Cell phone repair procedures
Free experience zone
2022 Mobile phone repair course
Tool and theory
- Manual operation
- circuit principle
- Basics circuit principle
- The basis for the use of manual hands-on tools for
Mobile Phone Fault Classification
- Functional diagrams of mobile phones and tablet co
- Fingerprint home button Face ID (volume key return
- Short circuit electric leakage (abnormal current)
- USB online and charging circuit failure
- unable to boot and auto boot
- No IMEI-Baseband-free null serial number
- Backlight (Light) Circuit Failur
- Display Circuit Fault (including Display Circuit)
- Touch Circuit Fault (including Touch Screen Circui
- wifi BT Bluetooth Wireless Network Circuit failure
- NFC and unactivated failure
- SIM card read exception
- Ring tone sound horn vibration circuit fault
- Microphone circuit failure
- Handset Receiver circuit failure
- Earphone circuit failure
- Camera Circuit Fault
- 2G3G4G5G. No service, no signal, abnormal signal.
- Flash and flashlight circuit failure
- Fault of photosensitive distance sensing (sensor s
- Fault of GPS Circuit of Compass Gyro
- TF SD Card read exception
- UI stutters/lags/Run difficulties turn on slowly
- Boot stuck automatically restart, crash
- Sleep state, unable to wake up, fault case
- Battery has no data
- (battery is not durable)Short standby time for po
- Prompt temperature is too high or too low
- Broken wire under screw column
- NAND Disk memory expansion
- iTunes brusher error （update error）
- Unlock ID （iphone/ipad）
- Other Fault Summary （phone-tablet）
- Software related (9008 unlock ISP, etc.)
- Previous failure cases