The phone could use a transmitter with circular geometry - a wire loop, for instance. It could be part of the case; I assume the magnetic field is unaffected by human touch, unlike the iPhone 4&#x27;s antenna infamously did: <a href="http:&#x2F;&#x2F;www.wired.com&#x2F;2010&#x2F;06&#x2F;iphone-4-loses-reception-when-antenna-band-is-touched-firmware-issue&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.wired.com&#x2F;2010&#x2F;06&#x2F;iphone-4-loses-reception-when-a...</a>