Verve IMO S User Manual page 13

Using quick setting buttons
Tap quick setting buttons to activate some features. Swipe to the
left or right on the buttons area to view more buttons. To view more
detailed settings, tap and hold a button.
Applications
Phone
Introduction
Make or answer voice calls.
Contacts
Introduction
Create new contacts or manage contacts on the device.
Messaging
Introduction
Send and view messages by conversation.