Reverse wireless charging is a feature that allows you to charge other wireless charging devices, including other smartphones, from the back of a smartphone. It was first seen on the Huawei Mate 20 Pro smartphone and, more recently, on Samsung’s new Galaxy S10 devices.
Reverse wireless charging can be useful for recharging battery life in devices that also support wireless charging. In Samsung’s Galaxy S10, the most useful use case that comes to mind for reverse wireless charging is charging your Galaxy Buds wireless headphones. Similarly, reverse wireless charging on an iPhone could be used to charge the new Apple Wireless Charging AirPods that it introduced this week.
Mac Otakara has a decent track record with Apple’s rumors, and is backed by Apple’s prolific analyst Ming-Chi Kuo, who reported in February that Apple’s upcoming 2019 iPhones will come with reverse wireless charging. That said, any rumor about the upcoming iPhone 2019 is just that: a rumor. Nothing is certain until Apple announces the functions on its iPhone 2019, which we expect to be announced in September, when Apple normally announces new iPhones.