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Making and receiving SIP callsVideo 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 featureIntegrated contacts from the phoneLoudspeakerFavoritesBalance informationDestination, rate informationTime, call status logsLast calls logRedialHoldCompatible with iPod, iPhone 2G/3G /4G & iPad