Using The Touchscreen; The Onscreen Keyboard; Text Assistance - Acer Liquid S100 User Manual

Using the touchscreen

Your smartphone uses a touchscreen for selecting items and
entering information. Use your finger to tap the screen.
Tap: Touch the screen once to open items and select options.
Drag: Hold your finger on the screen and drag across the
screen to select text and images.
Tap and hold: Tap and hold an item to see a list of actions
available for that item. On the pop-up menu that appears, tap
the action you want to perform.
Scroll: To scroll up or down the screen, simply drag your finger
up or down the screen in the direction that you want to scroll.

The onscreen keyboard

When you tap a text box to enter
text, the onscreen keyboard will
automatically display.

Text assistance

You can enable various features that
assist you to enter correct text. Tap Menu > Settings > Locale &
Text > Android keyboard. From here you can enable or disable
the following:
Function
Quick fixes
Show suggestions
Auto-complete
18
Description
Corrects commonly typed mistakes.
Shows suggested words while you are typing.
Inserts the suggested word whenever you tap space
or a punctuation mark.