How to completely erase hidden app data on iphone without factory reset?

[onlineseller20]

Today I registered a Facebook account on an iphone
and then delete the app
then reinstalled it - the previous logged out account was still stored on the re-installed fb app

And then I tested with a new apple ID on the same device
installed FB again - the previous FB acc was still shown

This also applies to other apps like spotify ETC

Though I've tried turned off all sync from icloud options &
deleted app data ETC

So how to completely erase hidden stored app data on iphone (whether it's iphone x or SE)
without factory reset? (because it takes too much time)

At the moment only factory reset & logging in to the same account then reinstall the app works - no previous app account shown

So the app data isn't stored on the cloud account, instead should be somewhere hidden on the phone

 

[jamilhossen]

you can watch Youtube video

 

[serpranky]

Clear History and Website Data.

 

[armanmishrax]

i think Log out from iCloud, then delete app

 

[onlineseller20]

you can watch Youtube video

those methods don't work

Clear History and Website Data.

tried - didn't work

i think Log out from iCloud, then delete app

tried with a new iphone / app store account didn't work

 

[Gogol]

Try this:

https://discussions.apple.com/thread/255456926?sortBy=rank

Should do the trick I believe.

 

[onlineseller20]

Try this:

https://discussions.apple.com/thread/255456926?sortBy=rank

Should do the trick I believe.

it's regularly deleting app from iphone function so it didn't work

 

[armanmishrax]

Try resetting iPhone settings (not data) and clear app cache.

 

[Gogol]

it's regularly deleting app from iphone function so it didn't work

hmmm even this one does not work?

https://qr.ae/p2SeyI

Basically iphone settings saves the fb/google accounts separately I believe.

 

[onlineseller20]

Try resetting iPhone settings (not data) and clear app cache.

don't know where to clear app cache

hmmm even this one does not work?

https://qr.ae/p2SeyI

Basically iphone settings saves the fb/google accounts separately I believe.

No account credentials stored there

I even tried deleting the app (eg spotify n FB) completely still didn't work

 

[flotuye]

App data is usually associated with your Apple ID and may not be completely deleted without a factory reset.