No, Apple Pencil is not compatible with iPhone. Apple Pencil is designed exclusively for iPad models that support it, while iPhones use a different touch interface technology. Apple Pencils (including the 1st generation, 2nd generation, and Pro models) require the pressure-sensitive display technology found in compatible iPads, which iPhones do not have. iPhones rely on capacitive touch screens designed for finger input, and while they can register stylus input from third-party styluses, they are not compatible with any Apple Pencil model. If you want to use a stylus with an iPhone, you would need to purchase a third-party option specifically designed for iPhone compatibility. However, if you have an Apple Pencil and want to use it with Apple's devices, pairing it with a compatible iPad is the intended use case. The devices that support Apple Pencil are specific iPad models, including iPad Pro (all sizes), iPad Air, iPad (standard models from the 5th generation onward), and iPad mini.