Compare phones
| Global Score | |
| 84.3 | 84.1 |
| Basic Information | |
| Xiaomi | Samsung |
| Android 14 | Android 11, 10 |
| 2024-07-19 | 2020-03-23 |
| 6.28 x 5.64 x 0.18 inches | 6.26 x 2.96 x 0.35 inches |
| 7.97 ounces | 6.63 ounces |
| Black, Blue and White | Midnight blue and Raven black |
| Aluminum and Glass | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 8 inches | 6.4 inches |
| 2488 x 2224 pixels | 2340 x 1080 pixels |
| AMOLED | Super AMOLED |
| 417 pixels per inch | 403 pixels per inch |
| 3000 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 10 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 8 Gen 3 SM8650-AB (4 nm) chipset | Exynos 9611 chipset |
| processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Adreno 750 GPU | Mali-G72 MP3 GPU |
| 6.21 | 9.27 |
| Storage | |
| 256 GB internal memory | 64 GB internal memory |
| No SD card slot | microSDXC (up to 512 GB) external memory slot |
| 13.3 | 11.74 |
| Camera | |
| 50.00 MP + 16.00 MP | 48.00 MP + 20.00 MP |
| f/1.70 aperture | f/2.00 aperture |
| 23.00mm focal length | 26.00mm focal length |
| 0.67 inches (1/1.49") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1920 x 1080 (960 fps) (Full HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 12.54 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G) and HSDPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 10.6 | 6.7 |
| Battery Life | |
| 5100mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.88 | 7.52 |
| Other Features | |
| Bluetooth 5.4 | 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, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Xiaomi Mi Mix Fold 4 is slightly better than the Samsung Galaxy M21, getting an 84.3 score against 84.1. Both phones we compare here have Android OS (Operating System), but Xiaomi Mi Mix Fold 4 has a more recent 14 version and Samsung Galaxy M21 has Android 11, so it provides some extra features and performance optimizations. Although Xiaomi Mi Mix Fold 4 is somewhat heavier than the Samsung Galaxy M21, it's thinner and much newer.
Samsung Galaxy M21 has a way better processing power than Xiaomi Mi Mix Fold 4, although it has a lower amount of RAM, they both have a Octa-Core CPU. The Xiaomi Mi Mix Fold 4 has a better looking screen than Galaxy M21, because it has a larger screen, way more screen brightness, a way higher resolution of 2224 x 2488 and a just a little more pixels per screen inch.
The Xiaomi Mi Mix Fold 4 captures a bit better videos and photos than Samsung Galaxy M21, because it has a back camera with more mega-pixels, a lot larger back-facing camera sensor taking much better quality videos and photographs, a larger aperture and a lot better video resolution. The Xiaomi Mi Mix Fold 4 features a bigger storage to install applications and games or saving photos and videos than Samsung Galaxy M21, because although it has no SD extension slot, it also counts with 256 GB internal memory.
The Galaxy M21 features a little better battery life than Xiaomi Mi Mix Fold 4, because it has 6000mAh of battery capacity instead of 5100mAh.
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