This choice between wireless charging standards has nothing to do with what performs best or the costs of implementing the standard. It has everything to do with the commercial possibilities of PMA charging. There is money to be made.
The next version of PMA charging adds what is called a digital layer. This will enable messages, ads, to be sent to the phone. You see where this could go it they have these set up in airports, stadiums, restaurants, gyms and coffee shops. There is always money in advertising.
You still need a bulky cover for PMA until they start bulding them into phones.
This is just what I found after searching a while.
The next version of PMA charging adds what is called a digital layer. This will enable messages, ads, to be sent to the phone. You see where this could go it they have these set up in airports, stadiums, restaurants, gyms and coffee shops. There is always money in advertising.
You still need a bulky cover for PMA until they start bulding them into phones.
This is just what I found after searching a while.