Wiko VIEW4 Guide De L'utilisateur page 7

~ The buttons on your phone
Button
On/Off
Home
Overview
Return
Volume
Function
Press and hold the button to turn the phone on or off.
Press the button lightly to lock the touch screen.
Returns to the home screen.
Opens the list of recent applications.
Returns to the previous screen. Closes the onscreen keyboard.
Increases or decreases the call volume, the ringtone, music, games
and other audio functions.
Switch the ringtone to silent mode when the phone rings.
Press and hold on Volume- to enable the meeting profile.