Compare phones
| Global Score | |
| 72.7 | 76.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 8.0 Oreo | Android 10 |
| 2018-06-29 | 2020-06-29 |
| 6.03 x 3.00 x 0.34 inches | 6.61 x 3.02 x 0.32 inches |
| 6.38 ounces | 6.81 ounces |
| 16 777 216 | Black |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| -- | $ 194.00 |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1280 x 720 pixels (HD) | 1600 x 720 pixels |
| TFT | IPS LCD |
| 267 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 7.1 | 7.3 |
| Performance | |
| Samsung Exynos 7 Octa 7884 chipset | Mediatek Helio P35 chipset |
| ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1600 MHz) processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 2 GB RAM | 3 GB RAM |
| Mali-T830 MP1 GPU | PowerVR GE8320 GPU |
| 8.73 | 9.27 |
| Storage | |
| 32 GB internal memory | 32 GB internal memory |
| microSDXC (up to 400 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 9.44 | 9.84 |
| Camera | |
| 13.00 MP + 13.00 MP | 16.00 MP + 13.00 MP |
| f/1.70 aperture | f/1.80 aperture |
| 28.00mm focal length | -- |
| 0.33 inches (1/3.06") sensor | 0.33 inches (1/3.06") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 9.13 | 9.35 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 6.3 | 6.7 |
| Battery Life | |
| 3300mAh Li - Polymer Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 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, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
Samsung Galaxy A21 has a score of 76.1, which is slightly better than Galaxy J7 Refine's 72.7 general score. The Samsung Galaxy A21 construction is noticeably newer and a bit thinner, but also just a little heavier than Galaxy J7 Refine. Both of these phones use Android OS (operating system), but Samsung Galaxy A21 has 10 version and Galaxy J7 Refine has Android 8.0 Oreo.
The Galaxy A21 counts with a little better performance than Samsung Galaxy J7 Refine, and although they both have the same number of cores, the Galaxy A21 also has a larger amount of RAM memory. Galaxy A21 has a little more vivid display than Galaxy J7 Refine, because it has a just a bit greater pixels density, a little bit higher 720 x 1600 resolution and a larger screen.
The Galaxy A21 has a slightly bigger storage to install applications and games than Galaxy J7 Refine, and although they both have the same internal memory capacity, the Galaxy A21 also has a slot for external memory cards that supports up to 512 GB. The Samsung Galaxy A21 counts with improved battery duration than Galaxy J7 Refine, because it has a 4000mAh battery size.
The Galaxy A21 has a bit better camera than Samsung Galaxy J7 Refine, because although it has a smaller diafragm aperture which is not recommended for low light captures and videos, and they both have the same 30 frames per second video frame rate, the same video definition and a 0.33 inches sensor, the Galaxy A21 also counts with a higher 16 megapixels resolution back camera.
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