A fresh rumor suggests that Apple could be adding Pencil support to its 2018 iPhones. The addition would give the iPhone the direct ability to compete with the just-launched Galaxy Note range, in addition to differentiating it from the Galaxy S 10.
https://www.notebookcheck.net/Apple-again-rumored-to-be-adding-Pencil-support-to-2018-iPhones.323438.0.html