Hi,
You mean to say,that you changed the font size settings to maximum that is 12 but still it stays to 5.It is not changing from 5 to 12.
Then its the problem with the firmware.Just go for reset the phone.
Note: Your device will be set back to factory default settings.Phone contacts and phone memory data's will be erased.
To perform a hard reset
1. Pull out the stylus.
2. With the device turned on, press and hold the VOLUME DOWN and
ENTER buttons, then press the RESET button with the stylus tip.
3. Release the RESET button, but continue pressing the VOLUME DOWN and ENTER buttons until you see this message on the screen:
4. Release the VOLUME DOWN and ENTER buttons, then press the
VOLUME UP button to perform the hard reset, or press any other
button to cancel the reset.
post a comment for further assistance.
Thank you for using
fixya have a nice day:-)