Does Everything transfer from the LG ENV to the iphone4? (Verizon)?

I was just curious if everything transfers when you switch from a regular phone to the Iphone 4? I will be going in tomorrow to get the iphone and don't want to end up finding out all my photos and contacts will be stuck on my LG ENV. If anyone knows the answer please respond ASAP! otherwise I will be sending all my pictures to my e-mail tonight just to make sure! Thank you