I found a missing feature for the CUE Phone system. During the phone call session, I can't pull up a phone keypad the only way around this is to use the smart phone key pad. This is a problem when you need to dial an extension or making voice menu choices. Also, if you start a phone call from the handset, you can't switch the audio source from handset to CUE. I have an iPhone4s with OS version 6.0.1. I hope Cadillac can address these two problem with a new update.