Samsung Galaxy M21 vs Galaxy A12

Here we compared two smartphones: the 6.4-inch Samsung Galaxy M21 (with Exynos 7 Octa 9611) that was released on March 17, 2020, against the Samsung Galaxy A12, which is powered by MediaTek Helio P35 and came out 8 months after. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Samsung Galaxy M21
  • 90% better performance in AnTuTu Benchmark (214K versus 112K)
  • 49% higher pixel density (403 vs 270 PPI)
  • Comes with 1000 mAh larger battery capacity: 6000 vs 5000 mAh
  • Compatible with Wi-Fi 5 wireless networks
  • Delivers 30% higher peak brightness (618 against 476 nits)
  • Slow-motion recording at 240FPS
  • Uses a faster type of memory: LPDDR4X 1866 MHz
  • Ability to record video in 4K resolution
  • Super AMOLED display (versus competitor's PLS TFT)
Reasons to consider the Samsung Galaxy A12
  • The phone is 8-months newer
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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 Super AMOLED PLS TFT
Size 6.4 inches 6.5 inches
Resolution 1080 x 2340 pixels 720 x 1600 pixels
Aspect ratio 19.5:9 20:9
PPI 403 ppi 270 ppi
Refresh rate 60 Hz 60 Hz
Adaptive refresh rate No No
Max rated brightness 630 nits 450 nits
HDR support No No
Screen protection Corning Gorilla Glass 3 Tempered glass
Screen-to-body ratio 84.2% 82.1%
Display features - Always-On Display -
Display tests
RGB color space 141.3% 96.3%
PWM 215 Hz 337 Hz
Response time 9 ms 52 ms
Contrast ∞ Infinity 864:1
Peak brightness test (auto)
Galaxy M21 +30%
618 nits
476 nits
Sources: NotebookCheck [3], [4]

Design and build

Height 159 mm (6.26 inches) 164 mm (6.46 inches)
Width 75.1 mm (2.96 inches) 75.8 mm (2.98 inches)
Thickness 8.9 mm (0.35 inches) 8.9 mm (0.35 inches)
Weight 188 g (6.63 oz) 205 g (7.23 oz)
Waterproof No No
Rear material Plastic Plastic
Frame material Plastic Plastic
Colors Black, Blue, Green White, Black, Blue, Red
Fingerprint scanner Yes, rear Yes, in home button
Screen-to-body ratio
84.2%
82.1%

Performance

Tests of Samsung Galaxy M21 and Samsung Galaxy A12 in the benchmarks
SoC
Chipset Samsung Exynos 7 Octa 9611 MediaTek Helio P35
Max clock 2300 MHz 2300 MHz
CPU cores 8 (4 + 4) 8 (4 + 4)
Architecture - 4 cores at 1.7 GHz: Cortex-A53
- 4 cores at 2.3 GHz: Cortex-A73
- 4 cores at 1.8 GHz: Cortex-A53
- 4 cores at 2.3 GHz: Cortex-A53
Lithography process 10 nanometers 12 nanometers
Graphics Mali-G72 MP3 IMG PowerVR GE8320
GPU clock 850 MHz 680 MHz
FLOPS ~259 GFLOPS ~44.8 GFLOPS

Benchmarks

Geekbench 5 (Single-Core)
Galaxy M21 +105%
348
Geekbench 5 (Multi-Core)
Galaxy M21 +30%
1353
1040
AnTuTu Benchmark 9
Galaxy M21 +90%
214210
112982
CPU 61605 35357
GPU 43597 13133
Memory 45704 28597
UX 62702 35628
Total score 214210 112982
3DMark Wild Life Performance
Max surface temperature 44.1 °C 44.1 °C
Stability 73% -
Graphics test 4 FPS -
Graphics score 816 -
Sources: 3DMark [3]

Memory

RAM
RAM size 4, 6 GB 3, 4, 6 GB
Memory type LPDDR4X LPDDR4
Memory clock 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage size 64, 128 GB 32, 64, 128 GB
Storage type UFS 2.1 eMMC 5.1
Memory card MicroSD MicroSD
Memory card max size Up to 512 GB Up to 1024 GB

Software

Operating system Android 10.0 (Can be upgraded to Android 12.0) Android 10.0 (Can be upgraded to Android 12)
ROM One Ui 4.1 One UI Core 4.1
OS size 14.5 GB 13 GB

Battery

Specifications
Capacity 6000 mAh 5000 mAh
Charge power 15 W 15 W
Battery type Li-Ion Li-Po
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes, Samsung Adaptive Fast Charge (25% in 30 min) Yes (20% in 30 min)
Full charging time 2:35 hr 3:03 hr
Battery life tests
Web browsing - 16:07 hr
Watching video - 12:14 hr
Gaming - 06:09 hr
Standby - 153 hr
General battery life
41:01 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 Up to 30FPS No
1080p video recording Up to 30FPS Up to 30FPS
Slow motion 240 FPS (720p) No
Angle of widest lens 123° 123°
Lenses 3 (48 MP + 8 MP + 5 MP) 4 (48 MP + 5 MP + 2 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", Samsung S5KGM2 (ISOCELL CMOS)
- Phase autofocus
- 48 MP
- Aperture: f/2.0
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2", Samsung S5KGM2 (ISOCELL CMOS)
- Phase autofocus
Ultra-wide lens - 8 MP
- Aperture: f/2.2
- Focal length: 12 mm
- Pixel size: 1.12 micron
- Sensor: 1/4.0" (CMOS)
- 5 MP
- Aperture: f/2.2
Macro lens - - 2 MP
- Aperture: f/2.4
Depth lens - 5 MP
- Aperture: f/2.2
- Focal length: 25 mm
- Pixel size: 1.12 micron
- Sensor: 1/5.0" (CMOS)
- 2 MP
- Aperture: f/2.2
Camera features - Bokeh mode
- Pro mode
- Bokeh mode
- Pro mode
Samples - Photo samples of Samsung Galaxy A12 from DxOMark
Selfie camera
Megapixels 20 megapixels 8 megapixels
Image resolution 5184 x 3888 3264 x 2448
Aperture f/2.0 f/2.0
Focal length 26 mm -
Sensor type CMOS CMOS
Video resolution 1080p (Full HD) at 30 FPS 1080p (Full HD) at 30 FPS

DxOMark camera tests

Photo quality
Video quality
Generic camera score

Connectivity

Wi-Fi standard Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 4 (802.11 b/g/n)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
Bluetooth version 5 5
Bluetooth features PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP 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
- 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* 12 7
5G support No No

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio Yes Yes
Dolby Atmos Yes Yes
Speakers test
Max loudness
83.8 dB
80.9 dB

Other

Category Mid-range Budget
Announced March 2020 November 2020
Release date March 2020 December 2020
SAR (head) 0.492 W/kg 0.67 W/kg
SAR (body) 1.13 W/kg 1.38 W/kg
Sensors - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Proximity sensor
- Accelerometer
- Ambient light sensor
- 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 M21 is definitely a better buy.

Cast your vote

So, which phone would you choose?
100 (79.4%)
26 (20.6%)
Total votes: 126

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