How to change your iPhone’s text size for a specific app
Sometimes you want the text in your app to be smaller, so you can fit more content on a single screen. Sometimes you want it to be bigger, especially if you’ve been putting off buying those reading glasses. But until recently, if you had an iPhone, you had to pick a single text size as a standard for all your apps.
Not anymore. In iOS 15, you can adjust the text size separately for each of your apps. So you can, for example, keep the text small for your email, but make it a bit larger in Twitter — or vice versa. (Thanks to @OmarShahine for the info.)
One of the best hidden new iOS 15 features is per app font sizes. I like to use the smallest dynamic size system wide but bump up Outlook by one side since I read so much email. p…