Compare phones
| Global Score | |
| 76.9 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 7.1 Nougat | Android 11, 10 |
| 2018-01-09 | 2020-03-23 |
| 5.97 x 2.95 x 0.31 inches | 6.26 x 2.96 x 0.35 inches |
| 6.00 ounces | 6.63 ounces |
| 16 777 216 | Midnight blue and Raven black |
| Metal | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 5.5 inches | 6.4 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| TFT | Super AMOLED |
| 401 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.9 | 8.4 |
| Performance | |
| Samsung Exynos 7 Octa 7870 chipset | Exynos 9611 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-T830 MP1 GPU | Mali-G72 MP3 GPU |
| 8.82 | 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 | |
| 13.00 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 |
| 0.33 inches (1/3.06") 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 (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 3300mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.28 | 7.52 |
| Other Features | |
| Bluetooth 4.1 | 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
The Galaxy M21 has an overall score of 84.1, which is a little bit better than the Galaxy On7 Prime's general score of 76.9. These phones have Android operating system, but Galaxy M21 has the older 11 version while Galaxy On7 Prime has Android 9.0 Pie version. Even though Galaxy M21 is way newer than the Galaxy On7 Prime, it is somewhat thicker and a bit heavier.
The Samsung Galaxy M21 features a little better processing power than Samsung Galaxy On7 Prime. Both of them have the same number of cores and the same RAM amount. Galaxy M21 features a bit more vivid screen than Galaxy On7 Prime, because it has a quite better resolution of 1080 x 2340 pixels, a little bit greater pixel density and a larger display.
The Galaxy M21 counts with a little bit more storage for applications and games than Galaxy On7 Prime, and although they both have the same internal storage capacity, the Galaxy M21 also has a slot for an external memory card that admits up to 512 GB. The Galaxy M21 features a much better battery lifetime than Galaxy On7 Prime, because it has an 82 percent more battery capacity.
Galaxy M21 counts with a lot better camera than Galaxy On7 Prime, because although it has a smaller aperture which is worse for capturing photos in poorly lited environments, it also counts with a way larger back-facing camera sensor which provides a lot better photo and video quality, a way better (4K) video quality and a back facing camera with lot more mega-pixels.
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