| Hardware and OS | LG K40 | |
| Operating system | Android 8.1 (Oreo) | |
| Processor | Octa-core 2.0 GHz Cortex-A53 | |
| Chipset | Mediatek MT6762 Helio P22 (12 nm) | |
| GPU | PowerVR GE8320 | |
| Internal memory | 32 GB, 2/3 GB RAM | |
| External memory | microSD, up to 512 GB (dedicated slot) | |
| Display | LG K40 | other phones |
| Type | IPS LCD | |
| Size | 5.7" inc | |
| Resolution | 720 x 1440 px | |
| Touchscreen | capacitive touchscreen | |
| Screen-to-Body Ratio | 76.2% | |
| Display area | 83.8 cm2 | |
| Display aspect ratio | 18:9 (height:width) | |
| Pixel Density | 282 PPI | |
| Colors | 16M | |
| Connectivity | LG K40 | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) | |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | |
| 4G Network | LTE | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | |
| Network | GSM / HSPA / LTE | |
| SIM card | Single SIM (Nano-SIM)Dual SIM (Nano-SIM, dual stand-by) | |
| Bluetooth | 5.0, A2DP, LE | |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS | |
| Speed | HSPA, LTE-A | |
| USB | microUSB 2.0 | |
| Camera | LG K40 | other phones |
| Main camera | 16 MP, Single | |
| Specs | 16 MP, f/2.0, PDAF | |
| Features | LED flash, panorama, HDR | |
| Video | 1080p@30fps | |
| Selfie camera | 8 MP, Single | |
| Multimedia | LG K40 | other phones |
| 3.5 mm Jack | Yes | |
| Radio | FM radio | |
| Design | LG K40 | other phones |
| Colors | Black, Platinum, Blue | |
| Body build | Front glass, plastic body | |
| Dimensions | 153 x 71.9 x 8.3 mm | |
| Weight | 150 g | |
| Battery | LG K40 | other phones |
| Battery capacity | 3000 mAh, Non-removable Li-Ion | |
| Other | LG K40 | other phones |
| Release date | 2019, February | |
| Sensors | Fingerprint (rear-mounted), accelerometer, proximity | |
