Compare phones
| Global Score | |
| 75.3 | 91.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 8.0 Oreo, 7.1 Nougat | Android 11 |
| -- | 2021-01-29 |
| 5.97 x 2.95 x 0.31 inches | 5.97 x 2.80 x 0.31 inches |
| 6.00 ounces | 6.03 ounces |
| Black, Gold and Rose gold | Gray, Phantom pink, Violet and White |
| Metal | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 5.5 inches | 6.2 inches |
| 1920 x 1080 pixels (Full HD) | 2400 x 1080 pixels |
| IPS LCD | Dynamic AMOLED |
| 401 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.9 | 9.2 |
| Performance | |
| Samsung Exynos 7 Octa 7870 chipset | Qualcomm Snapdragon 888 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 3 GB RAM | 8 GB RAM |
| Mali-T830 MP1 GPU | Adreno 660 GPU |
| 8.73 | 9.63 |
| Storage | |
| 32 GB internal memory | 128 GB internal memory |
| microSDXC (up to 256 GB) external memory slot | No SD card slot |
| 8.88 | 10.1 |
| Camera | |
| 13.00 MP + 13.00 MP | 12.00 MP + 10.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 27.00mm focal length | 26.00mm focal length |
| 0.33 inches (1/3.06") sensor | 0.57 inches (1/1.76") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (24 fps) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 9.13 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.1 | 10.7 |
| Battery Life | |
| 3300mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.28 | 5.92 |
| Other Features | |
| Bluetooth 4.1 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Samsung Galaxy S21 is much better than the Galaxy J7 Prime 2, having a 91.8 score against 75.3. Samsung Galaxy S21's design has the same thickness than Galaxy J7 Prime 2, but it's just a little bit heavier. These devices use Android OS (operating system), but the Samsung Galaxy S21 has an older 11 version while Galaxy J7 Prime 2 has Android 9.0 Pie version.
The Galaxy S21 features a quite superior performance than Samsung Galaxy J7 Prime 2, and although they both have the same number of cores, the Galaxy S21 also has a larger amount of RAM. Samsung Galaxy S21 has a brighter screen than Galaxy J7 Prime 2, because it has a quite better resolution of 1080 x 2400px, a quite bigger display and a little bit greater pixel count per inch in the screen.
Samsung Galaxy S21 features a bigger memory for games and applications than Galaxy J7 Prime 2, because although it has no SD extension slot, it also counts with more internal storage. Samsung Galaxy S21 features a better camera than Galaxy J7 Prime 2, because although it has a back camera with less MP resolution, it also counts with a lot larger sensor shooting lot better quality pictures, a much better 7680x4320 video resolution and a bigger aperture to take better images in low light environments.
The Samsung Galaxy S21 has improved battery life than Galaxy J7 Prime 2, because it has a 4000mAh battery capacity.
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