Compare phones
| Global Score | |
| 73.4 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 12 | Android 11, 10 |
| -- | 2020-03-23 |
| -- | 6.26 x 2.96 x 0.35 inches |
| -- | 6.63 ounces |
| -- | Midnight blue and Raven black |
| Aluminum and Glass | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| -- | 6.4 inches |
| -- | 2340 x 1080 pixels |
| -- | Super AMOLED |
| 431 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.3 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 8 Gen 1 Plus (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 |
| Yes 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 | |
| 108.00 MP | 48.00 MP + 20.00 MP |
| -- | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| -- | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 8.69 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| 5G, 5G | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM | Nano SIM, Dual SIM |
| 7 | 6.7 |
| Battery Life | |
| -- | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 1.36 | 7.52 |
| Other Features | |
| Bluetooth 5.2 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Comparison review
Samsung Galaxy M21 is much better than the Galaxy Z Fold 4, having an 84.1 score against 73.4. These phones use Android operating system, but Samsung Galaxy M21 has older 11 version and Galaxy Z Fold 4 has Android 12 version. Samsung Galaxy M21 counts with a much better performing CPU than Galaxy Z Fold 4, although it has a lower amount of RAM memory, they both have 8 cpu cores.
The Samsung Galaxy M21 counts with a sharper display than Galaxy Z Fold 4, although it has a bit inferior quantity of pixels per inch of screen. Galaxy M21 takes much better pictures and videos than Samsung Galaxy Z Fold 4, although it has a back facing camera with lot less MP. Galaxy Z Fold 4 counts with a bigger memory capacity for apps and games than Galaxy M21, because although it has no external memory card slot, it also counts with 192 GB more internal storage.
Samsung Galaxy M21 counts with a much longer battery lifetime than Galaxy Z Fold 4.
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