Compare phones
| Global Score | |
| 74.5 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 10 | Android 11, 10 |
| 2021-01-04 | 2020-03-23 |
| 6.46 x 2.99 x 0.36 inches | 6.26 x 2.96 x 0.35 inches |
| 6.91 ounces | 6.63 ounces |
| Black, Blue and White | Midnight blue and Raven black |
| Plastic and Plastic | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| $ 170.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 1600 x 720 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 270 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.2 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 450 SDM450 chipset | Exynos 9611 chipset |
| Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| Adreno 506 GPU | Mali-G72 MP3 GPU |
| 8.91 | 9.27 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 1 TB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.12 | 11.74 |
| Camera | |
| 13.00 MP + 5.00 MP | 48.00 MP + 20.00 MP |
| f/2.20 aperture | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 8.8 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.6 | 6.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 7.52 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | Fingerprint ID Scanner |
| Accelerometer, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
Galaxy M21 is much better than Samsung Galaxy A02s, having a global score of 84.1 against 74.5. The Galaxy M21 construction is just a bit lighter and just a little thinner than Samsung Galaxy A02s, although it was released only 10 months before. Both of these devices have the same Android 11 OS (operating system).
The Galaxy M21 has just a little better hardware performance than Galaxy A02s, and although they both have a Octa-Core processor, the Galaxy M21 also has 1 GB more RAM. Galaxy M21 features a sharper screen than Samsung Galaxy A02s, because although it has a little smaller screen, it also counts with a way better 1080 x 2340 resolution and a better pixels amount per inch in the display.
The Galaxy M21 has a much better camera than Samsung Galaxy A02s, because it has a way more mega pixels back camera, a larger diafragm aperture to take better photos and video in low light environments and a lot higher 3840x2160 (4K) video definition. Galaxy M21 features a bit more storage capacity for apps and games than Samsung Galaxy A02s, because although it has a slot for external memory cards that admits 512 GB smaller, it also counts with more internal storage.
The Galaxy M21 counts with improved battery duration than Samsung Galaxy A02s, because it has 6000mAh of battery capacity.
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