Lenovo A2107A - Manual (Page 12)

Virtual keyboard
Tap on the bottom left bar to hide the virtual keyboard. Tap the text
input box to display the virtual keyboard.
Switch Input Method
Tap / to toggle letters and numbers.
Tap to enter a capital letter. Or tap and hold until
it changes into to turn caps lock on. Tap it again to unlock.
To input a symbol, tap and hold the key until a blue pop-up box appears,
then drag your finger to the symbol you want.
In number input mode, tap to input symbols and special
characters. Tap to go back to number input mode.
Input Options
Tap to open the Input options menu. You can select Input
languages or Android keyboard settings in this menu.
*Specific models only
Chapter 02: Connecting to the Internet