Chosen Solution
So with the headphones plugged in to my 7+, if I tap the bottom back of my iPhone with my knuckles my headphones cut out. The headphone controls don’t do anything, and the phone’s up/down toggle adjusts volume not headphones. The ear speaker doesn’t work during a phone call. I have the restart the phone for everything to work correctly. Charging, however is unaffected. Thoughts?
Hmm…I don’t like the idea of tapping the device with your knuckles, the iPhone 7 series phones already have enough issues with bad traces and solder connections as it is. You could try to replace the lightning port by following this guide but if that doesn’t solve your problem, you may have a logic board issue. The Audio IC, which manages all of the microphones and output has some very delicate traces which are prone to cracking. This requires reballing of the Audio IC and strengthening of the weak traces. Obviously this is a micro-soldering repair and is not DIY.
