Samsung Galaxy M21 vs Samsung Galaxy A40 compare

The best smartphone comparison tool: compare Samsung Galaxy M21 vs Samsung Galaxy A40 and choose the best model for you

Compare Samsung Galaxy M21 and Samsung Galaxy A40

Comparison models can be changed by first selecting Brand from the drop-down menu and then Model from the next drop-down menu. Or by directly entering the name of the model in the find model field.

Smartphone 1

Samsung Galaxy M21

Samsung Galaxy M21

Smartphone 2

Samsung Galaxy A40

Samsung Galaxy A40

Smartphone 3

Samsung Galaxy M21 vs Samsung Galaxy A40

What is the difference between the Samsung Galaxy M21 and Samsung Galaxy A40? Which one is better? The answers to these questions and many more can be found here in this detailed comparison of the two phones. Discover the differences in specs between these two desirable devices, from screen size to battery life, in the table below. We have all the information you need to choose the best phone for you.


Common specs

Brand and model Samsung Galaxy M21 Samsung Galaxy A40
Rating (+1) (+0)
Release date 2020, March 18 2019, March
Dimensions (HxWxD) 159 x 75.1 x 8.9 mm | 6.26 x 6.26 x 2.96 in 144.4 x 69.2 x 7.9 mm | 5.69 x 5.69 x 2.72 in
Weight 188 g | 6.63 oz 140 g | 4.94 oz
Body Build Glass front (Gorilla Glass 3), plastic back, plastic frame Front glass, plastic body
Colors Midnight Blue, Raven Black Black, White, Blue, Coral
Battery 6000 mAh,  Non-removable Li-Po 3100 mAh,  Non-removable Li-Po
Battery life Talking time - Up to 9 (3G)
Music play - Up to 62 h
Approximate price 160 EUR 220 EUR


Technology Super AMOLED Super AMOLED
Touchscreen capacitive touchscreen capacitive touchscreen
Display colors 16M 16M
Screen size 6.4" inc 5.9" inc
Screen area 100.5 cm2 85.5 cm2
Screen format 19.5:9 (height:width) 19.5:9 (height:width)
Screen to body ratio 84.2% 85.5%
Screen resolution 1080 x 2340 px 1080 x 2340 px
Screen PPI /points per inch/ 403 PPI 437 PPI
Screen protection Corning Gorilla Glass 3 Corning Gorilla Glass 3
Other specs - 420 nits max brightness

Camera and Video

Rear camera, main 48 MP, Triple 16 MP, Dual
Camera specs -48 MP, f/2.0, 26mm (wide), 1/2.0'', 0.8µm, PDAF
-8 MP, f/2.2, 12mm (ultrawide), 1/4.0'', 1.12µm
-5 MP, f/2.2, (depth)
-16 MP, f/1.7, 26mm (wide), PDAF
-5 MP, f/2.2, 13mm (ultrawide)
Functions LED flash, panorama, HDR LED flash, panorama, HDR
Video 2160p@30fps, 1080p@30fps, gyro-EIS 1080p@30fps
Front camera, selfie 20 MP, Single 25 MP, Single
Specifications 20 MP, f/2.0, 26mm (wide) 25 MP, f/2.0, 25mm (wide)
Functions HDR
Video 1080p@30fps 1080p@30fps


Operating system - OS Android 10.0; One UI 2 Android 9.0 (Pie)
Chipset - Exynos 9611 (10nm) - Exynos 7904 Octa (14 nm)
Processor CPU - Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) - Octa-core (2x1.77 GHz Cortex-A73 & 6x1.59 GHz Cortex-A53)
Graphics processor GPU Mali-G72 MP3 Mali-G71 MP2
External memory microSDXC (dedicated slot) microSD, up to 1 TB (dedicated slot)
Internal memory 64GB 4GB RAM, 128GB 6GB RAM 64 GB, 4 GB RAM
Antutu 8 score 182451 127724
Antutu 7 score 109789
GeekBench 5 Single Core 327 263
GeekBench 5 Multi-Core 1210 960

Communication and Connectivity

SIM card Dual SIM (Nano-SIM, dual stand-by) Single SIM (Nano-SIM)Dual SIM (Nano-SIM, dual stand-by)
Show all network frequencies:
Speed HSPA, LTE-A HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat12 600/150 Mbps
GPRS Yes Yes
Edge Yes Yes
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
USB 2.0, Type-C 1.0 reversible connector 3.1, Type-C 1.0 reversible connector
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE
Harmful irradiation SAR - 0.47 W/kg (head)    
SAR EU - 0.49 W/kg (head) 1.34 W/kg (body)

Music and Audio

Radio FM radio, RDS, recording FM radio
Headphone jack Yes Yes
Others - Active noise cancellation with dedicated mic

Other features

Sensors - Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass - Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Other extras
- Fast charging 15W

- ANT+
- Fast battery charging 15W
- Versions: SM-A405F/DS, SM-A405FN/DS (Global), SM-A405FM/DS

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