If you want to italicize text on your iPhone, there are a few different ways to go about it. The easiest way is to use the keyboard. Just type two tildes (~~) and then the italicized text. Another way is to use the Photos app. Open up the photo you want to italicize, and tap and hold on one of the text boxes (like the title or caption box), and then select “ Italics” from the pop-up menu. And finally, you can also use a third-party app like IOS Text Emoji or Sticker Text. ..