The relevant information is as follows:
1. Apple's latest patent "Dual-band antenna wireless charging and communication system" has been approved by the US Patent Office. Core content: use WIFI to charge mobile phones and tablets. This means that perhaps the iPhone8 needs neither a cradle nor a data cable to charge. As long as there is a WIFI router, users can charge anywhere.
2. The release time of Phone 8 confirms that iPhone 8 supports WiFi charging. The US Patent and Trademark Office document released on Thursday local time shows that Apple is experimenting with long-distance wireless charging technology, and users can use WiFi routers to charge the iPhone in the future.
3. Take Apple Watch inductive charging hardware as an example. Can only be used for charging-wireless communication is not supported, and the working distance is very short. Apple has been trying to increase the range of wireless charging technology. Adding wireless charging function to the existing communication frequency is not a new idea. Some progress has been made in previous research. For example, it is said that smaller devices only need WiFi signals to supply power and charge, but it has not yet entered the practical stage. Companies that develop wireless charging mainly rely on high-power inductive components, but the transmission efficiency is low.
Unfortunately, Apple's patent application only mentioned the theory of wireless charging using the existing communication frequency, and did not involve specific details. The spy photos of iPhone 8 leaked earlier this week show that there seems to be a huge wireless charging pad on the back of the phone. Interestingly, it seems to be similar to the patch antenna described in this patent application. It is widely expected that the flagship iPhone released this year will adopt some form of wireless charging technology, but a wireless charging solution based on communication frequency similar to that described in this patent application is not considered by Apple this year. I hope this technology can be realized.