Facebook seems to have given some thought to what users were asking for. This should clarify why the function of the iOS app is accessible. The visitor viewing choice is accessible through the iOS app's privacy settings. The social media site's Android and web variants do not have the feature activated.
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Would you like to publish automatically on your Facebook fan page? Would you like to plan your Fanpage messages? If so, then you'll have to read this post to teach you how to plan posts on your Facebook fan page.