Compare phones
| Global Score | |
| 70.1 | 76.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 6.0 Marshmallow | Android 10 |
| 2016-10-02 | 2020-06-29 |
| 5.97 x 2.99 x 0.31 inches | 6.61 x 3.02 x 0.32 inches |
| 5.96 ounces | 6.81 ounces |
| 16 777 216 | Black |
| Metal | Plastic and Plastic |
| $ 240.00 | $ 194.00 |
| Display / Screen | |
| 5.5 inches | 6.5 inches |
| 1920 x 1080 pixels (Full HD) | 1600 x 720 pixels |
| Super AMOLED | 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 7580 chipset | Mediatek Helio P35 chipset |
| ARM Cortex-A53, 64-bit, 28 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-T720 MP2 GPU | PowerVR GE8320 GPU |
| 8.73 | 9.27 |
| Storage | |
| 16 GB internal memory | 32 GB internal memory |
| microSDXC (up to 128 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 6.72 | 9.84 |
| Camera | |
| 13.00 MP + 5.00 MP | 16.00 MP + 13.00 MP |
| f/1.90 aperture | f/1.80 aperture |
| 28.00mm focal length | -- |
| -- | 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 |
| 8.91 | 9.35 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| -- | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Micro SIM, Dual SIM | Nano SIM |
| 3 | 6.7 |
| Battery Life | |
| 3300mAh Li - Ion Battery | 4000mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| 5.28 | 5.92 |
| Other Features | |
| Bluetooth 4.1 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| -- | Fingerprint ID Scanner |
| Accelerometer, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy A21 is a little bit better than Galaxy On8, with a 76.1 score against 70.1. These phones come with Android operating system, but Galaxy A21 has older 10 version and Galaxy On8 has Android 6.0 Marshmallow. Galaxy A21's design is a lot newer, but somewhat heavier and a little bit thicker than Galaxy On8.
Samsung Galaxy On8 features just a bit better display than Samsung Galaxy A21, because although it has a little smaller display, it also counts with a better display density and a better 1080 x 1920 resolution. Galaxy A21 features a little bit better hardware performance than Samsung Galaxy On8. Both have the same RAM memory amount and the same number of cores.
The Galaxy A21 has just a bit better camera than Galaxy On8, and although they both have the same 30 frames per second video frame rate and the same video definition, the Galaxy A21 also has a camera with a higher resolution and a bigger camera aperture for better low light photos and video. The Samsung Galaxy A21 has a very superior storage capacity for applications, games, photos and videos than Galaxy On8, because it has a SD extension slot that supports a maximum of 512 GB and more internal memory capacity.
The Galaxy A21 has longer battery lifetime than Galaxy On8, because it has a 21% greater battery capacity.
Galaxy A21 is not only the best phones of the ones we compare here, but it's also a bargain compared to the other ones, which makes it a no doubt choice.
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