Nokia 3120c classic - hardware repair solutions

Hardware problem repair manuals for  hardware failures on Nokia 3120c.
This repair solutions covers the following problems below;

LCD display problem - no display, blue display, white screen display.
Buzzer / ringer problem - no ringtone audio sound can be heard
charging problem - shows no charging response when charger is plug-in, fake charging, it shows  charger not supported

Hang/ restart problem - hang or frozen on nokia logo only, often restarted.
Insert SIM card problem - unable to detect sim card when inserted, shows Insert simcard on display.
Keypad problem - keys not working, keypad malfunction, the keys stop responding.
Local mode / test mode problem - showing only test mode or local  display.
Dead Set problem - unable to power up the device
Network Signal problem - No network signal, low signal, unable to send and receive call and text message.
camera problem - camera hang, camera hardware failure.
just download it, and enjoy fixing Nokia 3120c mobile phones