How do you change the font size on a and AT&T ZTE model number 7222 flip phone

SOURCE: HTC Touch Pro

Yes this is a problem with many people I have come across. Even on the highest setting, the font isn't as big as it was on the Mogul or Tilt devices. To set it to the highest setting, you can go to Settings-->Screen-->Text Size==> Adjust as needed.

SOURCE: Increase font size on Nokia E65 Mobile Phone

NOKIA SAYS THAT THE FONTS ARE NOT CHANGAABLE THEY ARE WRONG!
There is quite a simple way to change system fonts in the Nokia E65 phone.
The following is how I did it in my E65.
First you have to select the memory as phone NOT the memory card.
Then connect the phone to PC through the standard USB cable. When the phone prompts you, select “Data Transfer” NOT PC Suite”. Once the phone is connected you can view it as a removable drive. First check if a directory named “Fonts” exists.
If it does not exist, just create it in the resources folder. If it already exists, just make a backup copy of it.
Now, go to your PC Fonts directory (usually c:\Windows\Fonts) and do the following:
You can use any TT font I used a font called Baveuse.TTF as the bold I used the Baveuse3D.TTF as my normal font. You have to have (3) three fonts and they have to be renamed to what is below or it won’t work.
Copy Any (True Type you want) font file to:\resources\Fonts\NSSB60.ttf
Copy Any Bold (True Type) font file to:\resources\Fonts\NOSNR60.ttf
Copy again the same normal Bold (TT) font file to:\resources\Fonts\NSTSB60.ttf
The (3) Three fonts have to be renamed as above or they wont work!!!
Then just disconnect the phone from USB turn it off. Then restart your phone and put the memory back to the card and you will have the new fonts in place. This is how I did my E65 and it worked ok for me. If the fonts are to big just start over delete the three fonts and use a different font to you find one you like I like the Baveuse.TTF font its personal choice.

SOURCE: Tocco Lite - received text messages font size to small

When you're reading the text, use the volume button on the left of the phone to increase or decrease the font size.

Testimonial: "Excellent, so simple. thanks."

SOURCE: how do you change the font size on the Samsung Comeback

Use the scroll/volume bar on the left hand side WHILE IN a message.

SOURCE: Changing font size on Samsung Jet

I couldnt change mine in the options menu as jeckyb said, i just opened the message and you can control the font size with the volume button on the side of the phone! Found that out by mistake :) hope it helps