Chosen Solution
Hi there, as title says, my iPhone 7 earpiece sounds distorted, so i replaced it, but the problem is still there. Are there more parts included which could be replaced? Cheers Jan
Have you tried the other microphones and loudspeaker to see if they appear to work well? The problem may reside in the actual flex cable. You can replace it by following this guide. However, if this doesn’t solve your problem, then the issue could be logic board related. The iPhone 7 series of devices suffers from issues with the Audio IC and weak traces on the pcb which crack and break. It is a similar design flaw to the iPhone 6 Plus, known as Touch Disease.
