Chosen Solution
Hello. I have an iPhone 6s that was given to me from a relative. When he gave it to me, the loud speaker sounded very, very low. I decided to replace the loud speaker and it still sounds low. I’m starting to think I should replace the dock connector assembly, but I wanted to ask you guys beforehand so I don’t waste any unnecessary money. He has also confirmed that the phone has absolutely NO LIQUID DAMAGE. I hope to get an answer ASAP. Thank you very much for your time.
You could try replacing the dock connector as they are not very expensive. If that doesn’t fix the problem it will be the speaker amp IC on the logic board which would need to be replaced by a reputable repairer.
