| Global Score | |
| 80.1 | 87.4 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 15 | Android 5.0 |
| -- | 2015-04-11 |
| -- | 5.65 x 2.78 x 0.27 inches |
| -- | 4.87 ounces |
| -- | Black, Blue, Gold and White |
| -- | Aluminium and Glass |
| -- | Scratch-Resistant Glass |
| -- | $ 252.00 |
| Display / Screen | |
| 6.7 inches | 5.1 inches |
| -- | 1440 x 2560 pixels (Quad HD / 2K) |
| AMOLED | Super AMOLED |
| -- | 576 pixels per inch |
| 3000 cd/m2 brightness | -- |
| No touch screen | Capacitive, Multi-touch |
| 5 | 9.9 |
| Performance | |
| Qualcomm Snapdragon 8 Elite SM8750-AB (4 nm) chipset | Exynos 7 Octa 7420 chipset |
| processor | 64-bit ARM Cortex-A57 (Quad-Core 2100 MHz + Quad-Core 1500 MHz) processor |
| 16 GB RAM | 3 GB (1600 MHz) RAM |
| Adreno 830 GPU | Mali-T760 MP8 (650 MHz) GPU |
| 6.3 | 10.08 |
| Storage | |
| 512 GB internal memory | 128 GB internal memory |
| No SD card slot | No SD card slot |
| 17.6 | 10.1 |
| Camera | |
| 200.00 MP + 32.00 MP | 16.00 MP + 5.00 MP |
| -- | f/1.90 aperture |
| -- | 28.00mm focal length |
| -- | 0.38 inches (1/2.6") sensor |
| 7680 x 4320 (30 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (1920 fps) (Full HD) slow motion video | -- |
| 12.87 | 10.01 |
| Networks | |
| -- | Wi-Fi |
| -- | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA, HSUPA, UMTS, EDGE, GPRS and GSM |
| Nano SIM | Nano SIM, Dual SIM |
| 7.6 | 6.7 |
| Battery Life | |
| 6000mAh Si - Carbon Battery | 2550mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | Wireless Charging |
| 7.52 | 4.56 |
| Other Features | |
| Bluetooth 5.4 | Bluetooth 4.1 |
| GPS | GPS |
| NFC | NFC |
| Infra-red port | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Galaxy S6 has a global score of 87.4, which is just a bit better than Xiaomi 15 Ultra (Rumored)'s overall score of 80.1. Both phones in this comparison review come with Android operating system, but the Galaxy S6 has older 5.0 version and Xiaomi 15 Ultra (Rumored) has Android 15. The Samsung Galaxy S6 features a way better looking display than Xiaomi 15 Ultra (Rumored), although it has a much smaller display.
Xiaomi 15 Ultra (Rumored) counts with a very superior memory for applications and games than Galaxy S6, because it has 512 GB internal storage. Galaxy S6 features a much faster CPU than Xiaomi 15 Ultra (Rumored), because although it has less RAM memory, and they both have a Octa-Core processing unit, the Galaxy S6 also counts with a 64 bits processing unit and an additional graphics processor.
Xiaomi 15 Ultra (Rumored) has a much better battery duration than Samsung Galaxy S6, because it has a 135 percent greater battery size. Xiaomi 15 Ultra (Rumored) takes a lot better pictures and videos than Samsung Galaxy S6, because it has a much higher 7680x4320 video resolution and a way higher resolution back camera.
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