This enables the user to have a more customized appearance and it can potentially help some.
What is normal text size on iphone. Drag the slider to select the font size you want. Now each font is different even at the same size but were talking. This text size setting is persistent too.
To return to the full-size keyboard just tap the arrow to expand it again. Since iMessage sends messages over the Internet it can send a wider range of different kinds of data. Tap Larger Text for larger font options.
When the iPhone is placed in a standard view setting the icons are normal size and the text remains the same. Open the Settings app on your iPhone. You can also make all of your iPhones text bold to improve readability from this area of the menu.
Go back to your settings and adjust the font size as needed. Send more stuff over iMessage. Verify that your design can scale and that both text and glyphs are legible at all font sizes.
Making the text too large might make it hard to tap buttons or other functions within apps. Printing with Apple AirPrint. Tap Larger Text for larger font options.
Its in the third group of options on this pageStep 3 Select Text Size. Open Settings à Display Brightness then select Text Size. How To Change Font Size On An iPhone In The Settings App.