IPhone 4 Incorrect Password

[usmanwrites1]

Whenever i try to update app in Iphone 4 error message "incorrect password "

No issues while installing new app because same password works fine

ID is same for installing and updating app

 

[Applejuiced]

Log out and back into the AppStore. If still nothing reset your password.

 

[PsyOpWarlord]

Are you sure what iTunes account was used to get the app the first time? If the above doesn't fix it, then delete the app from your device, go back into the app store and re-download the app while logged into your iTunes account.