SoftBank 810T User Manual page 76

Lower Case (a, っ etc.)
In all the input modes except Numeric, you can change the case of a
character selected by the cursor (unconverted character) (compatible
characters only).
Example: Changing to lower case
あ
3
1
In a text entry window, press 1
is entered.
あ
2
Press #→@
ぁ is determined.
3-4
Adding ゛ or ゜
In kanji (hiragana) entry mode and single-byte katakana entry mode, you can
add " ゛ " (dakuten) and " ゜ " (handakuten) to a character selected by the
cursor (unconverted character) (compatible characters only).
Example: Entering
が
1
In a text entry window, press 2
is entered.
か
2
Press *→@
が is determined.
With characters like to which both " ゛ " (dakuten) and
● は
" ゜ " (handakuten) can be added, you can switch between " ゛ "
and " ゜ " by pressing * .
Tip
When the cursor is on a character to which " ゛ " (dakuten) and
7
" ゜ " (handakuten) cannot be added, or when the cursor is to the
right of a character (unconverted), you can enter " ー " (cho-on), "、"
(touten) and "。" (kuten) by pressing
* . /