Compare phones
| Global Score | |
| 74.2 | 77.7 |
| Basic Information | |
| Asus | Samsung |
| Android 15 | Android 10 |
| -- | 2020-06-19 |
| -- | 6.44 x 2.96 x 0.35 inches |
| 8.01 ounces | 6.77 ounces |
| -- | Black, Blue, Red and White |
| Scratch-Resistant Glass | -- |
| $ 1199.00 | -- |
| Display / Screen | |
| 6.8 inches | 6.5 inches |
| -- | 1600 x 720 pixels |
| OLED | TFT |
| -- | 270 pixels per inch |
| 2500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 4.8 | 7.2 |
| Performance | |
| Snapdragon 8 Elite SM8750-AB (3 nm) chipset | Samsung Exynos 850 chipset |
| processor | Arm Cortex-A55, 64-bit (Octa-Core 2000 MHz) processor |
| 16 GB RAM | 3 GB RAM |
| Adreno 830 GPU | Mali-G76 GPU |
| 6.3 | 9.09 |
| 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 | 48.00 MP + 13.00 MP |
| -- | f/2.00 aperture |
| -- | 26.00mm focal length |
| 0.64 inches (1/1.56") sensor | 0.5 inches (1/2") 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 | 10.78 |
| 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, Dual SIM |
| 7.6 | 6.7 |
| Battery Life | |
| 5800mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 7.44 | 6.8 |
| 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, Gyroscope and Proximity Sensor |
Comparison review
Samsung Galaxy A21s is slightly better than Asus ROG Phone 9 Pro, with a score of 77.7 against 74.2. Both of these devices come with Android operating system, but the Samsung Galaxy A21s has the older 10 version and Asus ROG Phone 9 Pro has Android 15 version. Galaxy A21s features a way better screen than Asus ROG Phone 9 Pro, although it has a quite smaller screen.
Galaxy A21s has a way better performance 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 has a superior memory to install applications and games or saving photos and videos than Galaxy A21s, because although it has no SD memory card expansion slot, it also counts with 512 GB internal storage.
Asus ROG Phone 9 Pro has a slightly better camera than Galaxy A21s, because it has a better resolution back facing camera, a much better (4K) video quality and a much larger sensor providing a much better image quality. Asus ROG Phone 9 Pro has a little better battery duration than Samsung Galaxy A21s, because it has a 16 percent greater battery capacity.
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