I can do anything and everything I want with it. The functionality I have with the Jawbone works ideally for me. The one thing that the majority of Bluetooth headsets other than voice quality, etc.. is that the majority have a REAL tendency to drop the Phone>Bluetooth connection intermittently... Not with the Jawbone. It NEVER drops its connection to the phone unless the battery runs out.. which BTW.. lasts 2 good days and I average over 5000 minutes per month (I'm a Realtor). It's incredibly light and am not even aware it's there after a minute.
Voice dialing.. I've never really been one to voicedial so I can't really elaborate on that. I've tried it out a few times accidentally and it dialed so i guess it works ok. However, the quality and strength of the actual connection is what really drew me to it in the first place.. aside from every other reason it claims to trounce the other headsets with... Which I've found to be accurate. The sound quality is amazing on both ends.. I have people asking me all the time if I'm on a landline and when I tell them I'm driving, they usually don't believe me. What prompted me to really look into the Jawbone was a friend called me from an NFL football game and one of the teams had just scored... and I could hear him clear as day with hardly ANY background noise. SOLD.
System sounds and navigation come through the Hero's speaker.... I haven;t found them to come through to the Jawbone. then again, this phone has ALOT of options and that may be possible, I just haven;t stumbled across that capability just yet
If you buy one, don't spend $130 on them.. I found mine, brand new in an unopened box, on ebay for $85 including shipping and there's more than likely an even better deal out there since I purchased 4 months ago.