Yep, with 144 Antennas synchronized the Chinese Government can do lots of other things instead loading your smartphone... come in and try out - if you want 5W of thermal power directly into your brains... (or testicles if you like it more that way), oh they forgot a safety switch and it could also be 500W? "Ping" - meal is ready,(reply>), Nope, srsly - everybody knows projected sound - but those frequencies are waaaayyyy lower (and the energy involved) - so the energy is distributed over a bigger area ...<br>Now take your microwave, stop the turntable, lay out cheese in it and turn it on for a minute - and you'll see where the initial wavefront and the (inside the "cage" of the microwave-oven) reflected ones interfere and annihilate or multiply the projected power... you'll see a pattern which is mainly dictated by the frequency (c*/frequency=wavelength) - <br>now imagine a microwave-oven in full room-size with 144 small antennas instead of one ... YES - you could maximize the energy input on a specific spot - but what is about all the spots in this 3D-intereference-pattern that are NOT the target and still get hit (in the mw wavelength it's about 5" i guess) with a great portion of the energy... yes, sunlight has more watts/m² than the "announced wattage" and is mostly harmless - unless you bring lenses in..