I had used Evernote on an iPhone years ago but that iPhone is no longer used. It's not powered on, the wifi isn't the same network, it doesn't have 4G (because it's not used and not powered on, it is literally sitting in a drawer somewhere so it would have no access to internet).
Yet it still syncs to my account. Every week or so I have to unsync it but it somehow still lists itself as synced.
I've looked at other threads saying this is a security issue but I've changed my password since this started and it's still happening so it's clearly a bug.
It's incredibly frustrating having to unsync my old device every week or so when it really can't possibly be syncing itself.
At this point I'm considering just switching note apps because this is so frustrating and apparently has been an issue for years with Evernote, judging by similar posts.