Compare phones
| Global Score | |
| 74.3 | 85.3 |
| Basic Information | |
| LG | Microsoft |
| Android 10 | Android 11 |
| 2020-04-27 | 2021-09-20 |
| 6.50 x 3.02 x 0.33 inches | 5.72 x 7.26 x 0.22 inches |
| 6.77 ounces | 10.02 ounces |
| Blue, Pink and Titanium | Glacier and Obsidian |
| -- | Glass (Corning Gorilla Glass) |
| -- | Scratch-Resistant Glass |
| $ 190.00 | $ 540.00 |
| Display / Screen | |
| 6.5 inches | 8.3 inches |
| 1600 x 720 pixels | 2688 x 1892 pixels |
| IPS LCD | AMOLED |
| 270 pixels per inch | 396 pixels per inch |
| -- | 800 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.3 | 8.8 |
| Performance | |
| MediaTek Helio P35 MT6765 chipset | Qualcomm Snapdragon 888 SM8350 (5 nm) chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | Kryo 680, 64-bit (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 | 12.00 MP + 12.00 MP |
| -- | f/1.70 aperture |
| -- | 27.00mm focal length |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 3840 x 2160 (60 fps) (4K) video resolution |
| -- | 1920 x 1080 (240 fps) (Full HD) slow motion video |
| 8.91 | 10.01 |
| 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) and HSDPA |
| Nano SIM, Dual SIM | Nano SIM, Dual SIM |
| 6.7 | 10.6 |
| Battery Life | |
| 4000mAh Battery | 4449mAh Battery |
| Non-Removable Battery | Non-Removable Battery |
| 5.92 | 6.32 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.1 |
| GPS | GPS |
| 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
Microsoft Surface Duo 2 is much better than the LG K51S, having an 85.3 score against 74.3. Even though the Microsoft Surface Duo 2 is noticeably heavier than LG K51S, it's notably thinner and newer. Both of these phones include Android operating system, but the Microsoft Surface Duo 2 has the newer 11 version and LG K51S has Android 10, offering a couple additional features and performance improvements.
Microsoft Surface Duo 2 counts with a much better looking screen than LG K51S, because it has a lot better 1892 x 2688px resolution, a greater pixel density and a larger screen. The LG K51S features a very superior memory capacity for applications and games than Microsoft Surface Duo 2, because although it has just 64 GB internal memory, it also counts with a SD memory card expansion slot that supports a maximum of 2 TB.
Microsoft Surface Duo 2 counts with a bit better CPU than LG K51S, and although they both have 8 cpu cores, the Microsoft Surface Duo 2 also has more RAM memory. Microsoft Surface Duo 2 counts with a little better battery performance than LG K51S, because it has 4449mAh of battery capacity. Microsoft Surface Duo 2 takes much clearer pictures and videos than LG K51S, because although it has a much less mega-pixels back-facing camera, it also counts with a much better video quality.
Although Microsoft Surface Duo 2 is a better device, it costs a lot more than the LG K51S, and it doesn't have such a good quality/price relation as the LG K51S. If you want to save a few dollars, you can get the LG K51S, letting go some specs and features, but you will get the most out of your money.
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