Compare phones
| Global Score | |
| 74.3 | 84.1 |
| Basic Information | |
| LG | Samsung |
| Android 10 | Android 11, 10 |
| 2020-04-27 | 2020-03-23 |
| 6.50 x 3.02 x 0.33 inches | 6.26 x 2.96 x 0.35 inches |
| 6.77 ounces | 6.63 ounces |
| Blue, Pink and Titanium | Midnight blue and Raven black |
| -- | Plastic and Plastic |
| -- | Scratch-Resistant Glass |
| $ 190.00 | -- |
| Display / Screen | |
| 6.5 inches | 6.4 inches |
| 1600 x 720 pixels | 2340 x 1080 pixels |
| IPS LCD | Super AMOLED |
| 270 pixels per inch | 403 pixels per inch |
| -- | 420 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.3 | 8.4 |
| Performance | |
| MediaTek Helio P35 MT6765 chipset | Exynos 9611 chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm (Octa-Core 2300 MHz) processor |
| 3 GB RAM | 4 GB RAM |
| PowerVR GE8320 GPU | Mali-G72 MP3 GPU |
| 9.27 | 9.27 |
| Storage | |
| 64 GB internal memory | 64 GB internal memory |
| microSDXC (up to 2 TB) external memory slot | microSDXC (up to 512 GB) external memory slot |
| 14.74 | 11.74 |
| Camera | |
| 32.00 MP + 13.00 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 |
| 8.91 | 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 | |
| 4000mAh Battery | 6000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 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 |
Comparison review
The Galaxy M21 has a general score of 84.1, which is better than the LG K51S's 74.3 overall score. The Galaxy M21 body is a bit lighter but just a little bit thicker than the LG K51S, and both of them were released with only 1 months difference. Both of these devices use Android OS, but Galaxy M21 has the newer 11 version while LG K51S has Android 10 version, so it provides you lots of additional features and performance enhancements.
The Galaxy M21 has a processor that is very similar to the LG K51S one, and although the Galaxy M21 has 1 GB more RAM memory, they both have a Octa-Core processing unit. The Galaxy M21 counts with a brighter screen than LG K51S, because although it has a bit smaller screen, it also counts with a higher quantity of pixels per inch in the display and a much better resolution of 1080 x 2340px.
Samsung Galaxy M21 features a very superior camera than LG K51S, because it has a camera in the back with a much better resolution and a lot higher 3840x2160 (4K) video definition. The LG K51S has a way bigger memory for games and applications than Galaxy M21, and although they both have exactly the same internal memory capacity, the LG K51S also has an external memory card slot that holds up to 2 TB.
Galaxy M21 has a much longer battery duration than LG K51S, because it has a 50 percent bigger battery capacity.
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