Compare phones
| Global Score | |
| 83.3 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 11, 9.0 Pie | Android 11, 10 |
| 2019-09-29 | 2020-03-23 |
| 6.26 x 2.96 x 0.35 inches | 6.26 x 2.96 x 0.35 inches |
| 6.63 ounces | 6.63 ounces |
| Black, Blue and White | Midnight blue and Raven black |
| Plastic | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| Display / Screen | |
| 6.4 inches | 6.4 inches |
| 2340 x 1080 pixels | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 403 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 8.1 | 8.4 |
| Performance | |
| Samsung Exynos 9611 chipset | Exynos 9611 chipset |
| ARM Cortex-A73 and ARM Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 4 GB RAM | 4 GB RAM |
| Mali-G72 MP3 GPU | Mali-G72 MP3 GPU |
| 9.27 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 512 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 11.74 | 11.74 |
| Camera | |
| 48.00 MP + 16.00 MP | 48.00 MP + 20.00 MP |
| f/2.00 aperture | f/2.00 aperture |
| 12.00mm focal length | 26.00mm focal length |
| 0.5 inches (1/2") sensor | 0.5 inches (1/2") sensor |
| 3840 x 2160 (30 fps) (4K) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| 1280 x 720 (240 fps) (HD) slow motion video | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 11.44 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 6.7 |
| Battery Life | |
| 6000mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 7.52 | 7.52 |
| Other Features | |
| Bluetooth 5.0 | 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 | FM Radio |
Comparison review
Galaxy M21 is slightly better than Galaxy M30s, getting an 84.1 score against 83.3. Both of these phones use the same Android 11 OS (operating system), so you shouldn't see any differences regarding operating system features. The Galaxy M21 construction has the same weight and thickness than Galaxy M30s.
The Galaxy M21 counts with a little more vivid display than Samsung Galaxy M30s. Both have a same size screen, a higher number of pixels per inch of screen and an equal 1080 x 2340 resolution. Galaxy M21's storage for applications and games is very similar to the Samsung Galaxy M30s one, both of them have a SD memory card expansion slot that allows up to 512 GB and the same 64 GB internal memory capacity.
The Samsung Galaxy M30s and the Samsung Galaxy M21 both have really similar processing units, both of them have the same number of cores and the same RAM memory amount. Samsung Galaxy M21 counts with a battery life that's very similar to Galaxy M30s's battery performance. Galaxy M21 shoots clearer pictures and videos than Samsung Galaxy M30s. Both have the same 30 fps video frame rates, a 0.5 inches sensor, a same size aperture, a 48 mega pixels resolution camera and the same video definition.
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