Compare phones
| Global Score | |
| 74.3 | 98.1 |
| Basic Information | |
| LG | Samsung |
| Android 10 | Android 11 |
| 2020-04-27 | 2021-01-29 |
| 6.50 x 3.02 x 0.33 inches | 6.50 x 2.98 x 0.35 inches |
| 6.77 ounces | 8.04 ounces |
| Blue, Pink and Titanium | Phantom black and Silver |
| -- | Aluminum and Glass (Corning Gorilla Glass Victus) |
| -- | Scratch-Resistant Glass |
| $ 190.00 | $ 966.00 |
| Display / Screen | |
| 6.5 inches | 6.8 inches |
| 1600 x 720 pixels | 3200 x 1440 pixels |
| IPS LCD | Dynamic AMOLED |
| 270 pixels per inch | 516 pixels per inch |
| -- | 1500 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.3 | 9.8 |
| Performance | |
| MediaTek Helio P35 MT6765 chipset | Qualcomm Snapdragon 888 chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit, 5 nm (Octa-Core 2840 MHz) processor |
| 3 GB RAM | 12 GB RAM |
| PowerVR GE8320 GPU | Adreno 660 GPU |
| 9.27 | 9.72 |
| Storage | |
| 64 GB internal memory | 128 GB internal memory |
| microSDXC (up to 2 TB) external memory slot | No SD card slot |
| 14.74 | 10.1 |
| Camera | |
| 32.00 MP + 13.00 MP | 108.00 MP + 40.00 MP |
| -- | f/1.80 aperture |
| -- | 24.00mm focal length |
| -- | 0.75 inches (1/1.33") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (24 fps) video resolution |
| -- | 1280 x 720 (960 fps) (HD) slow motion video |
| 8.91 | 13.75 |
| Networks | |
| Wi-Fi | Wi-Fi |
| Mobile Hotspot | Mobile Hotspot |
| LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA | 5G, 5G, LTE-A (4G), LTE (4G), HSPA+ (4G), HSDPA and HSUPA |
| Nano SIM, Dual SIM | Nano SIM |
| 6.7 | 10.7 |
| Battery Life | |
| 4000mAh Battery | 5000mAh Li - Polymer Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 6.8 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Barometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
| -- | FM Radio |
Comparison review
The Samsung Galaxy S21 Ultra is much better than the LG K51S, having a 98.1 score against 74.3. Although the Samsung Galaxy S21 Ultra is newer than LG K51S, it is heavier and just a little thicker. Both phones in our current comparison use Android OS (operating system), but Samsung Galaxy S21 Ultra has a newer 11 version while LG K51S has Android 10 version.
The Samsung Galaxy S21 Ultra counts with just a bit better performance than LG K51S, and although they both have a Octa-Core processor, the Samsung Galaxy S21 Ultra also has 9 GB more RAM. Samsung Galaxy S21 Ultra features a much better looking display than LG K51S, because it has a little bigger display, much more pixels per inch of display and a lot higher 1440 x 3200px resolution.
The Samsung Galaxy S21 Ultra features a much better camera than LG K51S, because it has a lot higher video quality and a back camera with much more mega-pixels. LG K51S counts with a much better storage capacity to install applications and games or saving photos and videos than Galaxy S21 Ultra, because although it has only 64 GB internal memory, it also counts with an external SD slot that admits up to 2 TB.
The Galaxy S21 Ultra counts with longer battery performance than LG K51S, because it has a 5000mAh battery size.
The Galaxy S21 Ultra is a lot more expensive than the LG K51S, but you can get a much better phone for that extra money.
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