I don’t own an iPhone, never have, and probably never will. When it comes to this antenna issue I can’t say that I know what iPhone owners who have the issue are going through. Wait a minute! Yes I can!
You see I own a cell phone and the last two phones I have owned have had stickers on them clearly stating if the phone is held in “this specific place” reception could drop. In fact it did drop and I lost calls every time I held the phone in that spot. On my previous phone I had to train myself not to hold the phone a specific way than I was used to holding it.
I didn’t get a free case for either phone, I didn’t even get an apology from the company. I didn’t return the phones either. I kept them because I liked them and I learned to deal with it.