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Android phone repair basics
Functional chip identification
Standby circuit
Trigger circuit
Power on circuit
Display circuit
Touch circuit
Electric leakage maintenance
WiFi circuit
Camera circuit
Charging circuit
Baseband circuit
SIM card troubleshooting
2G signal troubleshooting
4G signal troubleshooting
5G signal troubleshooting
Microphone troubleshooting
Speaker troubleshooting
Handset troubleshooting
Font library repairing
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