I agree there are drawbacks to stainless and that it would be difficult to design a cellphone or other RF device entirely or predominantly from it. However, th

I agree there are drawbacks to stainless and that it would be difficult to design a cellphone or other RF device entirely or predominantly from it. However, the patent does show that they have gone so far as to research and patent a process for improving a material for use in their portable devices. This makes the apparent lack of care in choosing the anodized aluminum for the iPhone 5 surprising and disappointing.