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Samsung Galaxy M40 vs Galaxy M21

Here we compared two mid-range smartphones: the 6.3-inch Samsung Galaxy M40 (with Qualcomm Snapdragon 675) that was released on June 11, 2019, against the Samsung Galaxy M21, which is powered by Exynos 7 Octa 9611 and came out 9 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 M40
  • 18% better performance in AnTuTu Benchmark (230K versus 195K)
  • 39% faster in single-core GeekBench 5 test: 478 and 345 points
  • Weighs 20 grams less
Reasons to consider the Samsung Galaxy M21
  • Comes with 2500 mAh larger battery capacity: 6000 vs 3500 mAh
  • Super AMOLED display (versus competitor's PLS TFT)
  • Faster storage type - UFS 2.1 versus eMMC 5.1
  • Supports Dolby Atmos sound technology
  • The phone is 9-months newer
  • Includes a 3.5 mm headphone audio jack port

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 Super AMOLED
Size 6.3 inches 6.4 inches
Resolution 1080 x 2340 pixels 1080 x 2340 pixels
Aspect ratio 19.5:9 19.5:9
PPI 409 ppi 403 ppi
Refresh rate 60 Hz 60 Hz
HDR support No No
Screen protection Tempered glass Corning Gorilla Glass 3
Screen-to-body ratio 84.9% 84.2%
Display features - - Always-On Display
Display tests
RGB color space - 141.3%
PWM - 215 Hz
Response time - 9 ms
Contrast - ∞ Infinity
Max. Brightness
604 nits
Sources: NotebookCheck [1]

Design and build

Height 155.3 mm (6.11 inches) 159 mm (6.26 inches)
Width 73.9 mm (2.91 inches) 75.1 mm (2.96 inches)
Thickness 7.9 mm (0.31 inches) 8.9 mm (0.35 inches)
Weight 168 gramm (5.93 oz) 188 gramm (6.63 oz)
Waterproof No No
Rear material Plastic Plastic
Frame material Plastic Plastic
Colors Blue, Orange Black, Blue, Green
Fingerprint scanner Yes, rear Yes, rear
Screen-to-body ratio
84.9%
84.2%

Performance

Tests of Samsung Galaxy M40 and Samsung Galaxy M21 in the benchmarks
SoC
Chipset Qualcomm Snapdragon 675 Samsung Exynos 7 Octa 9611
Max. clock 2000 MHz 2300 MHz
CPU cores 8 (2 + 6) 8 (4 + 4)
Architecture - 6 cores at 1.7 GHz: Kryo 460 Silver (Cortex-A55)
- 2 cores at 2 GHz: Kryo 460 Gold (Cortex-A76)
- 4 cores at 1.7 GHz: Cortex-A53
- 4 cores at 2.3 GHz: Cortex-A73
Lithography process 11 nanometers 10 nanometers
Graphics Adreno 612 Mali-G72 MP3
GPU clock 700-750 MHz 850 MHz
FLOPS ~328.2 GFLOPS ~259 GFLOPS
Memory
RAM size 4 GB 4 GB
Memory type LPDDR4X LPDDR4X
Memory clock 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage size 64 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 512 GB

Benchmarks

Geekbench 5 (Single-Core)
Galaxy M40 +39%
478
Geekbench 5 (Multi-Core)
Galaxy M21 +34%
1326
AnTuTu Benchmark 9
Galaxy M40 +18%
230720
195080

Software

Operating system Android 9.0 (Can be upgraded to Android 11) Android 10.0 (Can be upgraded to Android 11.0)
ROM One UI 3.1 One UI 3.1 Core
OS size - 14.5 GB

Battery

Specifications
Capacity 3500 mAh 6000 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, Samsung Adaptive Fast Charge (50% in 30 min) Yes, Samsung Adaptive Fast Charge (25% in 30 min)
Full charging time 1:30 hr 2:35 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 32 megapixels 48 megapixels
Image resolution 6500 x 4920 8000 x 6000
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K video recording No No
4K video recording Up to 30FPS Up to 30FPS
1080p video recording Up to 240FPS Up to 30FPS
Slow motion 240 FPS (1080p) 240 FPS (720p)
Angle of widest lens 123° 123°
Lenses 3 (32 MP + 8 MP + 5 MP) 3 (48 MP + 8 MP + 5 MP)
Wide (main) lens - 32 MP
- Aperture: f/1.7
- Pixel size: 0.8 micron
- Phase autofocus
- 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
Ultra-wide lens - 8 MP
- Aperture: f/2.2
- Focal length: 12 mm
- Pixel size: 1.12 micron
- Phase autofocus
- 8 MP
- Aperture: f/2.2
- Focal length: 12 mm
- Pixel size: 1.12 micron
- Sensor: 1/4.0" (CMOS)
Depth lens - 5 MP
- Aperture: f/2.2
- 5 MP
- Aperture: f/2.2
- Focal length: 25 mm
- Pixel size: 1.12 micron
- Sensor: 1/5.0" (CMOS)
Camera features - Bokeh mode
- Pro mode
- Bokeh mode
- Pro mode
Selfie camera
Megapixels 16 megapixels 20 megapixels
Image resolution 4608 x 3456 5184 x 3888
Aperture f/2.0 f/2.0
Focal length - 26 mm
Sensor type BSI CMOS CMOS
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 a/b/g/n/ac)
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 Yes No
LTE Cat* 6 12
5G support No No

Sound

Speakers Mono Mono
Headphone audio jack No Yes
FM radio Yes Yes
Dolby Atmos No Yes
Speakers test
Max. loudness
83.8 dB

Other

Category Mid-range Mid-range
Announced June 2019 March 2020
Release date June 2019 March 2020
Launch price ~ 237 USD ~ 200 USD
SAR (head) 0.27 W/kg 0.492 W/kg
SAR (body) 1.17 W/kg 1.13 W/kg
Sensors - 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 Samsung Galaxy M21 is definitely a better buy.

Cast your vote

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Total votes: 4

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