The update will increase wireless charging power from 5 watts to 7.5 watts.
The latest release of iOS 11, iOS 11.2, has brought faster charging to the iPhone 8, iPhone 8 Plus, and iPhone X using Qi-charging accessories.
Using iOS 11.1.1, which was rolled out to fix problems with typing an i, the iPhones only supported 5 watts of charging power. However, the most recent update, which is currently being tested by select developers and other beta testers, will apparently support 7.5 watts, make charging faster if you want to use wireless charging accessories.
There has been no official announcement by Apple regarding this new capability, save an earlier promise to increase charging capabilities “at a later date”. According to MacRumours, however, it received the tip-off from RAVPower, a company that makes accessories supporting the wireless charging standard for the new iPhone range. The website confirmed that after testing the update with 7.5 watt accessories indeed, it was faster when using an accessory that supports 7.5 watts charging speeds, topping up a device from 46% to 66% in 30 minutes, compared to 60% in 30 minutes when using a 5 watt accessory.
The website explained that it had tested the devices using “real world” conditions with a case on the device and Airplane Mode not activated.
However, it’s important to note the iPhones’ charging speed is still slower than many of the other Qi-charging-enabled devices, which often support speeds of up to 15 watts.