Clearing Safari website data does not delete everything - iPhone

One would expect "clear history & website data" from safari would do just that, but that's not always the case.


Often, in my case, there are persistent data that survive the "clear." Usually from Twitter or Facebook, but sometimes from random sites I've visited. I have the Twitter App installed, but not Facebook or other sites that keep showing up.


This doesn't clear them:

Settings>Safari>Clear History and Website Data


Neither does this:

Settings>Safari>Advanced>Website Data>Remove All Website Data


This does work:

Individually swiping left on the persisting data and selecting "delete"


This, IMO, is an unusual behavior since the first method SHOULD do this job.

Most people won't go to ...advanced>website data> to double check if the clearing worked.


I suspect these are similar to "databases" that remain in Desktop Safari and have to be manually removed from

user/library/safari/databases (I had to remove a homedepot.com data that would keep reappearing.)


So the Question: Is this a normal behavior? Does this happen to others?

iPhone 6 Plus, iOS 10.2.1

Posted on Mar 25, 2017 12:18 AM

Reply
194 replies

Jun 9, 2017 9:10 AM in response to ParhamS

Same problem occurs on the Mac OS X version of Safari.


  • macOS Siera 10.12.4
  • Safari Version 10.1 (12603.1.30.0.34)


Steps to Reproduce


  • Go to Safari > Preferences... > Privacy > Manage Website Data...
  • A list of websites appear, usually the datatype is "Databases"
  • Click "Remove All..."


Expected Behavior

Website data list is removed and list is empty until websites that store data are loaded again


Actual Behavior

  • The list is temporarily replaced with a status message "Loading Website Data..."
  • Then the list is repopulated with the same website data, this is without visiting those websites again.

Aug 14, 2017 8:01 AM in response to GCSS-MC

Yes, it probably hasn't been addressed yet, because it isn't a critical or even an important bug.


Years ago I worked for a large computer manufacturer. We had a bug tracking system with just 4 categories:


  1. Critical - Prevents users from using all or part of the application
  2. Severe - Similar to Critical, but there is a published workaround or temporary patch
  3. Annoying - Does not affect operation of the application, but it bothers users
  4. Interesting - Does not affect anything, but it looks funny


Apple's system has many more categories, of course, but this one is somewhere between 3 & 4. The reason I say that is explained in this excellent article: http://www.thesafemac.com/the-myth-of-the-dangerous-cookie/

Apr 21, 2017 9:53 AM in response to ParhamS

Yes, Apple needs to do something about these Super cookies or Ever Cookies. The companies are using these to put more and more cookies in various places in the folders open so your browser can write to them. We have to find a way to stop them or corupt the data. The real danger is when hackers start using these super cookies, so it's very dangerous. Ransomware will really have a field day!

Apr 21, 2017 3:05 PM in response to Gus

Exactly the same problem and have s by this to apple feedback:


I have experienced a problem trying to open websites and so, as I have done previously, I went into settings-safari-clear history and website data. And then advanced-website data and used all three ways of deleting these cookies (edit and delete; swiping right and delete; delete all). None of them worked the cookies have remained. I have experienced this in the past and turning the iPhone's power off and then on again worked as the cookies had disappeared when I went back into the advanced settings. However this time, it hasn't worked and no matter how I try, I cannot delete some stubborn cookies. Please help

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Clearing Safari website data does not delete everything - iPhone

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