| Global Score | |
| 74.8 | 84.1 |
| Basic Information | |
| Samsung | Samsung |
| Android 4.4.2, 4.3, 4.1.2, 4.1.1 | Android 11, 10 |
| 2012-08-29 | 2020-03-23 |
| 5.94 x 3.17 x 0.37 inches | 6.26 x 2.96 x 0.35 inches |
| 6.44 ounces | 6.63 ounces |
| Blue, Pink and White | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| $ 215.00 | -- |
| Display / Screen | |
| 5.5 inches | 6.4 inches |
| 720 x 1280 pixels (HD) | 2340 x 1080 pixels |
| Super AMOLED | Super AMOLED |
| 267 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| Capacitive, Multi-touch | No touch screen |
| 8 | 8.4 |
| Performance | |
| Samsung Exynos 4 (4412) chipset | Exynos 9611 chipset |
| ARM Cortex-A9 (Quad-Core 1600 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 2 GB RAM | 4 GB RAM |
| ARM Mali-400 MP4 (Quad-Core 266 MHz) GPU | Mali-G72 MP3 GPU |
| 9.18 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSD, microSDHC, microSDXC (up to 64 GB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 9.46 | 11.74 |
| Camera | |
| 8.00 MP + 1.90 MP | 48.00 MP + 20.00 MP |
| -- | f/2.00 aperture |
| -- | 26.00mm focal length |
| -- | 0.5 inches (1/2") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (30 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 7.48 | 11.55 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE (4G), HSPA+ (4G), HSDPA, HSPA, HSUPA, UMTS, EDGE, GPRS and GSM | LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| SIM | Nano SIM, Dual SIM |
| 7 | 6.7 |
| Battery Life | |
| 3100mAh Li-Ion Battery | 6000mAh Li - Polymer Battery |
| Removable Battery | Non-Removable Battery |
| Wireless Charging | -- |
| 980 hours standby time 35 hours talk time | -- |
| 5.12 | 7.52 |
| Other Features | |
| Bluetooth 4.0 | Bluetooth 5.0 |
| GPS | GPS |
| NFC | -- |
| -- | Fingerprint ID Scanner |
| Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Gyroscope and Proximity Sensor |
| -- | FM Radio |
Galaxy M21 is better than Galaxy Note II, having an 84.1 score against 74.8. These phones come with Android OS (operating system), but Galaxy M21 has the previous 11 version while Galaxy Note II has Android 4.4.2. The Galaxy M21 construction is incredibly newer and just a little bit thinner, but just a bit heavier than the Galaxy Note II.
Samsung Galaxy M21 features a slightly better screen than Galaxy Note II, because it has a lot greater quantity of pixels per inch of screen, a bigger display and a way higher 1080 x 2340 resolution. The Galaxy M21 counts with a lot bigger storage for apps and games than Galaxy Note II, and although they both have equal internal storage, the Galaxy M21 also has an external memory slot that allows up to 512 GB.
Samsung Galaxy M21 features a little bit better performance than Galaxy Note II, because although it has doesn't have an additional GPU, it also counts with 4 more cpu cores and a larger amount of RAM. The Samsung Galaxy M21 shoots much clearer photographs and videos than Samsung Galaxy Note II, because it has a lot more MP camera in the back and a way higher 3840x2160 (4K) video resolution.
The Samsung Galaxy M21 has a way better battery lifetime than Galaxy Note II, because it has a 94% greater battery size.
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