Compare phones
| Global Score | |
| 84.1 | 80.1 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11, 10 | Android 15 |
| 2020-03-23 | -- |
| 6.26 x 2.96 x 0.35 inches | -- |
| 6.63 ounces | -- |
| Midnight blue and Raven black | -- |
| Plastic and Plastic | -- |
| Scratch-Resistant Glass | -- |
| Display / Screen | |
| 6.4 inches | 6.7 inches |
| 2340 x 1080 pixels | -- |
| Super AMOLED | AMOLED |
| 403 pixels per inch | -- |
| 420 cd/m2 brightness | 3000 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.4 | 5 |
| Performance | |
| Exynos 9611 chipset | Qualcomm Snapdragon 8 Elite SM8750-AB (4 nm) chipset |
| Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | processor |
| 4 GB RAM | 16 GB RAM |
| Mali-G72 MP3 GPU | Adreno 830 GPU |
| 9.27 | 6.3 |
| Storage | |
| 64 GB internal memory | 512 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | No SD card slot |
| 11.74 | 17.6 |
| Camera | |
| 48.00 MP + 20.00 MP | 200.00 MP + 32.00 MP |
| f/2.00 aperture | -- |
| 26.00mm focal length | -- |
| 0.5 inches (1/2") sensor | -- |
| 3840 x 2160 (30 fps) (4K) video resolution | 7680 x 4320 (30 fps) video resolution |
| 1920 x 1080 (240 fps) (Full HD) slow motion video | 1920 x 1080 (1920 fps) (Full HD) slow motion video |
| 11.55 | 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, Dual SIM | Nano SIM |
| 6.7 | 7.6 |
| Battery Life | |
| 6000mAh Li - Polymer Battery | 6000mAh Si - Carbon Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 7.52 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.4 |
| GPS | GPS |
| -- | NFC |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Gyroscope and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| FM Radio | -- |
Comparison review
Samsung Galaxy M21 is a little bit better than Xiaomi 15 Ultra (Rumored), with a overall score of 84.1 against 80.1. Both of these devices have Android operating system, but Samsung Galaxy M21 has the previous 11 version and Xiaomi 15 Ultra (Rumored) has Android 15. The Samsung Galaxy M21 counts with a much more powerful CPU than Xiaomi 15 Ultra (Rumored), although it has a lower amount of RAM memory, they both have a Octa-Core processor.
Samsung Galaxy M21 has a much more vibrant display than Xiaomi 15 Ultra (Rumored), although it has much less brightness and a little smaller screen. The Xiaomi 15 Ultra (Rumored) counts with a way bigger storage to store more games and applications than Galaxy M21, because although it has no slot for external memory cards, it also counts with 448 GB more internal memory capacity.
The Xiaomi 15 Ultra (Rumored)'s battery performance is very similar to the Galaxy M21 one. The Xiaomi 15 Ultra (Rumored) captures much clearer photographs and videos than Galaxy M21, because it has a camera with a way higher 200 MP resolution and a much higher 7680x4320 video quality.
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