There are lots of iPhone data transfer software online, such as imeshootings imeshootings iPhone Transfer, imeshootings iPhone 4 to mac or PC transfer, just download the trail version and use it.
Take it to the shop where you purchased the iPhone and get them to do it for you.
Bluetooth!
sim card
Use google sync. its the easy way out. source :- http://www.everythingicafe.com/transfer-contacts-calendars-blackberry-iphone/2012/05/01/
The best way is to transfer the Calendar and Contacts to Outlook. The iPhone can then be synced with Outlook. Unfortunately, tasks and memos do not transfer. You will need to find other 3rd party apps that are supported on the iPhone and transfer your data to them. Two examples are: 1. Evernote - This is good for memo. You can export your memos and then import them into Evernote. unfortunately, when I did this, it was a bit tricky. I even had to write a little PERL script to create the format that it wanted. 2. RemembertheMilk - this is a todo application
Just go to your phone store and they should do it for free !!
The iPhone and BlackBerry are both smartphones. The iPhone is produced by Apple, and the BlackBerry is produced by RIM (Research in Motion).
esay blackberry but if it was a iphone 4 then it would be the iphone
If you go to AT+T, they will be able to transfer them for you. They did it for me absolutely free.
blackberry
No u cant get blackberry messenger on a iphone
iPhone 4 is the best compared to Blackberry!