Just took this screenshot with my Android smartphone (up-to-date version).
STERN.de notices that I am using a Smartphone to look at it and is still asking me if I really want to use the mobile view. This was common a few years ago. Still I do not know why this even was a thing.
One of the most common plus points of mobile views for websites is the decreased size to load faster. Thanks to STERN.de, you have to load the website two times.
But I am still really curious about why the website notices that the user is using a smartphone to look at the website and still loads the desktop version with an option to switch over to a view for smartphones. Every technology is there, they just do not redirect to the mobile page, but instead implemented something completely new. Even neglecting the technological part, this is a logical disaster.