So I got Smart Start installed yesterday. I'm very impressed. System is very useful. So far I've only tested it on my iPhone 4 and wife's iPhone 3GS and guess it will work just fine on 3G as well. I have friends with BB and Android so I'll test those out soon and keep posted.
I did try to change my default password but was unable to. Something funky with the app is going on and not taking my new password. I've tried a few things but still can't get it to work.
The management portal (
http://managesmartstart.com ) is nice. You can use cell tracking for your car from that portal for a cost (unknown to me at this time).
Trunk release requires me to hold it for a few seconds on the remote and that is the same through the app.
It is quite expensive. I've had to get a 3rd key cut for 100$ (cdn) this is on top of the VSS. The device itself came a bit cheap, I ended up getting it all installed for 850 tax in. This included door/trunk release, lights and also anti-grind feature and an additional 4y warranty. I originally didn't want to get it done at FutureShop, but I bargained them and got a lot for little. I got the Viper 5601 and the VSS Addon Module.
My recommendation: Worth it. I go to hockey games a lot during the winter and park a km or more away, leaving my seat warmers on and being able to warm up the car before the games end will be a huge bonus.