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Hi when somebody calls I can’t hear on my iPhone neither do they; I only can hear when I connect my iPhone to another speaker and sometimes when I put the speaker of the phone not always
As Philippe mentioned above this is a common issue in the 7 series phone that is caused by a fracture under the Audio ic, It will need the audio ic replaced ore reballed and jumper trace repair done. You will need someone that can Microsolder for this work. https://www.youtube.com/watch?v=zjsEsz-T… This is the process.
