when you plug you iphone back up to you itunes itll back it up completly your pics your contacts your messages etc. it wont erase it because itll back it up first..You may loose music though im not sure if it backs that up or not i cant remember that partBesides i share you a article about How To backup all iphone files To Iphone 4?which can help you backup all iPhone contacts and contact photos from iPhone to your computer and keep them safe on the computer. Hopefully this works for all of you like it just worked for me!
Cucusoft iPhone Backup Tool Kits is designed to back up all files from iPhone to computer, including SMS messages&contacts,games,Call list,songs, videos, books, photos and so on.
iMacsoft iPhone to Mac Transfer is designed to back up all files from iPhone to Mac, including SMS messages&contacts,Call list,games,songs, videos, books, photos and so on.
Backup iphone SMS messages and contact to computer(Mac) in :
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