情报来源：
https://tinyurl.com/y4tb9kws
What ChargerLab found specifically was that with the launch of iOS 13.1 many
third-party wireless chargers rated at Apple’s 7.5W maximum wireless
charging speeds were now operating at 5W. As you might expect, this
lengthened wireless charging times substantially. For example, an iPhone 11
running iOS 13 would wirelessly charge to 80% in two hours but after
installing iOS 13.1 it only achieved a charge of 55% in the same time period.
That’s woefully slow.
随着iOS 13.1的发布，原本许多可以达到苹果7.5瓦最大充电效率的无线充电头现在
都只能够以5瓦的功率来充电。
原本iPhone 11在iOS 13两小时可以充到80%，但在iOS 13.1两小时后只能充到55%
The downgrade still exists in iOS 13.1.2 and, despite no official explanation
from Apple, AppleInsider learned from a source within the company that the
change is deliberate. “Any vendors who are fully compliant with the Qi
charging spec and all of our guidance will see 7.5W charging," said their
source.
在iOS 13.1.2中发现问题仍然还在。根据内部消息说这项改变似乎是刻意的。
它们说："所有跟Qi 充电相容的厂商会见到7.5瓦的充电速度"
As an attempt to protect customers, that would seem reasonable but
AppleInsider discovered: “the issue is more complicated. Manufacturers, who
spoke on condition of anonymity, said Apple has yet to give them any specific
direction. Also, that they have discovered being fully compliant with Qi
certification requirements does not appear to guarantee their products will
avoid the 5W cap.”
如果是为了保护消费者，这是合理的。
但事实上，符合Qi 认证的厂商还是只有5瓦的充电速度
And here’s where it gets worrying. ChargerLab’s tests found that all
wireless charging pads sold by Apple Stores still worked at 7.5W. Apple calls
this rate ‘Apple Fast Charging’ but it is actually just part of the Qi
wireless charging standard (which goes up to 15W in rival products) so Apple
shouldn’t be enforcing any sort of certification under its Apple MFi
Program. If that has changed, fast wireless charger prices look set to
increase for iPhone customers.
更神奇的是，所有从苹果店贩卖的充电头都可以用7.5瓦的速度。苹果称这个叫做
"苹果快速充电"，但这只是Qi无线充电的一个标准（其可以达到15瓦的充电速度）
所以苹果不应该用强迫任何符合Qi无线充电的认证用在苹果的MFi认证上。
如果这项改变是真的，那苹果的快充无线充电器价格就上涨了
心得：
保护消费者（X)
保护苹果获利（O）