Compare phones
| Global Score | |
| 98.1 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 11, 10 |
| 2021-01-29 | 2020-03-23 |
| 6.50 x 2.98 x 0.35 inches | 6.26 x 2.96 x 0.35 inches |
| 8.04 ounces | 6.63 ounces |
| Phantom black and Silver | Midnight blue and Raven black |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Plastic and Plastic |
| Scratch-Resistant Glass | Scratch-Resistant Glass |
| $ 966.00 | -- |
| Display / Screen | |
| 6.8 inches | 6.4 inches |
| 3200 x 1440 pixels | 2340 x 1080 pixels |
| Dynamic AMOLED | Super AMOLED |
| 516 pixels per inch | 403 pixels per inch |
| 1500 cd/m2 brightness | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 9.8 | 8.4 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Exynos 9611 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Mali-G72 MP3 GPU |
| 9.72 | 9.27 |
| 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 + 20.00 MP |
| f/1.80 aperture | f/2.00 aperture |
| 24.00mm focal length | 26.00mm focal length |
| 0.75 inches (1/1.33") sensor | 0.5 inches (1/2") sensor |
| 7680 x 4320 (24 fps) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (960 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 13.75 | 11.55 |
| 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 Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 6.8 | 7.52 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy S21 Ultra has an overall score of 98.1, which is much better than the Galaxy M21's 84.1 overall score. The Galaxy S21 Ultra construction has the same thickness than the Galaxy M21, but it is somewhat heavier. Both of these phones have the same Android 11 OS (Operating System), so both of them should give very similar operating system features.
Samsung Galaxy S21 Ultra counts with a bit better processor than Galaxy M21, and although they both have a Octa-Core CPU, the Samsung Galaxy S21 Ultra also has 8 GB more RAM. The Samsung Galaxy S21 Ultra features a better looking display than Samsung Galaxy M21, because it has a quite larger display, a greater pixel number in each inch of screen, way more screen brightness and a higher 1440 x 3200 pixels resolution.
The Galaxy M21 counts with a better memory capacity to install games and applications than Galaxy S21 Ultra, because although it has less internal memory capacity, it also counts with a slot for an external memory card that supports a maximum of 512 GB. The Samsung Galaxy S21 Ultra counts with a much better camera than Samsung Galaxy M21, because it has a much larger back camera sensor shooting lot better quality videos and photographs, a way more megapixels back-facing camera, a lot better video resolution and a larger aperture.
The Samsung Galaxy M21 features longer battery life than Galaxy S21 Ultra, because it has a 20% bigger battery capacity.
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