Compare phones
| Global Score | |
| 76.1 | 80.1 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 10 | Android 15 |
| 2020-06-29 | -- |
| 6.61 x 3.02 x 0.32 inches | -- |
| 6.81 ounces | -- |
| Black | -- |
| Plastic and Plastic | -- |
| $ 194.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.7 inches |
| 1600 x 720 pixels | -- |
| IPS LCD | AMOLED |
| 270 pixels per inch | -- |
| -- | 3000 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.3 | 5 |
| Performance | |
| Mediatek Helio P35 chipset | Qualcomm Snapdragon 8 Elite SM8750-AB (4 nm) chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | processor |
| 3 GB RAM | 16 GB RAM |
| PowerVR GE8320 GPU | Adreno 830 GPU |
| 9.27 | 6.3 |
| Storage | |
| 32 GB internal memory | 512 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 9.84 | 17.6 |
| Camera | |
| 16.00 MP + 13.00 MP | 200.00 MP + 32.00 MP |
| f/1.80 aperture | -- |
| 0.33 inches (1/3.06") sensor | -- |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (30 fps) video resolution |
| -- | 1920 x 1080 (1920 fps) (Full HD) slow motion video |
| 9.35 | 12.87 |
| Networks | |
| Wi-Fi | -- |
| Mobile Hotspot | -- |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA |
| Nano SIM | Nano SIM |
| 6.7 | 7.6 |
| Battery Life | |
| 4000mAh Li - Polymer Battery | 6000mAh Si - Carbon Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.4 |
| GPS | GPS |
| NFC | NFC |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Xiaomi 15 Ultra (Rumored) has a general score of 80.1, which is a bit better than Galaxy A21's 76.1 global score. Both of these devices work with Android OS (operating system), but the Xiaomi 15 Ultra (Rumored) has the newer 15 version while Galaxy A21 has Android 10, so it counts with lots of additional features. Xiaomi 15 Ultra (Rumored) is a way thinner and much lighter cellphone than the Galaxy A21.
Samsung Galaxy A21 has a much faster CPU than Xiaomi 15 Ultra (Rumored), although it has a smaller amount of RAM memory, they both have the same number of cores. Samsung Galaxy A21 counts with a much better screen than Xiaomi 15 Ultra (Rumored), although it has a little smaller screen. Xiaomi 15 Ultra (Rumored) counts with a very superior camera than Galaxy A21, because it has a back-facing camera with lot more MP and a lot higher 7680x4320 video definition.
Xiaomi 15 Ultra (Rumored) features a way bigger storage for applications, games, photos and videos than Samsung Galaxy A21, because although it has no external memory card slot, it also counts with more internal memory. Xiaomi 15 Ultra (Rumored) has a much longer battery performance than Galaxy A21, because it has 6000mAh of battery capacity.
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