Since October of last year, I've been exchanging and complaining regularly with Apple support. The device was exchanged several times, my contact person was changed several times and many hours of my lifetime were wasted. Now my support case will be closed because Apple has no further idea what can be done. The technical department informs that it can't be a hardware defect, because the device has already been replaced twice. It is assumed that the noise is caused by the surrounding conditions (house, region, network coverage).
Of course, this statement is complete nonsense, because with an iPhone 7 and the same SIM card there are no problems at all. Apple simply blames the problem on the situation at the customer's premises. No insight that there may be a software problem here that occurs at the customer due to various factors.
I am extremely disappointed by the way Apple deals with customer problems and at the same time horrified by the arrogance with which they do it.
I can only hope that the problem will soon be solved with a software update. To be honest, after 7 months I am sick and tired of dealing with the support. I hope that someone else will have more success with the customer support.