Among the iPhones released by Apple from September 13, 2017 to October 26, 2018, those with wireless charging functions include iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, and iPhone XS. iPhoneXS MAX.
Extended information:
Advantages of wireless charging for mobile phones:
1. Equipment that uses wireless magnetic induction charging can be invisible and has low equipment wear rate. It has a wide range of applications and the public charging area is relatively reduced, but the reduced area share will not be too large.
2. It has high technical content and is easy to operate. It can implement relatively long-distance wireless energy conversion, but the transmission distance of high-power wireless charging is only limited to 5 meters, not too far.
3. Easy to operate.
Disadvantages of mobile phone wireless charging technology:
1. Although the equipment has high technical content, the economic cost of the equipment is high and the maintenance costs are high.
2. Due to the realization of long-distance high-power wireless magnetoelectric conversion, the energy consumption of the equipment is relatively high. As the distance and power of wireless charging equipment increase, the loss of useless power will also increase.
3. The wireless charging technology equipment itself realizes secondary energy conversion, that is, the grid power is stepped down (or directly) into direct current and then performs a higher frequency switch to control the AC conversion output. Since high-power AC-AC current conversion is responsible for secondary wireless transmission of electrical energy, the electromagnetic space magnetic loss rate is too large.
Reference material: Mobile phone wireless charging technology - Baidu Encyclopedia