Safari cookie cache on Iphone & reappearing cookies

I have an Iphone by gift. I started deleting some cookies from Safari browser manually. It appears that some cookies from my other browsers are appearing in the same Safari cookie area as well, as if they are sharing a space to save cookies in common.
I have noticed that sometimes as much as 24 hours later some cookies will reappear. It becomes rather obvious when you go to a Starbucks & manually delete cookies & haven't been back there. Suddenly you find Starbucks cookies back in your Safari cookie area.
After some thought it occurred to me that this might be related to another browser saving or restoring webpages when I close it with webpages open. But I suspect that I am correct that some of my other mobile browsers may be sharing the Safari browser cache.
For me, it's not such a big thing, simply a curiosity. And so I am wondering if someone here may know how such things work & if they might have some educational feedback. Like I said, perhaps I have already solved this mystery on my own?

 

Search "ios privacy" on youtube, there are some helpful guides. Not sure if they will help, but they might.

 

Thanks for the thought... I may take a quick look there. I am thinking that this information might be a bit more than most people care to know so it is probably not going to appear in a standard guide.

 

Safari has a history of this problem. If you would search reappearing cookies on Safari, you'll see a lot of references to this issue, I think going back to Safari 4.
Some people said it's related to iTunes, others have different ideas.
I'm sorry I'm not giving links, but you'll see lots of different websites discussing this and possible fixes.
It does not work to just delete the cache like Apple says.

 

I took your advise & this appears to be true. It is amusing to see various people wondering why they are bothering to delete cookies if they are simply going to reappear. In the case of mobil phones with multiple browsers (as well as multiple apps) I believe that there may be, hmmm, multiple answers here. I noticed cookies, for example appearing in Safari after using certain Iphone apps.

Honestly, I am not the kind of person to sweat from this issue.
When you hook up to the internet, I am fairly certain that any internet provider is onto any track that you take. If you are net wandering on your phone, delete cookies, doesn't it seem plausible that anyone might already have... your phone number? This, if true, would suggest that by now any number of organizations out there should be able to draw a fairly wild & accurate picture of who I am. And unless I throw my phone into the trash & change phone numbers each time that I enter the web, it seems that I could be very recognizable when I return to a webpage. You might delete cookies, but it's like a person that knows your face. You return to the page & they might have a file on #773-000-0000. So there is another question to add to the worry about cookie privacy. But I don't know if this is really true or not.

Please excuse what may be a divergence from the main subject here.
Thanks again for the interesting feedback.