Restore as new, but save photos/texts/notes etc?

is possible restore iphone 4 new, however, still able save/keep my:

-texts/photos/notes/contacts/whatsapp msgs/
-maybe game data, that's not important

phone buggy, , on years have downloaded installed/uninstalled many applications/games/etc. hear setting new, great option, keep few things mentioned earlier. fine losing other settings (wifi passwords, etc).

appreciated.


(i jailbroken on ios 5.0.1)

 

photos can copied off , on again.
contacts - synch contact app , synch again.
texts bit more difficult - if jb can copy out db , copy in - not sure if there app can it.
no idea whatsapp msgs.

 

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