Compare phones
| Global Score | |
| 75.3 | 76.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 9.0 Pie, 8.0 Oreo, 7.1 Nougat | Android 10 |
| -- | 2020-06-29 |
| 5.97 x 2.95 x 0.31 inches | 6.61 x 3.02 x 0.32 inches |
| 6.00 ounces | 6.81 ounces |
| Black, Gold and Rose gold | Black |
| Metal | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| -- | $ 194.00 |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 1600 x 720 pixels |
| IPS LCD | IPS LCD |
| 401 pixels per inch | 270 pixels per inch |
| No touch screen | No touch screen |
| 7.9 | 7.3 |
| Performance | |
| Samsung Exynos 7 Octa 7870 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 |
| 3 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 256 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 8.88 | 9.84 |
| Camera | |
| 13.00 MP + 13.00 MP | 16.00 MP + 13.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 27.00mm 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 (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.1 | 6.7 |
| Battery Life | |
| 3300mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 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, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy A21 is slightly better than the Samsung Galaxy J7 Prime 2, having a 76.1 score against 75.3. Both of these phones work with Android operating system, but the Galaxy A21 has the previous 10 version while Samsung Galaxy J7 Prime 2 has Android 9.0 Pie. The Galaxy A21 construction is heavier and just a bit thicker than the Samsung Galaxy J7 Prime 2.
Galaxy J7 Prime 2 features just a bit better looking screen than Samsung Galaxy A21, because although it has a bit smaller display, it also counts with a better resolution of 1080 x 1920px and a better screen density. The Galaxy A21 has more storage capacity for apps and games than Galaxy J7 Prime 2, and although they both have the same 32 GB internal memory capacity, the Galaxy A21 also has an external memory card slot that admits a maximum of 512 GB.
Galaxy A21 has a little bit better hardware performance than Galaxy J7 Prime 2. Both of them have a 3 GB RAM memory and 8 cores. The Galaxy A21 shoots just a bit better pictures and videos than Galaxy J7 Prime 2, and although they both have a same size back camera sensor, the same video quality and the same 30 frames per second video frame rates, the Galaxy A21 also has a larger diafragm aperture for better low light photography and videos and a back camera with a higher resolution.
The Galaxy A21 counts with longer battery lifetime than Galaxy J7 Prime 2, because it has a 21 percent greater battery capacity.
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