Apple has high requirements for the RF specifications for wireless chargers. Maybe even this time, even "inside" a large number of home-made third - party accessories manufacturers who get the real machine to know the wireless charging scheme are also afraid to produce and list third party iPhone wireless chargers. Perhaps apple is also waiting for a bigger technological breakthrough, and then Launch a near perfect wireless charging solution.
It has to be said, in the previous industry, that iPhone X's wireless charging power is only 7.5W, although it is not surprising, but we all know that the latest Qi 1.2 standard can support 15W, 7.5W is exactly one half of the latest technology allowed, and maybe this also the iPhone X is equipped with wireless charge. Electricity is just an attempt to make some "allowance" for future technology and products.