| Global Score | |
| 73.7 | 84.1 |
| Basic Information | |
| Apple | Samsung |
| HarmonyOS 2 | Android 11, 10 |
| -- | 2020-03-23 |
| 6.24 x 2.85 x 0.35 inches | 6.26 x 2.96 x 0.35 inches |
| 6.63 ounces | 6.63 ounces |
| Black, Silver and White | Midnight blue and Raven black |
| Aluminum and Glass | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 2376 x 1080 pixels | 2340 x 1080 pixels |
| OLED | Super AMOLED |
| 402 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.5 | 8.4 |
| Performance | |
| Kirin 990E (7 nm) chipset | Exynos 9611 chipset |
| processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 8 GB RAM | 4 GB RAM |
| Mali-G76 MP14 GPU | Mali-G72 MP3 GPU |
| 6.3 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 64.00 MP + 13.00 MP | 48.00 MP + 20.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| 27.00mm focal length | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| -- | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 9.68 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| -- | Nano SIM, Dual SIM |
| 6.6 | 6.7 |
| Battery Life | |
| 4200mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.08 | 7.52 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Galaxy M21 has a global score of 84.1, which is better than the Mate 40E 4G's 73.7 overall score. Galaxy M21 works with Android 11 operating system, and Mate 40E 4G counts with HarmonyOS 2 operating system. The Galaxy M21 design has the same weight and thickness than Mate 40E 4G.
Galaxy M21 has a better display than Apple Mate 40E 4G, because although it has a little smaller screen and a bit lower resolution of 1080 x 2340px, it also counts with a little better pixels quantity per inch of display. Galaxy M21 counts with a greater storage for apps and games than Mate 40E 4G, because although it has only 64 GB internal storage, it also counts with a SD memory card expansion slot that allows a maximum of 512 GB.
The Samsung Galaxy M21 features a much better hardware performance than Mate 40E 4G, although it has 4 GB lesser RAM memory, they both have 8 processing cores. Galaxy M21 counts with a way better battery life than Apple Mate 40E 4G, because it has a 43% larger battery size. The Galaxy M21 captures much better photographs and videos than Mate 40E 4G, although it has a tinier aperture and a lot lower resolution back facing camera.
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