| Global Score | |
| 72.2 | 77.8 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 4.3, 4.2, 4.1, 4.0.4 | Android 11 |
| 2012-06-04 | 2022-03-15 |
| 5.38 x 2.78 x 0.34 inches | 6.01 x 2.75 x 0.32 inches |
| 4.73 ounces | 6.21 ounces |
| Blue, Red and White | Blue, Grey and Purple |
| Polycarbonate | Aluminum and Glass |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 585.00 | -- |
| Display / Screen | |
| 4.8 inches | 6.3 inches |
| 720 x 1280 pixels (HD) | 2400 x 1080 pixels |
| Super AMOLED | AMOLED |
| 306 pixels per inch | 418 pixels per inch |
| -- | 1100 cd/m2 brightness |
| Capacitive, Multi-touch | No touch screen |
| 8.2 | 8.9 |
| Performance | |
| Qualcomm Snapdragon S4 Plus MSM8960 chipset | Qualcomm Snapdragon 870 SM8250-AC (7 nm) chipset |
| Krait (Dual-Core 1500 MHz) processor | processor |
| 2 GB (500 MHz) RAM | 8 GB RAM |
| Adreno 225 (400 MHz) GPU | Adreno 650 GPU |
| 8.46 | 6.21 |
| Storage | |
| 16 GB internal memory | 128 GB internal memory |
| microSD, microSDHC, microSDXC (up to 64 GB) external memory slot | No SD card slot |
| 6.16 | 10.1 |
| Camera | |
| 8.00 MP + 1.90 MP | 50.00 MP + 32.00 MP |
| f/2.60 aperture | f/1.90 aperture |
| -- | 50.00mm focal length |
| 0.33 inches (1/3") sensor | -- |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (24 fps) video resolution |
| -- | 1920 x 1080 (960 fps) (Full HD) slow motion video |
| 8.47 | 11.88 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSUPA, UMTS, EDGE, GPRS and GSM | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA |
| Micro SIM | Nano SIM, Dual SIM |
| 7 | 10.6 |
| Battery Life | |
| 2100mAh Li-Ion Battery | 4500mAh Battery |
| Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 199 hours standby time 8 hours talk time | -- |
| 4 | 6.32 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.1 |
| GPS | GPS |
| NFC | NFC |
| -- | Infra-red port |
| -- | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Xiaomi 12X has an overall score of 77.8, which is slightly better than the Galaxy S III AT&T's general score of 72.2. Although the Xiaomi 12X is extremely heavier than the Galaxy S III AT&T, it's a bit thinner and also way newer. Both of these phones work with Android OS (operating system), but the Xiaomi 12X has a newer 11 version and Galaxy S III AT&T has Android 4.3.
The Galaxy S III AT&T counts with a much better performing processing unit than Xiaomi 12X, because although it has lesser CPU cores and 6 GB less RAM memory, it also counts with an additional graphics processing unit. Xiaomi 12X counts with a little more vivid display than Galaxy S III AT&T, because it has a greater pixels quantity in each inch of screen, a way bigger display and a much higher 1080 x 2400 resolution.
Xiaomi 12X has a very superior storage capacity to install games and applications than Samsung Galaxy S III AT&T, because although it has no slot for external memory cards, it also counts with 112 GB more internal storage. The Xiaomi 12X features a much better battery lifetime than Samsung Galaxy S III AT&T, because it has 4500mAh of battery capacity against 2100mAh.
Xiaomi 12X counts with a much better camera than Galaxy S III AT&T, because it has a much bigger aperture, a much better video quality and a lot more MP camera.
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