Compare phones
| Global Score | |
| 82.4 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 8.1 Oreo | Android 11, 10 |
| 2019-03-07 | 2020-03-23 |
| 6.26 x 2.96 x 0.33 inches | 6.26 x 2.96 x 0.35 inches |
| 6.14 ounces | 6.63 ounces |
| Black and Blue | Midnight blue and Raven black |
| Plastic | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2280 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 394 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8 | 8.4 |
| Performance | |
| Samsung Exynos 7 Octa 7904 chipset | Exynos 9611 chipset |
| ARM Cortex-A73 and ARM 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 |
| 6 GB RAM | 4 GB RAM |
| Mali-G71 MP2 GPU | Mali-G72 MP3 GPU |
| 9 | 9.27 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 14.14 | 11.74 |
| Camera | |
| 13.00 MP + 16.00 MP | 48.00 MP + 20.00 MP |
| f/1.90 aperture | f/2.00 aperture |
| 27.00mm focal length | 26.00mm focal length |
| 0.32 inches (1/3.1") sensor | 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 |
| 9.13 | 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, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 5000mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 6.8 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.0 |
| GPS | GPS |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy M21 is just a bit better than the Galaxy M30, getting an 84.1 score against 82.4. These phones have Android OS, but the Galaxy M21 has 11 version and Galaxy M30 has Android 9.0 Pie. Galaxy M21's construction is newer than Galaxy M30's, but it is a little thicker and a little bit heavier.
The Galaxy M21 counts with a little better performance than Galaxy M30, although it has 2 GB lesser RAM memory, they both have the same number of cores. Galaxy M21 features a little sharper screen than Galaxy M30, and although they both have a screen with the same size, the Galaxy M21 also has a bit higher 1080 x 2340px resolution and a just a bit greater pixel density.
The Galaxy M30 features much more storage to store more games and applications than Galaxy M21, and although they both have a SD memory slot that allows up to 512 GB, the Galaxy M30 also has more internal memory. Samsung Galaxy M21 features greater battery lifetime than Samsung Galaxy M30, because it has a 6000mAh battery size.
The Samsung Galaxy M21 captures greater videos and photos than Samsung Galaxy M30, because although it has a tinier aperture which is not good for taking images and/or video in low-light situations, it also counts with a back-facing camera with way more mega-pixels, a lot higher (4K) video quality and a lot bigger sensor taking much better quality videos and photographs.
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