Making and receiving calls	Android	iOS
Dial extension numbers from mobile phone application 1
Dial extension numbers from mobile phone keypad 1
Dial external numbers from mobile phone application via telephone system 1
Dial external numbers from mobile phone keypad via telephone system 1
Call overlay-display the original caller's number for external calls received through the telephone system
Fast dial-decreases the connection time of external calls made through the telephone system 1
Can set Do Not Disturb-Block incoming (twinned call) to mobile phone
Can set call forward of mobile extension 3
Can set Do Not Disturb on deskphone
Remotely set call forward of deskphone
Dial Through widget
Make and receive calls using an IP softphone installed on mobile device 2
Review and dial from Call History
Search shared address book and dial from results
Search phone contacts and dial from results
Collaboration	Android	iOS
Group extensions by department
User presence view
Extension presence view
Favorites list
Send chat messages to a colleagues desktop client
Review and resume previous chat conversations
Office based colleagues can check if you are engaged on your mobile phone (call routed via telephone system)
Office based colleagues can check if you are engaged on your mobile phone (direct call not via telephone system)
Can update your availability from your mobile device
Can update your absence message from your mobile device
Can see details of a colleague’s current call
Provisioning and Security Features	Android	iOS
Central provisioning through recognition of device
User name and password authentication
SSL Encryption
Other	Android	iOS
Multi language
Make location information available to office based colleagues
Control deskphone from mobile device 4
Feature Code Support

Note: Many features require WiFi or 3G connectivity from mobile device

¹ Requires DISA or Auto Attendant configured on Telephone System
² Features dependent upon IP Softphone 
³ Requires system to be configured as recommended
⁴ Make "call" only