how can i delete all pics that are in albums on my iphone 4

Are these photos you synced from your computer to your phone (i.e., photo library photos), photos you took on your phone (ie., camera roll photos), photo stream photos, or all of the above?

Also, do you have a windows computer or a mac?

Im having the same exact problem, i synced photos from my laptop to my iphone 4 and now its not giving me the option to delete them. Can u please help?

Photos synced from your computer to your device are deleted by connecting the device to iTunes, going to the Photos tab of your iTunes sync settings, unchecking the folders you no longer want on your phone (or to remove them all, uncheck Sync Photos), then syncing.

Thank you mr randers I have same problem I will try to use ur solution