Searched around for an all in one surprise thread for iP4 as well as iOS4 but could not find one that could contribute to the community as a whole. Rules: Post something that you never knew iPhone could do. Something that may benefit others. Please refrain from bashing, and be kind to all thread. This is the "Giving Tree" if you will of iPhone and it's software I'll start: Today, while getting in my car and situated - I put my phone in the cradle (nothing fancy, just a universal vent mount horizontal). Anyway, while I was getting ready to back up, I inadvertently activated Voice control on the phone, and it came through my Bluetooth in my car!!! Before, it just came through the phone which was pointless, and when the call was initiated it then went through the stereo. So now, finally, i can just hold the home button- keep my eye on the road- and just say call .... and bam, woman says multiple numbers, I speak mobile... Calling mobile!!! I believe this is working right through my car speaker as if I am speaking into the phone itself- no need to talk in the phones direction or scream it. Spectacular!!! Anyone with Bluetooth in the car has to give this a go. I do not know if it is a iOS4 thing or a iP4 thing, but it is just splendid in every way. Never used voice control- now I will every time I am on the road. Love it.