Hello,
I have been the owner of this phone for a few days.
This morning the loudspeaker of the bells began to crush me unmercifully.
I downloaded the generator to check the frequencies at which this is most apparent.
I have cleared the hollow in the housing behind which the loudspeaker is located, and nothing!
From the stupidity I thought that maybe there was some kind of underpressure in the case, since it was a waterproof phone, and I opened the USB cover for a moment to equalize pressure in your phone - how to take it off!
PS: I do not think that it would be so in the case of the author, but maybe someone will happen to it, and will come to this post.
Greetings!