Compare phones
| Global Score | |
| 72.5 | 76.1 |
| Basic Information | |
| Samsung | Samsung |
| -- | Android 10 |
| 2018-07-13 | 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 |
| Black | Black |
| Plastic | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| $ 230.00 | $ 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 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 |
| 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 (4G), HSPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano 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 4.2 | 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
Galaxy A21 is slightly better than the Samsung Galaxy J7 (2018), with a 76.1 score against 72.5. The Galaxy A21 design is newer and just a little thinner, but also just a little bit heavier than Samsung Galaxy J7 (2018). Galaxy A21 counts with a slightly better display than Galaxy J7 (2018), because it has a bigger display, a little higher display density and a little higher resolution of 720 x 1600px.
Samsung Galaxy A21 counts with a bit more storage to store more apps and games than Samsung Galaxy J7 (2018), and although they both have exactly the same 32 GB internal memory, the Samsung Galaxy A21 also has an external memory card slot that supports up to 512 GB. The Samsung Galaxy A21 counts with a bit better CPU than Samsung Galaxy J7 (2018), and although they both have a Octa-Core CPU, the Samsung Galaxy A21 also has 1 GB more RAM.
The Galaxy A21 features just a bit better camera than Galaxy J7 (2018), because although it has a tinier aperture, and they both have the same video frame rate, the same 1920x1080 video quality and a same size back camera sensor, the Galaxy A21 also counts with a back facing camera with more mega-pixels.
Samsung Galaxy A21 features longer battery life than Galaxy J7 (2018), because it has a 4000mAh battery capacity.
Galaxy A21 is not only the best devices of the ones in this comparison, but it's also very cheap compared to the other devices.
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