Common speaker and microphone problems on the iPhone 7 and 7+
We all know at least one person that has had an iPhone 7 or 7 Plus, and has lost the ability to use the microphone, speakerphone, record audio on videos or may never get past the apple logo on a restart. All these issues are a symptom of the audio
The Audio IC problem
At Cell Phone City we have seen hundreds of people with these issues. Some of them were able to get their phones replaced by Apple. Most of those that are able to get replacements are either under the 1-year warranty or pay a fee to Apple for the replacement. From our experience, Apple customer-care, generally, “plays dumb” to the existence of the problem and/or blames it on user error. We suggest you call Apple and do your best to get a replacement from them. In our opinion, these issues are almost certainly a result of a manufacturing method that is not as good as it needs to be.
This kind of “IC” or circuit board related problems require a very skilled micro soldering