The upcoming iOS 11.2 update will offer improved wireless charging on all three 2017 iPhones. Currently, the iPhone 8, iPhone 8 Plus, and iPhone X support 5W wireless charging. With the update, that number grows to 7 watts, according to MacRumors.
As noted in the report:
MacRumors received a tip about the new feature from accessory maker RAVpower this evening, and tested the new charging speeds to confirm. Using the Belkin charger that Apple sells, which does support 7.5W charging speeds, the iPhone X was charged from 46 to 66 percent over the course of thirty minutes.
The same iPhone charged from 46 percent to 60 percent over 30 minutes when using a wireless charging accessory that does not offer 7.5W charging speeds. Our testing was intended to emulate real world conditions, with a case on and Airplane Mode not activated.
Obviously, 7.5W is better than 5W. However, it should be noted Apple’s wireless iPhones still do not support the same wireless charging speeds as other Qi-based smartphones. Some of these allow for up to 15W of wireless charging power.
On Monday, Apple released iOS 11.2 beta 3 to developers. The update should be released to the general public in the coming weeks.