Compare phones
| Global Score | |
| 75.3 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 8.0 Oreo, 7.1 Nougat | Android 11, 10 |
| -- | 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 |
| Black, Gold and Rose gold | Midnight blue and Raven black |
| Metal | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| Display / Screen | |
| 5.5 inches | 6.4 inches |
| 1920 x 1080 pixels (Full HD) | 2340 x 1080 pixels |
| IPS LCD | 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 |
| 3 GB RAM | 4 GB RAM |
| Mali-T830 MP1 GPU | Mali-G72 MP3 GPU |
| 8.73 | 9.27 |
| Storage | |
| 32 GB internal memory | 64 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.88 | 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 and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
The Galaxy M21 has a global score of 84.1, which is much better than Samsung Galaxy J7 Prime 2's 75.3 general score. Despite being the best in this comparison review, Galaxy M21 is a a bit heavier and somewhat thicker device than Samsung Galaxy J7 Prime 2. Both of these phones have Android OS, but the Galaxy M21 has 11 version and Samsung Galaxy J7 Prime 2 has Android 9.0 Pie.
The Galaxy M21 counts with a bit more vivid screen than Galaxy J7 Prime 2, because it has a bit higher resolution of 1080 x 2340 pixels, a bit more pixels per inch of screen and a larger screen. The Galaxy M21 counts with a little better performance than Galaxy J7 Prime 2, and although they both have a Octa-Core processor, the Galaxy M21 also has a higher amount of RAM.
Galaxy M21 has much more memory capacity to store more games and applications than Galaxy J7 Prime 2, because it has 64 GB internal memory and a slot for an SD memory card that allows a maximum of 512 GB. Samsung Galaxy M21 captures way better videos and photos than Galaxy J7 Prime 2, because although it has a smaller aperture which is not so good for shooting photos or videos in low light situations, it also counts with a much higher 3840x2160 (4K) video definition, a way larger camera sensor shooting much higher quality videos and photographs and a camera in the back with a much better resolution.
Samsung Galaxy M21 counts with a much better battery life than Galaxy J7 Prime 2, because it has 6000mAh of battery capacity instead of 3300mAh.
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