Compare phones
| Global Score | |
| 72.4 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android | Android 11, 10 |
| 2022-01-10 | 2020-03-23 |
| 6.46 x 2.99 x 0.36 inches | 6.26 x 2.96 x 0.35 inches |
| -- | 6.63 ounces |
| Black, Blue and Red | Midnight blue and Raven black |
| Plastic and Plastic | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| 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 | |
| -- | Exynos 9611 chipset |
| 64-bit (Octa-Core 1600 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| Yes GPU | Mali-G72 MP3 GPU |
| 8.73 | 9.27 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 5.8 | 11.74 |
| Camera | |
| 48.00 MP + 5.00 MP | 48.00 MP + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| -- | 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 |
| 9.24 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.4 | 6.7 |
| Battery Life | |
| 5000mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 7.52 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.0 |
| GPS | GPS |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
Samsung Galaxy M21 is much better than the Galaxy A03, with a global score of 84.1 against 72.4. The Samsung Galaxy M21 comes with Android 11 operating system, and Galaxy A03 counts with Android operating system. Galaxy M21 counts with a bit better processing power than Samsung Galaxy A03, and although they both have 8 processing cores, the Galaxy M21 also has a larger amount of RAM.
Samsung Galaxy M21 counts with a sharper display than Galaxy A03, because although it has a little bit smaller display, it also counts with a lot better 1080 x 2340 resolution and a better screen density. The Samsung Galaxy M21 captures much clearer pictures and videos than Galaxy A03, although it has a smaller aperture which is not recommended for taking images and/or video in poorly lited environments, they both have a back-facing camera with a 48 MP resolution.
Galaxy M21 counts with much more storage to store more games and applications than Galaxy A03, because it has a SD memory card expansion slot that holds up to 512 GB and 32 GB more internal storage. The Galaxy M21 features greater battery lifetime than Samsung Galaxy A03, because it has 6000mAh of battery capacity against 5000mAh.
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