Compare phones
| Global Score | |
| 76.1 | 75.8 |
| Basic Information | |
| Samsung | Samsung |
| Android 10 | -- |
| 2020-06-29 | 2017-01-13 |
| 6.61 x 3.02 x 0.32 inches | 6.17 x 3.06 x 0.31 inches |
| 6.81 ounces | 6.56 ounces |
| Black | Black sky, Blue mist, Gold sand and Peach cloud |
| Plastic and Plastic | Aluminum and Glass (Corning Gorilla Glass 4) |
| -- | Scratch-Resistant Glass |
| $ 194.00 | -- |
| Display / Screen | |
| 6.5 inches | 5.7 inches |
| 1600 x 720 pixels | 1920 x 1080 pixels (Full HD) |
| IPS LCD | Super AMOLED |
| 270 pixels per inch | 386 pixels per inch |
| No touch screen | No touch screen |
| 7.3 | 7.9 |
| Performance | |
| Mediatek Helio P35 chipset | Samsung Exynos 7 Octa 7880 chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1900 MHz) processor |
| 3 GB RAM | 3 GB RAM |
| PowerVR GE8320 GPU | Mali-T830 MP3 GPU |
| 9.27 | 9 |
| Storage | |
| 32 GB internal memory | 32 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 256 GB) external memory slot |
| 9.84 | 8.88 |
| Camera | |
| 16.00 MP + 13.00 MP | 16.00 MP + 16.00 MP |
| f/1.80 aperture | f/1.90 aperture |
| 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 |
| 9.35 | 9.24 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G) and HSPA |
| Nano SIM | Nano SIM, Dual SIM |
| 6.7 | 6.1 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 3600mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 5.6 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 4.2 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Samsung Galaxy A21 is a little bit better than the Galaxy A7 (2017), with a overall score of 76.1 against 75.8. The Samsung Galaxy A21 is a incredibly newer device than Galaxy A7 (2017), although it is just a little heavier and a little bit thicker. Galaxy A7 (2017) has a little more vivid screen than Galaxy A21, because although it has a quite smaller display, it also counts with a better resolution of 1080 x 1920px and more pixels per inch in the display.
Samsung Galaxy A21 counts with a bigger storage capacity for applications, games, photos and videos than Galaxy A7 (2017), and although they both have the same internal storage capacity, the Samsung Galaxy A21 also has a SD memory slot that supports up to 512 GB. Samsung Galaxy A21 counts with a bit superior processing unit than Galaxy A7 (2017). Both of them have 8 processing cores and 3 GB of RAM memory.
Galaxy A21 features a bit longer battery lifetime than Samsung Galaxy A7 (2017), because it has an 11 percent bigger battery capacity. The Samsung Galaxy A21 features a slightly better camera than Samsung Galaxy A7 (2017), and although they both have the same video frame rate, the same (Full HD) video definition and the same resolution back camera, the Samsung Galaxy A21 also has a bigger camera aperture to take better low-light captures and video.
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