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Hi My iPhone 7 plus fell on the ground yesterday while I was recording a video, after this the video started to give a buzz sound at first and then and it records videos but with no sound after that I’m not able to record any voice notes, or even call I tried to use earphones but the phone doesn’t recognise it even a wireless one the phone recognised it but doesn’t record or call Also so many things are messed up in the software and the phone is acting strange ex: sometimes doesn’t press on video record button, instagram bugs sometimes doesn’t save the story etc I just need to know if it is a mic issue or a software issue Is it possible that falling on the ground causes software issue ? And if its a mic issue why still not working with a wireless headphones

First thing I would do if you have not already is restart your phone. Software problems generally don’t appear after a drop, unless it caused power to become disconnected when the system was making a change to something in storage. I will note, the iPhone 7 and 7+ have a known and well documented issue regarding the Audio IC (the chip on the board which handles audio functions). There are a few connections under that chip which tend to become loose or disconnected altogether, generally due to flexion of the device/board. But a good hard drop could definitely make this worse. It’s not a super typical presentation of this. Typically bluetooth headphones would still function with that issue, but I wouldn’t entirely rule it out as a factor.