Microphone replacement in Samsung Note 2 First do the disassembly of mobile Take out the board on which Microphone is attached Fix the board on PCB stand Apply Soldering paste on microphone Apply hot air and take out the mic using tweezer Un wrap the new microhpne Heat the joints of mic using soldering machine Place it back at mic jack Heat it by hot air gun.

Mic is attached firmly Attached the board to mobile Assemble the mobile Comment below for any query.

Source: Youtube