How to completely clear Instagram from iPhone? I'm having an issue where I'm not able to promote posts on the Instagram app. I was told by Facebook support to delete the app but when I reinstall Instagram after deleting it, all my data and account info is restored. 

It's repopulating the same accounts that I had signed in from that device earlier, so I assumed that it may be some local data. It should ask for a fresh sign-in. 

How do I completely delete the Instagram app and all documents &amp; data associated with it from my iPhone?
Go to Instagram settings and try to find 


  


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under Privacy &amp; Security (it may have changed in new updates but it should still be there). Then you should be able to toggle it off and remove local username and password information. After deleting the app itself, your login information will no longer appear.

How to stop instagram app remembering / auto-filling in username at login screen, when not yet logged in