Preventing photos from iOS apps saving to camera roll

How can I stop my various iPhone apps esp Whatsapp, Evernote and others from automatically saving a photo to my camera roll photos when I click on it to view?  I've accumulated so many junk photos which I have no want to automatically have saved.  I thought I selected this option but it still continues to save them there.
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u587162Asked:
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darbid73Commented:
Go to Settings > Privacy > Photo and you should have the App name in a list.  Turn off the little check thingy on the right hand side.
u587162Author Commented:
but that prevents the app from being able to access the photos.  What I am trying to do is stop photos going from the app to the camera roll but I dont want to prevent the ability for the app to take photos from the camera roll.....if that makes sense?

By switching off those things shown under privacy, what is it actually doing, preventing total access or just the meta data i.e. data about where the photo was taken etc?
darbid73Commented:
Yes you are right and this will work for any app.

In the case of Whats App in their settings they actually have a "Save Incoming Media" which you can turn off. But not every app is going to be so nice.
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u587162Author Commented:
yes but for whatsapp, I have the "Save incoming media" slider switched off but it is still saving the media......
darbid73Commented:
That is a pity.

So looking at your question and answering it as best as possible.

If the app has a possibility to use media such as images and data, then it depends on the developer where he saves it. He could save it where you have access or he could save it in the apps own file system.  If they are nice they might give you the option to not save it.  In the case of Whats app if the image is not saved then at some stage when you scroll through your conversations you will have blanks where an image once was.

If the developer does not give you some option to stop saving images then you can only globally stop it in the settings.  My guess however is that whats app will simply save them elsewhere if you do not give it access to the photo roll.  I am guessing this because otherwise your chats would not work properly.
Justin BradshawOwnerCommented:
This option should be inside each app's settings. I use Camera+ to fake pictures I don't want in camera roll or photo stream.

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u587162Author Commented:
Justin I'm no sure I understood your last comment, pls explain.
u587162Author Commented:
Thanks, I should have searched the FAQ for Evernote on this and have found a solution which has stopped it.  Also whatsapp is not saving to my camera roll as I thought.
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