 (Cortex-A55)
- 2/2 (Cortex-A75)		 8/2 (Cortex-A55)
Process TSMC Samsung
Transistor Size 12 nm 8 nm
Neural Processor MediaTek APU No
Graphics Mali-G52 MP2 Mali-G52 MP1
GPU Cores 48 24
GPU Frequency 1000 MHz 850 MHz
FLOPS 96 GFLOPS 40.8 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi Redmi 12
434
Samsung Galaxy A21s
484
Geekbench 6 (Multi-Core)
Xiaomi Redmi 12
1223
Samsung Galaxy A21s
1523
Geekbench 6 (Single-Core)434484
Geekbench 6 (Multi-Core)12231523
AnTuTu 10
AnTuTu 10
Xiaomi Redmi 12
266658
Samsung Galaxy A21s
191375
CPU8450868748
GPU3952226807
Memory6968859210
UX7294036610
NanoReview Score266658191375
3DMark Wild Life
3DMark Wild Life
Xiaomi Redmi 12
743
Samsung Galaxy A21s
425
Max Surface Temp.n/a43.2 °C
Stabilityn/a98 %
Graphics Testn/a2 fps
Graphics Scoren/a425
Sources: 3DMark [Xiaomi Redmi 12], [Samsung Galaxy A21s]
PCMark 3.0
PCMark 3.0
Xiaomi Redmi 12
9150
Samsung Galaxy A21s
5429
Writing score86465426
Web score86154708
Video editing68495145
Data manipulation63913808
NanoReview Score91505429

Memory

RAM
RAM Size - 4 GB
- 8 GB		 - 3 GB
- 4 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 1800 MHz 1866 MHz
Channels 2 2
Storage
Storage Capacity- 128 GB
- 256 GB		- 32 GB
- 64 GB
Storage TypeeMMC 5.1eMMC 5.1
Memory CardMicroSDMicroSD

Software

OS Android 13 (Upgradeable to Android 15) Android 10 (Upgradeable to Android 12)
OS Size 18 GB 12 GB
UI Skin HyperOS 2.0 One UI 4.1

Battery

Volume 5000 mAh 5000 mAh
Max Charging Power 18 W 15 W
Battery Type Li-Po Li-Po
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging Yes (29% in 30 min) Yes (50% in 60 min)
Full Charge Time 2:07 h 2:10 h
Battery Life Test
Battery Life
Xiaomi Redmi 12
22:09
Samsung Galaxy A21s
25:00
Web Browsing07:58 h09:45 h
Video Playback12:45 h14:13 h
Games04:59 h05:34 h
Standby Mode118 h128 h

Main camera

Matrix 50 MP 48 MP
Photo resolution 8150x6150 pixels 8000x6000 pixels
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording No No
1080p Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
Slow Motion 120 fps (720p) No
Wide-angle lens 120 ° 123 °
Lenses count Standard: 50 MP
Ultra-wide: 8 MP
Depth: 2 MP		 Standard: 48 MP
Ultra-wide: 8 MP
Macro: 2 MP
Depth: 2 MP
Features - Bokeh effect
- Pro mode		 Bokeh effect
Main lens
Matrix50 MP48 MP
Aperturef/1.8f/2.0
Focal lengthn/a26 mm
SensorSamsung S5KJN1Samsung S5KGM2
Sensor size1/2.761/2.0
Pixel size0.64 μm0.8 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital
Ultra-wide lens
Matrix8 MP8 MP
Aperturef/2.2f/2.2
SensorSony IMX355n/a
Sensor size1/2.81/4.0
Pixel size1.14 μm1.12 μm
StabilizationDigitalDigital

Front camera

Matrix 8 MP 13 MP
Photo resolution 3264x2448 pixels 4128x3096 pixels
Aperture f/2.1 f/2.2
Sensor n/a CMOS
Sensor size n/a 1/3.1
Pixel size n/a 1.12 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 a/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 5.3 5
Bluetooth features LE PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode		 - Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Varies by region Yes
Infrared Port Yes No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotYesNo
2G BandsGSM 2/3/5/8GSM850, GSM900, DCS1800, PCS1900
3G BandsWCDMA 1/5/8B1 (2100), B2 (1900), B5(850), B8 (900)
LTE Bands*LTE (B1/B3/B5/B7/B8/B20/B28/B38/B40/B41)LTE (B1/B2/B3/B5/B7/B8/B20/B28)
LTE category713
5G SupportNoNo

Sound

Speakers Mono Mono
3.5 mm Jack Yes Yes
FM Radio Yes Yes
Dolby Atmos No Yes
Speaker Test
Max Volume
Xiaomi Redmi 12
79.4 dB
Samsung Galaxy A21s
79.5 dB

Other

Class Budget Budget
Announced June, 2023 yr May, 2020 yr
Release Date June, 2023 yr June, 2020 yr
Launch Price ($) 159 200
Sensors - Accelerometer
- Compass
- Fingerprint sensor		 - Hall Sensor
- 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

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