https://www.cnet.com/news/2019-iphones-could-get-a-battery-upgrade-wireless-charging-5g/

The report also mentioned that Apple would increase the size of the battery in the 2019 iPhones, which we hope would translate into longer battery life.

And that might be one of the most exciting upgrades to look forward to in the 2019 iPhone, because they're rumored to be very similar to the 2018 lineup. Previous rumors have suggested Apple will stick with the same three models and the same general design, dimensions and displays as the XS, XS Max and XR.