Chosen Solution

Hi All, I changed the earspeaker of my iPhone 6, because the sound was very low and can’t hear the others. After the earspeaker replacement, the sound became noisy and crackling. Do you have any ideas, what is the problem? Maybe the new earspeaker is wrong? Thank you for your reply!

Most likely some debris or something other that is impeding proper conduction on the connector

Sorry for the late reply, I could do the assembly just now. I assemblied the iPhone and cleaned the earspeaker connector, but the earspeaker remained the same, noisy and crackling. Do you have any other idea what’s wrong? Thanks in advance!