There's a consumer protection law here (in the UK, though I'm sure the US and many other countries have similar laws) which states that items sold have to be fit for purpose. A phone that can't get a signal without an accessory isn't fit for purpose. Ergo, unless Apple fix the problem which they're currently pretending dosen't exist, they're going to find themselves in trouble - they may even be forced to recall the affected products. Telling customers to hold it different or buy a case won't do. Point is, even if Apple denies it's an issue, disagreeing regulations could still force them to sort things out.