Apple is reportedly leaving the charger out of the box for the next iPhone.

You might not find much in the box for this year’s iPhone besides the handset itself. Historically trustworthy analyst Ming-Chi Kuo claims in a research note that 2020 iPhone models not only won’t include the usual wired earbuds, but won’t include the power adapter either — you may just get a charging cable. There would be a more powerful 20W charger (versus the 18W for the iPhone 11 Pro), but you’d have to buy it after the fact.
Barclays analysts also believed Apple would no longer bundle a charger.