Compare phones
| Global Score | |
| 11.67 | 9.31 |
| Basic Information | |
| Samsung | Xiaomi |
| Android 11 | Android 10 |
| 2021-01-29 | 2020-11-27 |
| 6.50 x 2.98 x 0.35 inches | 6.39 x 3.04 x 0.38 inches |
| 8.04 ounces | 6.98 ounces |
| Phantom black and Silver | Cool blue, Power black and Yellow |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 966.00 | $ 149.00 |
| Display / Screen | |
| 6.8 inches | 6.5 inches |
| 3200 x 1440 pixels | 2340 x 1080 pixels |
| Dynamic AMOLED | IPS LCD |
| 516 pixels per inch | 396 pixels per inch |
| 1500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.8 | 8 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Qualcomm Snapdragon 662 SM6115 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Kryo 260, 64-bit, 11 nm (Octa-Core 2000 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Adreno 610 GPU |
| 9.72 | 9.09 |
| Storage | |
| 128 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 10.1 | 11.74 |
| Camera | |
| 108.00 MP + 40.00 MP | 48.00 MP + 8.00 MP |
| f/1.80 aperture | f/1.80 aperture |
| 24.00mm focal length | -- |
| 0.75 inches (1/1.33") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 1920 x 1080 (30 fps) (Full HD) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | -- |
| 13.75 | 10.78 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 10.7 | 6.7 |
| Battery Life | |
| 5000mAh Li - Polymer Battery | 6000mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 4.96 | 6.16 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| -- | Infra-red port |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Light Sensor and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy S21 Ultra has a general score of 11.67, which is a lot better than the Xiaomi Poco M3's 9.31 overall score. These devices come with Android OS, but the Galaxy S21 Ultra has the newer 11 version while Xiaomi Poco M3 has Android 10, so it provides you a couple nice extra features. The Galaxy S21 Ultra design is somewhat heavier but a little bit thinner than Xiaomi Poco M3, and both of them were released only a couple months apart.
Samsung Galaxy S21 Ultra features a way better display than Xiaomi Poco M3, because it has a higher 1440 x 3200 resolution, a higher display density and a little larger display. Xiaomi Poco M3 counts with a better memory capacity to install applications and games than Samsung Galaxy S21 Ultra, because although it has only 64 GB internal memory, it also counts with a SD memory slot that admits a maximum of 512 GB.
The Samsung Galaxy S21 Ultra has just a bit better hardware performance than Xiaomi Poco M3, and although they both have the same number of cores, the Samsung Galaxy S21 Ultra also has a greater amount of RAM. The Xiaomi Poco M3 features a much better battery duration than Samsung Galaxy S21 Ultra, because it has 6000mAh of battery capacity against 5000mAh.
Samsung Galaxy S21 Ultra shoots a lot better videos and photos than Xiaomi Poco M3, and although they both have the same aperture, the Samsung Galaxy S21 Ultra also has a back-facing camera with a lot better resolution, a lot better 7680x4320 video quality and a lot larger sensor shooting way higher quality videos and pictures.
Although Samsung Galaxy S21 Ultra is a better device, it costs a lot more than the Xiaomi Poco M3, and it doesn't have such a good relation between it's price and quality as Xiaomi Poco M3. If you want to save a few dollars, you can buy the Xiaomi Poco M3, letting go a few specs and features, but you'll get the most with your money.