Steps to change the Font Size 1 . Go to setting (Touch to slide the screen from Left to Right ) 2. Slide the screen up . 3 . Go to Manage Theme , Where you can Create , Manage and Update the Themes . 4 . Then touch Update Theme 5 . Select the theme Which you want to update or The theme which is in use 6 . After that select Text Size and Then you can change the text size by moving the numeric by up or down as per your need .