My original one from 1982 is still working.
This should make it much easier for car jackers, robbers at traffic lights, etc to attack their victoms.
I presume they have blocked it from youtube then.
So he claims 10% at 10 feet - so lets assume 10 watts input power
A 10 foot sphere has a surface area of 1257 sqft
1 watt over 1257 sqft is 0.0008 watts per sqft
Lets be generous and assume the whole of the phone case is a receiver.
A phone is about 10 inches sq, so a bit under 1/14th of a sqft.
0.0008/14 = 0.000057 watts. That isn't going to be much power for your phone.
That also assumes you left your phone facing the transmitter rather than edge on.