Compare phones
| Global Score | |
| 74.3 | 79.2 |
| Basic Information | |
| LG | Motorola |
| Android 10 | Android 15 |
| 2020-04-27 | 2025-04-24 |
| 6.50 x 3.02 x 0.33 inches | -- |
| 6.77 ounces | 7.02 ounces |
| Blue, Pink and Titanium | -- |
| $ 190.00 | -- |
| Display / Screen | |
| 6.5 inches | 7 inches |
| 1600 x 720 pixels | -- |
| IPS LCD | LTPO |
| 270 pixels per inch | -- |
| -- | 4500 cd/m2 brightness |
| No touch screen | No touch screen |
| 7.3 | 5.5 |
| Performance | |
| MediaTek Helio P35 MT6765 chipset | Qualcomm Snapdragon 8 Elite SM8750-AB (3 nm) chipset |
| Arm Cortex-A53, 64-bit, 12 nm (Octa-Core 2300 MHz) processor | processor |
| 3 GB RAM | 16 GB RAM |
| PowerVR GE8320 GPU | Adreno 830 GPU |
| 9.27 | 6.3 |
| Storage | |
| 64 GB internal memory | 512 GB internal memory |
| microSDXC (up to 2 TB) external memory slot | No SD card slot |
| 14.74 | 17.6 |
| Camera | |
| 32.00 MP + 13.00 MP | 50.00 MP + 50.00 MP |
| -- | f/1.80 aperture |
| 1920 x 1080 (30 fps) (Full HD) video resolution | 7680 x 4320 (30 fps) video resolution |
| -- | 3840 x 2160 (60 fps) (4K) slow motion video |
| 8.91 | 11.99 |
| Networks | |
| Wi-Fi | -- |
| 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 |
| 6.7 | 7.6 |
| Battery Life | |
| 4000mAh Battery | 4700mAh Li - Ion Battery |
| Non-Removable Battery | Non-Removable Battery |
| -- | Wireless Charging |
| 5.92 | 6.56 |
| Other Features | |
| Bluetooth 5.0 | Bluetooth 5.4 |
| 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 |
Comparison review
Motorola Razr Ultra (2025) is just a bit better than LG K51S, getting a 79.2 score against 74.3. These devices use Android OS (operating system), but Motorola Razr Ultra (2025) has 15 version while LG K51S has Android 10 version. Motorola Razr Ultra (2025)'s construction is extremely newer and noticeably thinner than LG K51S's, but it is just a bit heavier.
The LG K51S features a much better performing CPU than Motorola Razr Ultra (2025), although it has a lower amount of RAM memory, they both have a Octa-Core processor. LG K51S counts with a lot better screen than Motorola Razr Ultra (2025), although it has a bit smaller display. The Motorola Razr Ultra (2025) shoots much better photos and videos than LG K51S, because it has a way more mega-pixels back-facing camera and a lot higher 7680x4320 video definition.
Motorola Razr Ultra (2025) counts with a bigger memory capacity to store more apps and games than LG K51S, because although it has no slot for an SD memory card, it also counts with more internal memory. Motorola Razr Ultra (2025) has better battery lifetime than LG K51S, because it has an 18 percent more battery size.
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