Can you use a stylus pen for the iPhone?

Yes, you can use a stylus pen with an iPhone, but it won't work the same way as on a device with active stylus technology like a iPad. iPhones don't have pressure sensitivity or palm rejection built-in. Therefore, a stylus will primarily function as a more precise finger.

You can use a capacitive stylus, which essentially acts as a more accurate fingertip. These styluses don't require Bluetooth or any special connection; they simply improve accuracy and reduce smudging.

ただし、iPadやアクティブなスタイラステクノロジーを備えた他のタブレット向けに設計されたスタイラスによくある、圧力感度、傾斜検出、ヤシなどの機能などの機能を期待しないでください。