Compare phones
| Global Score | |
| 74.2 | 76.1 |
| Basic Information | |
| Asus | Samsung |
| Android 15 | Android 10 |
| -- | 2020-06-29 |
| -- | 6.61 x 3.02 x 0.32 inches |
| 8.01 ounces | 6.81 ounces |
| -- | Black |
| -- | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| $ 1199.00 | $ 194.00 |
| Display / Screen | |
| 6.8 inches | 6.5 inches |
| -- | 1600 x 720 pixels |
| OLED | IPS LCD |
| -- | 270 pixels per inch |
| 2500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 4.8 | 7.3 |
| Performance | |
| Snapdragon 8 Elite SM8750-AB (3 nm) chipset | Mediatek Helio P35 chipset |
| processor | Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor |
| 16 GB RAM | 3 GB RAM |
| Adreno 830 GPU | PowerVR GE8320 GPU |
| 6.3 | 9.27 |
| Storage | |
| 512 GB internal memory | 32 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 17.6 | 9.84 |
| Camera | |
| 50.00 MP + 32.00 MP | 16.00 MP + 13.00 MP |
| -- | f/1.80 aperture |
| 0.64 inches (1/1.56") sensor | 0.33 inches (1/3.06") sensor |
| 3840 x 2160 (60 fps) (4K) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | -- |
| 11.22 | 9.35 |
| Networks | |
| -- | Wi-Fi |
| -- | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM |
| 7.6 | 6.7 |
| Battery Life | |
| 5800mAh Battery | 4000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 7.44 | 5.92 |
| Other Features | |
| Bluetooth 5.3 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Galaxy A21 is a bit better than Asus ROG Phone 9 Pro, getting a general score of 76.1 against 74.2. These phones include Android OS (operating system), but the Galaxy A21 has the older 10 version while Asus ROG Phone 9 Pro has Android 15 version. The Galaxy A21 has a way better looking display than Asus ROG Phone 9 Pro, although it has a little bit smaller screen.
The Galaxy A21 has a much better performing processing unit than Asus ROG Phone 9 Pro, although it has a lower amount of RAM, they both have the same number of cores. Asus ROG Phone 9 Pro features much more storage capacity to store more apps and games than Galaxy A21, because although it has no slot for an SD memory card, it also counts with 480 GB more internal memory.
The Asus ROG Phone 9 Pro shoots much clearer photos and videos than Samsung Galaxy A21, because it has a back-facing camera with lot more mega-pixels, a much bigger sensor capturing more light and vivid colors and a way higher 3840x2160 (4K) video quality. The Asus ROG Phone 9 Pro has a much better battery performance than Samsung Galaxy A21, because it has a 5800mAh battery size.
Samsung Galaxy A21 not only is the best phones in this comparison, but it's also by far the cheapest one.
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