Loud static noise from bottom microphone when recording or calling
One week ago I replaced my Lightning connector because the older one wasn't charging anymore. After I reassembled everything and turned on my iPhone I found that when sending vocal messages on Whatsapp, recording on Vocals memo a static noise is present, sometimes it gets louder and sometimes it is almost imperceptible. Not only, I found that during calls the receiver hears a strange noise, like the one made by jackhammers. After that, I tried 3 new connectors bought from different shops online, but I had the same problem every time and I still have the same problem.
I found out when calling with Wi-Fi only (cellular data off) the jackhammer noise doesn't exist, confirmed by the receiver, but a loud whistle is heard by both at the start of the call.
Can someone help me to find out what's happening?
This problem is haunting me.
Thanks in advance,
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