Samsung Gear S2 classic User Manual page 36

Basics
Using the keyboard
A key has three or four characters. To enter a character, tap the corresponding key repeatedly
until the desired character displays.
Changing the input mode
Rotate the bezel to change the input mode. You can switch between character mode, number
mode, and punctuation mode.
Changing the input language
Slide the space key left or right.
To add more languages, switch to number mode or punctuation mode. Then, tap
Settings → Select input languages and select a language to add. You can use up to two
languages.
Delete a preceding character.
Enter uppercase. For all caps,
tap it twice.
Enter a space.
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