another suggestive post that it's all location
https://forums.macrumors.com/posts/10348488/
https://forums.macrumors.com/posts/10348488/
Very accurate statement. My wife and I are in the process of moving right now. At our current place, our bars drop. On the other side of town, where we are moving to, I tried to replicate the problem and couldn't. So, I guess if we bought these exact same phones 3 weeks later, we could've said that our phones were not defective.