How do I fix my iPhone when suddenly font is really letge

Hi Sandrbyers01,

Thanks for reaching out to Apple Support Communities.

It sounds like you're having an issue with the font size on your iPhone.

We're happy to assist.

We recommend checking out the steps in the section titled "Adjust the text size when you're using an app" from the article here: Adjust the display and text size on iPhone - Apple Support

1) Open Control Center, then tap .

(If you don’t see , add it to Control Center—go to Settings  > Control Center, then choose Text Size).

2) Drag the slider up or down to increase or decrease the text size.

To change the text size for all apps, tap All Apps at the bottom of the screen.

The reason why we're recommending the steps above is because they directly address the issue you initially posted about: the font on your iPhone has become too large.

If the original problem persists, then try the steps below in reverse order to decrease the font size.

1) Go to Settings  > Accessibility > Display & Text Size.

2) Adjust any of the following:

Larger Text: Turn on Larger Accessibility Sizes, then adjust the text size using the Font Size slider.

This setting adjusts to your preferred text size in apps that support Dynamic Type, such as Settings, Calendar, Contacts, Mail, Messages, and Notes.

Please do not hesitate to contact us if you have questions or need additional support.  

Cheers!