Nokia 6101, text size problem- advice needed

Hi all,
Bought my mother a nokia 6101 for christmas, problem is that in the option where you change the text(font) size for messages it only gives one option which is medium, which is a bit small for her, is this a fault with the phone as the manual says there should be 3 options here,
is there anything I could do with it, shoul I bring it to a service centre for a firmware update (will that do anything)
Its a nokia 6101 (vodaphone)
firmware version is v04.10 rm-76
has anyone else got this phone and could check what options are available on their's (its in messages - message settings - other settings) and what firmware version they have *#0000#