how do i transfer my contacts and pictures from my iphone 4 to my new iphone 5 with a new number do i need to upload to laptop and how
How do i upload all my contacts and pics from my iphone4 to laptop
You restore from a backup in order to do what you want to do. Only you know if and how you have been backing up. If you have never backed up, read this and it explains how to transfer the contents from one iOS device to another one.
Transfer content from an iPhone, iPad, or iPod touch to a new device - Apple Support