Compare phones
| Global Score | |
| 11.67 | 9.41 |
| Basic Information | |
| Samsung | Samsung |
| Android 11 | Android 10, 9.0 Pie, 8.1 Oreo |
| 2021-01-29 | 2019-02-05 |
| 6.50 x 2.98 x 0.35 inches | 6.16 x 2.93 x 0.35 inches |
| 8.04 ounces | 6.56 ounces |
| Phantom black and Silver | Charcoal black and Ocean blue |
| Aluminum and Glass (Corning Gorilla Glass Victus) | Plastic and Plastic |
| Scratch-Resistant Glass | -- |
| $ 966.00 | -- |
| Display / Screen | |
| 6.8 inches | 6.3 inches |
| 3200 x 1440 pixels | 2340 x 1080 pixels |
| Dynamic AMOLED | IPS LCD |
| 516 pixels per inch | 409 pixels per inch |
| 1500 cd/m2 brightness | -- |
| No touch screen | No touch screen |
| 9.8 | 8 |
| Performance | |
| Qualcomm Snapdragon 888 chipset | Samsung Exynos 7 Octa 7904 chipset |
| Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor | ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 14 nm (Octa-Core 1800 MHz) processor |
| 12 GB RAM | 4 GB RAM |
| Adreno 660 GPU | Mali-G71 MP2 GPU |
| 9.72 | 8.91 |
| 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 | 13.00 MP + 8.00 MP |
| f/1.80 aperture | f/1.90 aperture |
| 24.00mm focal length | 12.00mm focal length |
| 0.75 inches (1/1.33") sensor | 0.32 inches (1/3.1") 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 | 9.02 |
| 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 | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 4.96 | 5.76 |
| Other Features | |
| Bluetooth 5.1 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope and Proximity Sensor |
| FM Radio | FM Radio |
Comparison review
Galaxy S21 Ultra is much better than the Samsung Galaxy M20, having a score of 11.67 against 9.41. Both devices we compare here use Android OS (Operating System), but the Galaxy S21 Ultra has a newer 11 version and Samsung Galaxy M20 has Android 10 version. Galaxy S21 Ultra's construction has the same thickness than Samsung Galaxy M20, but it is heavier.
The Samsung Galaxy S21 Ultra features a little better performance than Samsung Galaxy M20, and although they both have a Octa-Core CPU, the Samsung Galaxy S21 Ultra also has a larger amount of RAM memory. Samsung Galaxy S21 Ultra features a much better display than Galaxy M20, because it has a higher screen density, a little bit larger display and a better 1440 x 3200 resolution.
Galaxy S21 Ultra captures way better photos and videos than Galaxy M20, because it has a camera with lot more mega pixels, a bigger diafragm aperture to take better images and video in poorly lited environments, a much bigger camera sensor providing a way higher image quality and a much higher video quality.
The Galaxy M20 features more storage capacity for applications and games than Galaxy S21 Ultra, because although it has less internal storage, it also counts with a slot for SD memory cards that supports up to 512 GB. The Samsung Galaxy M20 features longer battery lifetime than Galaxy S21 Ultra.