Making and receiving SIP calls
Video calling h264, h263, h263+ (supported from OS 4)
Multitasking, receiving calls in background and sleep mode (using TCP connection)
Multitasking, receiving calls in background mode using Keep Awake feature
Integrated contacts from the phone
Loudspeaker
Favorites
Balance information
Destination, rate information
Time, call status logs
Last calls log
Redial
Hold
Compatible with iPod, iPhone 2G/3G /4G & iPad