If your contacts are connected to your Google account you shouldn't have to worry about porting them.

 

go to your gmail account on your standard PC, in the upper left you'll see it says "Gmail" with a small down arrow just to the right, click on that arrow and in the drop down select "Contacts"

all your contacts that are on your phone, attached to your google account, including the multiple numbers, emails, address, etc. are all there. you can modify them, etc.

on your new phone, when you link your account, these will all be downloaded.