The LG G4 is a high-performance smartphone featuring a 5.5-inch Quad HD IPS Quantum Display, Qualcomm Snapdragon 808 processor, 16MP rear camera with f/1.8 aperture and OIS, 8MP front camera, 3GB RAM, 32GB storage with microSD expansion, removable 3000mAh battery, and Android 5.1 Lollipop. This manual provides detailed information about replacement parts, disassembly procedures, and component specifications.
Key components: Display assembly, main logic board, camera modules, battery, charging port, buttons, speakers, and housing.
| Component | Part Number | Description |
|---|---|---|
| Display Assembly | LG-E988-LCD-01 | 5.5-inch Quad HD IPS Quantum Display with digitizer |
| Main Board | LG-G4-MB-32GB | Motherboard with Snapdragon 808 and 32GB storage |
| Rear Camera | LG-G4-CAM-16MP | 16MP with OIS, laser autofocus, f/1.8 aperture |
| Front Camera | LG-G4-FCAM-8MP | 8MP front-facing camera |
| Battery | BL-51YF | 3000mAh removable lithium-ion battery |
| Charging Port | LG-G4-USB-01 | Micro-USB 2.0 port with quick charge |
| Power Button | LG-G4-PWR-01 | Rear-mounted power button with fingerprint sensor |
| Volume Buttons | LG-G4-VOL-01 | Rear-mounted volume rocker |
| Speaker | LG-G4-SPK-01 | Bottom-mounted speaker |
| Housing | LG-G4-CASE-01 | Plastic body with leather options |
The display assembly includes the LCD, digitizer, and front glass fused together.
WARNING! Display replacement requires complete assembly replacement; individual components cannot be separated.
Dual camera system with advanced imaging capabilities.
CAUTION! Camera modules are sensitive to static electricity; use ESD protection during handling.
Central processing unit and supporting components.
Processor: Qualcomm Snapdragon 808 hexa-core (2x1.8GHz + 4x1.4GHz)
Memory: 3GB LPDDR3 RAM, 32GB eMMC storage
Connectivity: Qualcomm WTR3925 RF transceiver, WCN3680 WiFi/Bluetooth, PM8994 power management
Graphics: Adreno 418 GPU
Wireless and wired connectivity components.
Tip: Antenna cables are delicate; handle with care during disassembly.
Physical controls and connection interfaces.
WARNING! Rear buttons are part of a single flex cable assembly.
External casing and structural components.
Materials: Plastic frame with optional genuine leather, ceramic, or plastic backs
Colors: Metallic Gray, Ceramic White, Shiny Gold, Genuine Leather Black/Brown/Red
Dimensions: 148.9 x 76.1 x 6.3-9.8mm
Weight: 155g
Essential tools for disassembly and repair.
CAUTION! Use proper tools to avoid damage to components.
Step-by-step part replacement guidelines.
| Component | Difficulty | Time Required | Special Notes |
|---|---|---|---|
| Battery | Easy | 5 minutes | Removable back cover |
| Display | Difficult | 45-60 minutes | Full assembly replacement |
| Rear Camera | Moderate | 20-30 minutes | Remove back cover and main board shield |
| Charging Port | Moderate | 30 minutes | Requires main board removal |
| Power Button | Difficult | 40 minutes | Integrated fingerprint sensor calibration needed |
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Display not working | Damaged LCD or connector | Replace display assembly; check flex cable connection |
| Camera not focusing | Laser AF module failure | Replace rear camera module |
| Battery draining fast | Old battery or power management | Replace battery; check for software issues |
| No charging | Faulty charging port or board | Replace charging port flex cable |
| Fingerprint not working | Power button assembly failure | Replace rear button flex cable |
Reset: Power + Volume Down for 10 seconds if software-related.
Service: Contact LG Support or authorized service centers for genuine parts.