restoring iphone 4 newb question

[yaynative]

If I restore the iphone 4 to factory settings via itunes, should I restore it from backup afterwards or re-sync everything again? I am trying to trouble shoot battery life that went from fantastic to ok.

 

[Ipheuria]

I've been here before and there's alot of things you can try. You can set t as new(don't restore from backup) then re-sync apps and setup the settings. You can then unsync apps and put back the newer ones leaving off any you might have gotten in older firmware(prior to iOS 4) especially if it hasn't been updated. You should also leave off the customizations like custom ringtones. You could also try telling us your settings for suggestions. Do you have BT on? Wifi? Notifications? how many email accounts are you using? using push? how often is the push and notification intervals?