The microphones have +/-3dB variance in sensitivity. Obviously most will be near the centre point but do Apple calibrate this out in some sort of sound chamber ? It's not something anyone would notice in normal use.I’ve seen one of the iPhone sound level apps claim that they’ve calibrated their app with each model of phone. This supposedly makes it accurate. Would that be possible or is it just marketing?
Then add all the dried on spit and daily muck which it's almost impossible to clear out and you've got a wide frequency and sensitivity variance.
Statistics: Posted by MikeDB — Sat Feb 07, 2026 9:22 am