Low call volume. Iphone 7

Over time, your speaker will gather dirt and dust in it, in effect, causing the volume to be low or muffled. Try cleaning it with a damp cloth. If this doesn’t work, I suggest contacting Apple and they will clean it out for you.

Good luck!

Hi,

maybe it"s need to clean from dust you can send it to apple store of you can you wet wipes and clean earbase