Why won't phone name update on Lock Screen?

[Android Central Question]

I saw a tip in a youtube video that you could change the phone name in the about menu, so I changed it.

The new name was shown on the lock screen when I locked the phone, Cool.

However, after changing the name for a second time, the first name I entered remains on the lock screen (The updated name is not shown, even after a restart).

Does anyone have any ideas?

Thanks