This is a default text size unless you changed.
Let’s make it larger for people who can’t see it well!
Settings – Tap “General” 
Tap “Accessibility“
Tap “Larger Text“
Drag the slider to the right. 
*You will see the text size changing while moving the slider and stop it when the size is perfect for you.
Well Done!
Text size is bigger now.
Let’s try to make it even bigger!
Go back to “Larger Text” and switch on
“Larger Accessibility Sizes” 
and move the slider to the right.
*Settings – Accessibility – Larger Text
Well Done!
This is the biggest text you can get.