| Hardware and OS | LG Harmony 4 | |
| Operating System | Android v10 | |
| Processor | 2 GHz, Octa Core Processor | |
| Cores | 4x 2.0 GHz 4x 1.5 GHz cores | |
| RAM | 3 GB | |
| Internal Memory | 32 GB | |
| Memory Card Slot | Yes, upto 2 TB | |
| Dual Sim | No | |
| Sim Size | Nano SIM | |
| Sim Type | Single Sim, GSM | |
| Display | LG Harmony 4 | other phones |
| Screen Size | 6.1 inches, 720 x 1560 pixels | |
| Display Type | Color IPS LCD screen (16M) | |
| Pixel Density | ~282 PPI | |
| Touch Screen | Yes, with Multitouch | |
| Display aspect ratio | 19.5:9 | |
| Connectivity | LG Harmony 4 | other phones |
| 3G Network | Yes | |
| 4G Network | Yes | |
| Bluetooth | Yes, v5.0 | |
| EDGE | Yes | |
| GPRS | Yes | |
| GPS | Yes | |
| USB | Yes, USB-C | |
| USB Features | USB Charging | |
| VoLTE | Yes, Dual Stand-By | |
| Wifi | Yes, with wifi-hotspot | |
| Camera | LG Harmony 4 | other phones |
| Main camera | 13 MP (Main)
5 MP (Depth Sensor) | |
| Video Recording | 1080p @ 30fps FHD | |
| Flash | Yes, LED | |
| Selfie camera | 8 MP | |
| Front Video Recording | 1080p @ 30fps FHD | |
| Multimedia | LG Harmony 4 | other phones |
| Headphone jack | Yes | |
| Email | Yes | |
| FM Radio | No | |
| Music | Yes | |
| Video | Yes | |
| Browser | Yes | |
| Java | No | |
| Design | LG Harmony 4 | other phones |
| Dimensions | 156.21 x 74.1 x 8.6 mm | |
| Weight | 173 g | |
| Battery | LG Harmony 4 | other phones |
| Battery capacity | 3500 mAh | |
| Type | Non-Removable Battery | |
| Talk Time | 12 hours | |
| Fast Charging | Yes | |
