Input modes and navigation
Press any key on the alphanumeric keypad or pick up handset to open the “Enter Number” screen. The current input mode is indicated in the line underneath the cursor line. Press the left function key underneath the display to switch to the input mode indicated by the symbol directly above it in the function key line.
Entering numerals, letters, special characters, and symbols
When entering letters and special characters, pause briefly after each character until the cursor moves forward. Pausing is not necessary when entering numerals.
Numerals. In numeral mode, press the respective number key to type the number printed on the key.
Letters. When in input modes small and capital letters, press the alphanumeric key with the respective letter one, two, three, or four times quickly to type the first, second, third, or fourth letter printed on the key. Pause briefly after each letter.
Example: Insmalllettermode,pressthe“2”keyoncetotypean“a”,twicetotypea“b”, and three times to type a “c”.
Letters with accents and umlauts. When in input modes small and capital letters, press the alphanumeric key with the basic form of the respective letter as many times as necessary. Pause briefly after each letter. Available letters with accents and umlauts depend on the phone's language setting.
Example: If the phone language is German, press key “2” four times to type “ä”.
(Taken from Page 24 of the user manual)