Compare phones
| Global Score | |
| 72.7 | 91.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 8.0 Oreo | Android 11 |
| 2018-06-29 | 2021-01-29 |
| 6.03 x 3.00 x 0.34 inches | 5.97 x 2.80 x 0.31 inches |
| 6.38 ounces | 6.03 ounces |
| 16 777 216 | Gray, Phantom pink, Violet and White |
| -- | Aluminum and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| -- | $ 722.00 |
| Display / Screen | |
| 5.5 inches | 6.2 inches |
| 1280 x 720 pixels (HD) | 2400 x 1080 pixels |
| TFT | Dynamic AMOLED |
| 267 pixels per inch | 424 pixels per inch |
| -- | 1300 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.1 | 9.2 |
| Performance | |
| Samsung Exynos 7 Octa 7884 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 |
| 2 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 400 GB) external memory slot | No SD card slot |
| 9.44 | 10.1 |
| Camera | |
| 13.00 MP + 13.00 MP | 12.00 MP + 10.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 28.00mm 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-A (4G), LTE (4G), HSPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 6.3 | 10.7 |
| Battery Life | |
| 3300mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.28 | 5.92 |
| Other Features | |
| Bluetooth 4.2 | Bluetooth 5.0 |
| GPS | GPS |
| -- | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Samsung Galaxy S21 has a general score of 91.8, which is a lot better than Samsung Galaxy J7 Refine's 72.7 global score. These phones come with Android OS (Operating System), but the Samsung Galaxy S21 has 11 version and Samsung Galaxy J7 Refine has Android 8.0 Oreo. The Samsung Galaxy S21 is a incredibly newer cellphone, and it is also just a bit lighter and a little bit thinner than Samsung Galaxy J7 Refine.
Samsung Galaxy S21 counts with a better CPU than Galaxy J7 Refine, and although they both have the same number of cores, the Samsung Galaxy S21 also has a larger amount of RAM. The Galaxy S21 counts with a much better display than Samsung Galaxy J7 Refine, because it has a lot greater pixel density, a lot better resolution of 1080 x 2400 pixels and a little bit bigger display.
The Galaxy S21 features a little bit better storage to store more games and applications than Samsung Galaxy J7 Refine, because although it has no SD extension slot, it also counts with more internal memory. Galaxy S21 shoots much clearer photographs and videos than Galaxy J7 Refine, because although it has a lesser MP resolution camera and a tinier diafragm aperture, it also counts with a way bigger sensor taking much higher quality photographs and videos and a way better video definition.
The Galaxy S21 has longer battery lifetime than Samsung Galaxy J7 Refine, because it has a 21% bigger battery size.
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