Compare phones
| Global Score | |
| 74.3 | 76.6 |
| Basic Information | |
| LG | OnePlus |
| Android 10 | Android 11 |
| 2020-04-27 | 2021-04-02 |
| 6.50 x 3.02 x 0.33 inches | 6.43 x 2.90 x 0.34 inches |
| 6.77 ounces | 6.95 ounces |
| Blue, Pink and Titanium | Forest Green, Morning Mist and Stellar Black |
| -- | Glass (Corning Gorilla Glass) |
| -- | Scratch-Resistant Glass |
| $ 190.00 | $ 890.00 |
| Display / Screen | |
| 6.5 inches | 6.7 inches |
| 1600 x 720 pixels | 3216 x 1440 pixels |
| IPS LCD | AMOLED |
| 270 pixels per inch | 526 pixels per inch |
| No touch screen | No touch screen |
| 7.3 | 8.8 |
| 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 | 8 GB RAM |
| PowerVR GE8320 GPU | Adreno 660 GPU |
| 9.27 | 9.63 |
| 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 | 48.00 MP + 16.00 MP |
| -- | f/1.80 aperture |
| -- | 23.00mm focal length |
| -- | 0.71 inches (1/1.4") sensor |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (30 fps) video resolution |
| -- | 1280 x 720 (480 fps) (HD) slow motion video |
| 8.91 | 12.65 |
| 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 | 4500mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.2 |
| GPS | GPS |
| NFC | NFC |
| Fingerprint ID Scanner | Fingerprint ID Scanner |
| Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor | Accelerometer, Compass, Gyroscope, Light Sensor and Proximity Sensor |
Comparison review
The OnePlus 9 Pro is a bit better than the LG K51S, with a 76.6 score against 74.3. Both of these phones include Android OS, but OnePlus 9 Pro has a more recent 11 version and LG K51S has Android 10. The OnePlus 9 Pro design is newer, but a little heavier and just a bit thicker than the LG K51S. The OnePlus 9 Pro counts with a bit superior processor than LG K51S, and although they both have a Octa-Core processor, the OnePlus 9 Pro also has more RAM.
The OnePlus 9 Pro features a much better looking screen than LG K51S, because it has a much higher 1440 x 3216 pixels resolution, a way greater pixel density and a quite bigger screen. The LG K51S features a much better storage capacity for games and applications than OnePlus 9 Pro, because although it has only 64 GB internal memory capacity, it also counts with an external memory slot that holds a maximum of 2 TB.
The OnePlus 9 Pro features a bit superior battery lifetime than LG K51S, because it has a 13 percent bigger battery size. OnePlus 9 Pro shoots much better videos and photos than LG K51S, because it has a way higher 7680x4320 video definition and a back-facing camera with way more mega pixels.
Although OnePlus 9 Pro is a better device, it costs a lot more money than the LG K51S, and it doesn't have such a good quality/price relation as LG K51S. If you want to save some dollars, you can get LG K51S, and give up a couple features and specs, but you will get the most out of your budget.
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