| Hardware and OS | LG G3 | |
| Operating system | Android 4.4.2 (KitKat), upgradable to 6.0 (Marshmallow) | |
| Processor | Quad-core 2.5 GHz Krait 400 | |
| Chipset | Qualcomm MSM8974AC Snapdragon 801 (28 nm) | |
| Internal memory | 16GB 2GB RAM, 32GB 3GB RAM | |
| External memory | microSDXC (dedicated slot) | |
| GPU | Adreno 330 | |
| Display | LG G3 | other phones |
| Size | 5.5 inches, 82.2 cm2 | |
| Resolution | 1440 x 2560 pixels, 16:9 ratio | |
| Type | True HD-IPS LCD | |
| Protection | Corning Gorilla Glass 3 | |
| Main Camera | LG G3 | other phones |
| Camera | 13 MP, f/2.4, 29mm (standard), 1/3.1", 1.12µm, PDAF, Laser AF, OIS | |
| Features | Dual-LED dual-tone flash, panorama, HDR | |
| Video | 4K@30fps, 1080p@30fps, HDR, stereo sound rec. | |
| Selfie camera | LG G3 | other phones |
| Camera | 2.1 MP, f/2.0 | |
| Video | 1080p@30fps | |
| Connectivity | LG G3 | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - all versions | |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 - D855 | |
| 4G Network | 2, 4, 7, 17 - D851 | |
| Bluetooth | 4.0, A2DP, LE, aptX | |
| CDMA | HSDPA 850 / 1900 / 2100 - D850 | |
| GPS | Yes, with A-GPS, GLONASS | |
| Infrared port | Yes | |
| NFC | Yes | |
| Speed | HSPA 42.2/21.1 Mbps, LTE Cat4 150/50 Mbps | |
| Technology | GSM / HSPA / LTE | |
| USB | microUSB 2.0 (SlimPort), USB On-The-Go | |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot | |
| Multimedia | LG G3 | other phones |
| 3.5 mm Jack | Yes | |
| Loudspeaker | Yes | |
| Multimedia | 24-bit/192kHz audio | |
| Radio | Stereo FM radio, RDS - D855 model only | |
| Battery | LG G3 | other phones |
| Type | Li-Ion 3000 mAh, removable | |
| Charging | Qi wireless charging - optional | |
| Stand-by | Up to 565 h (2G) / Up to 553 h (3G) | |
| Talk time | Up to 19 h (2G) / Up to 21 h (3G) | |
| Design | LG G3 | other phones |
| Body build | Glass front (Gorilla Glass 3), plastic back, plastic frame | |
| Colors | Metallic Black, Silk White, Shine Gold, Moon Violet, Burgundy Red, Blue Steel | |
| Dimensions | 146.3 x 74.6 x 8.9 mm (5.76 x 2.94 x 0.35 in) | |
| Weight | 149 g (5.26 oz) | |
| SIM | Micro-SIM | |
| Features | LG G3 | other phones |
| Sensors | Accelerometer, gyro, proximity, compass | |