Mic Problem in Nokia 100, Mic is not working, Low Mic voice to destination,Microphone problem.
Nokia Key T4 and T5 for disassemble.
Electronics Cleaner for cleaning carbon or water damages.
Hot air to dry the mother board.
Solding Iron for applying jumpers.Nokia C2-03 Not Charging Problem jumpers Ways Solutions
Solution & Diagnostics:-
Disassemble the mobile phone and look at the mother board.
If there is some rust or carbon then apply electronics cleaner and clean it.
Apply hot air to make it dry and test again.
Try with replacing mic with new one.
Check microphone point on the mother board and if value did not exist.
Different color lines are given to indicate whole track and paths of mic ( microphone ) function in Nokia 100.
Check all points that are described in above diagram and if any track
out of them is missing apply jumpers as shown in above diagram for
solving mic problem in Nokia 100.
You may have to change audio IC.
Warnings & Tips:-
Do not apply much heat with hot air it can be harm for your skin.
Apply jumpers carefully so that it would not be short with other.
After cleaning with cleaner make it dry proper.
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