Greg, your response is obnoxious at best. The typical Apple Fan-Boy response of "If you are unhappy, then please just go return the phone and get your money$$ back and buy something else!" is cute, but of no help to people. I would love to toss my crackly 8Plus in the garbage and change to a Pixel 2 or Galaxy Note but frankly can't given my tens-of-thousands of dollars of investment in the Apple ecosystem. We have 6 iPads, 4 iPhones and a handful of Macs in our home. I have had every iPhone model sold. I went from my 7Plus, which was brilliant, to 8Plus which seems to be a parcel of bugs & issues. The crackling issue is around the primary reason we carry phones, i.e. making calls.
Get off your high horse and don't post if it's not helpful.