cuberope said:
Less size of page, less movements for viewing, no javascript support required, auto-fit to display.
Maybe your phone allows you to browse the site, so as-well as on the pc, but it's optimized for older models, why no?

Administration is not against the existence of this site?

It's alright (with us) as long as your website isn't malicious/doesn't redirect to a malicious website and doesn't attempt to gather personal details of users or their accounts.