Problem: Nokia 1680c mic not working problem, mic point on circuit damage proble,
Solution:- Mic problem in nokia is not big issue, we can solve this problem by follow the simple method.
First confirm that mic hole on mobile casing not close, then disassemble mobile and replace mic with new one.
If mic gives continuity then check circuit and check mic points on motherboard, if any point damage then apply jumpers like diagram below diagram.
Fix 1680 classic microphone problem with help of diagram easy solution
Fix 1680 classic microphone problem with help of diagram easy solution 

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