Compare phones
| Global Score | |
| 83 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie | Android 11, 10 |
| 2017-09-15 | 2020-03-23 |
| 6.40 x 2.94 x 0.34 inches | 6.26 x 2.96 x 0.35 inches |
| 6.88 ounces | 6.63 ounces |
| Deep Sea blue, Maple gold, Midnight black and Orchid gray | Midnight blue and Raven black |
| Aluminum and Glass (Corning Gorilla Glass 5) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 440.00 | -- |
| Display / Screen | |
| 6.3 inches | 6.4 inches |
| 2960 x 1440 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 522 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.7 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 835 MSM8998 chipset | Exynos 9611 chipset |
| Kryo 280, 64-bit, 10 nm (Octa-Core 2350 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 6 GB RAM | 4 GB RAM |
| Adreno 540 GPU | Mali-G72 MP3 GPU |
| 9.36 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 10.78 | 11.74 |
| Camera | |
| 12.00 MP + 8.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 26.00mm focal length | 26.00mm focal length |
| 0.39 inches (1/2.55") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 9.79 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 3300mAh Li - Ion Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 5.28 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
Galaxy M21 is a little bit better than Galaxy Note8, with a overall score of 84.1 against 83. Both of these devices come with Android OS, but the Galaxy M21 has the previous 11 version while Galaxy Note8 has Android 9.0 Pie version. Even though the Galaxy M21 is a little bit thicker than the Galaxy Note8, it's a little bit lighter and extremely newer.
Samsung Galaxy Note8 counts with a bit better performance than Galaxy M21, and although they both have the same number of cores, the Samsung Galaxy Note8 also has more RAM memory. Samsung Galaxy Note8 features a slightly better looking screen than Galaxy M21, because although it has a bit smaller screen, it also counts with a better 1440 x 2960 pixels resolution and a greater display density.
The Samsung Galaxy M21 has a little bit more storage capacity to install applications and games or saving photos and videos than Samsung Galaxy Note8, and although they both have equal internal storage capacity, the Samsung Galaxy M21 also has an external memory slot that admits a maximum of 512 GB.
The Samsung Galaxy M21 shoots much clearer videos and photos than Galaxy Note8, because although it has a smaller camera aperture which is not recommended for low light captures and video, and they both have the same 3840x2160 (4K) video definition and the same 30 fps video frame rates, the Samsung Galaxy M21 also counts with a much more mega-pixels back facing camera and a way bigger back camera sensor.
Galaxy M21 counts with a really longer battery life than Galaxy Note8, because it has 6000mAh of battery capacity.
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