1. Tap the field.
2. Do one of the following:
Enter only digits (1),
uppercase (A) characters,
lowercase (a) characters, or
alphanumeric (2aB)
characters.
Press a keypad key one or more times (depending
what input mode you’re in) to enter the characters
that is displayed on the keypad key.
You can tap or abc one or more times to
switch among uppercase (ABC), numeric (123),
alphanumeric (2aB), uppercase and lowercase
(Abc) and lowercase (abc) input modes.
For example, if the input mode is ABC: