https://techcrunch.com/2019/04/02/future-iphones-could-feature-two-way-wireless-charging-and-bigger-batteries/

According to a new report from reliable Apple analyst Ming-Chi Kuo and shared by MacRumors, the next-generation iPhone should likely feature two-way wireless charging. This feature would let you charge other devices using your iPhone.

Other flagship smartphones already feature two-way wireless charging, such as the Samsung Galaxy S10, the Huawei Mate 20 Pro and the Huawei P30 Pro.