Blackberry Pearl 8110 - Manual (Page 125)

Custom address book field data is not appearing on my computer
You can only synchronise the data in a custom address book field with a text field in the email application on your computer. For example,
you cannot add a contact's birthday to a custom address book field on your BlackBerry® device and synchronise it with the email application
on your computer because the birthday field is a date field in the email application on your computer.
Some characters in calendar entries do not appear correctly after synchronisation
If you schedule appointments or meetings on your BlackBerry® device that contain special characters or accents, your computer might
not support these characters.
On your computer, check that you are using the correct default code page and that the correct font support is installed on your computer.
For more information, see the documentation for the operating system on your computer.
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