how to change apple ID on iphone 6

I went through these steps and still have the same problem:

when I want to update apps, the log-in shows my old Apple ID... ???

If you've purchased apps under your old ID, you'll have to delete them and re-purchase them under your new ID. Apps are forever tied to the ID used to purchase them and cannot be transferred to a new ID.

Thank you for answering but this is not the issue.

I use only my new ID now. It is entered in settings on all my devices, including iPhone 6.

But when I go to apps > update, my iPhone automatically fills in my old ID and asks for a password.

I went through all the steps about signing out and signing in again in settings > itunes & app store,

but it does not make a difference.

Did you download/purchase these apps using your old ID - before you changed it to the new one? If you did, follow the instructions in my previous post.

did not work?????? what the **** Apple.....why are things so difficult to do.....I'm beginning to not like Apple products😠