Since Apple's iPhone8/X was released last year, the wireless charging pad market has been a blowout. There is a view that when the user is used, the wireless charger will be the same as the WiFi, and it will be a user's need.

However, there are many wireless charging schemes on the market at present, and each has their own advantages and disadvantages. In addition, WPC recently released the latest Qi standard for v1.2.4 on its official website. In this context, which wireless charging scheme will eventually win?

Apple 7.5W wireless charging has been a mysterious and high-end existence. Although the current Qi wireless charging has been able to easily achieve 10W and 15W, apple 7.5W Qi wireless charging is all the time it is trying to attack. The main reason is that the wireless charging of apple 7.5W is a fixed frequency scheme that allows wireless charging to minimize the interference of the mobile phone.

Because of the technical barriers, the 7.5W wireless charging of apple, to some extent, represents the overall strength of the company, and the products are sold for a higher price. As far as the user experience is concerned, 7.5W is not as slow as 5W charging or 15W charging, and most Apple users who have no poor money will naturally choose 7.5W Qi wireless charging. But they don't know that most of the 7.5W wireless chargers that have been searched through Taobao do not support apple 7.5W. Obviously, smart businesses are better at playing word games. For 10W or 15W power wireless charger, they can not face the red heart, do not jump on the label, "support 7.5W wireless charging pad", and you can't pick out any problems.

Recently, WPC has released the latest version of v1.2.4 Qi standard on its website, this agreement will be enforced on March 8, 2018, which means that the wireless charging product certification on March 8, 2018, after Qi v1.2.3 will no longer apply, but according to Qi v1.2.4 standard certification.

With respect to Apple 7.5W transmitter authentication, compared to Qi v1.2.3, Qi v1.2.4 has the following updates:

1. the TX type MP-A11 is formally incorporated into the Qi standard at Qi v1.2.4. 2., under the version of Qi v1.2.3, the transmitter passed BPP+FOD Extensions authentication, while the newly released Qi v1.2.4 simplifies the authentication level of the transmitter, and it will be certified by EPP (MP-A11).

To sum up, after the new protocol is enforced, the type of Qi authentication that apple 7.5W launches need is EPP (MP-A11).

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