Why can't I delete website data in iOS 10.3?

Certain website data sites can not be removed. Even after a reset they still remain. This only happened after updating to 10.3.

iPad Air 2 WiFi, Cellular, iOS 10.3

Posted on Apr 2, 2017 4:48 AM

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Posted on Oct 16, 2017 11:54 PM

I found a solution and I originally posted it at Cookies won't delete on iOS. I found this thread has a lot of reviews and I will repost here.


I tested on both ios 11.1 beta 3 on my iphone 8 and 11.0.3 on my ipad.


I have this problem since ios 10 on iphone 5s. After I bought an iphone 8 recently and used the backup from the iphone 5s to restore, the "persistent" cookies migrated to the new device. I also bought an iPad Pro and used the backup from the phone to set it up, the "persistent" cookies migrated to the ipad as well.


All the operations and software are under windows. What you need to do is:


Step 1: Use iTunes or a third party software to make a backup of your device.


Step 2: Use a third party software (I used iMazing because it is the one I found that can edit the backup. This is not supposed to be an advertisement.) to edit the backup. To do this you first need to select the backup you made and click the edit button. Then you need to remove all the files in the editable backup under "File System/Apps/AppDomain-com.apple.mobilesafari/Library/WebKit/WebsiteData/WebSQL/ ". You will be able to see all the cookies that you can not delete at this location. I this the absolute path in the actual file system is /var/mobile/Application/com.apple.mobilesafari/Library/WebKit/WebsiteData/WebSQ L/.


Step 3: Usw iTunes or a third party software to restore the backup.


Note: The backup should not be encrypted.


The solution is quite technical, and I hope apple devs can fix this problem soon.

300 replies

Jun 10, 2017 6:08 PM in response to Gibraltar Bill

This is a well known and lame defect in the Safari app so here is my easy fix... albeit totally bailing on Safari.

1. Download the Firefox web browser. It's free from the App Store and set it up the way you want.

2. Turn Safari off. I.e. From the iPhone home screen>settings>general>restrictions>enable restrictions>four-digit pass code>safari>turn "off".

3. This will automatically remove the Safari icon from the iPhone tool bar. That's nice because you can simply drag the Firefox icon there. Now your our back in business with a more secure browser.

4. Of course you can always turn Safari back on when/if it gets fixed... but you may have decided you don't want it. It's nice to have options!


Hope this helps

Jun 14, 2017 9:54 AM in response to Gibraltar Bill

Got it!


1. Go to cellular and switch off access for safari.

2. Turn off wifi.

3. Safari/Block cookies/ always block

4. Clear all browsing data and history

5. Advanced/ website data

6. Swipe and delete top selection/ remove all website data.

7. Back arrow to safari settings.

8. Go back to step 5. And repeate until they are gone.


This worked for me. Good luck.


When I turned everything back on, then returned to safari lots of them returned. If you leave cellular off for safari and use a different browser it works. For now I will use a different browser until apple works it out.

Jun 15, 2017 7:57 AM in response to Gibraltar Bill

I have a case open with Apple for the past 4 months and no resolution. Approximately 15 websites an counting on my iphone will not delete and have a size of 0KB or 68KB. This website tracking all started when I installed 10.3.0. Then they said it would be fixed in 10.3.1, which was a lie. Then they said it was fixed in 10.3.2, which is another lie.


I never had this issue, until I upgraded to 10.3.0. This is clearly a memory issue with Safari and iPhone needs to fix it!!

If you use Firefox or Chrome, any website is quickly deleted. Also, a complete erase and format of the iPhone does not work.

Jun 19, 2017 4:35 AM in response to Gibraltar Bill

Come on apple corporation, give us an easy fix, you created this monster, we are suppose to easily control our ipad air, now I click edit and delete on a site like auto guide website, I click delete and it doesnt delete, take your ipad back if we can't control them easily, I want my money money back, or give us an upgrade to fix now today, there no excuse for this waste of all our time, our time abuse, I demand a fix upgrade now with this ios belony upgrades, your upgrades are degrades to our ipads, just for one, what about your upgrades for laptops and others, do your upgrades right, or dont them at at all, they ruin our systems we paid alot for. We action now.

Jun 25, 2017 7:22 AM in response to Gibraltar Bill

Spoke with a Level 2 Apple tech yesterday about this and explained that I had an EVERCOOKIE for a sex site in my website data cache that would not go away, despite frequent attempts to "dislodge" it... ( I never even visited it in the first place, when I DID in fact finally click on the address it led me to a blank page saying "under construction"???)


The only thing she told was that they(the Apple Gods) were aware of the situation and the ONLY remedy/work-around is to totally reset your phone,..but don't bother backing it up first,..evidently when you reset and then back up, it brings the EVERCOOKIE with it somehow, so you need to reset as "a new phone" starting from scratch.


PATHETIC if you ask me,...all this technology at our fingertips and this is what we are left doing at the end of the day...a hard reset.

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Why can't I delete website data in iOS 10.3?

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