You've ever wondered how it looks Facebook his publications in cell phones; Το δημοφιλές social network has different websites for each case. Login from mobile, or connect from your computer? Facebook, like many other websites, will recognize it device your connection, and it will “serve” you the content in the appropriate format. 
So we have Facebok in our well-known domain, but also another Facebok on a subdomain.
htps: //facebook.com/ for large ones displays.
and
https://mbasic.facebook.com/ for mobile device screens.
Why would they need two different sites? There are several reasons for this.
The use of mobile phones to access the internet has increased significantly in recent years. So websites are starting to be built not only for the wide-screens of PCs, but also for the smaller screens of smartphones. Due to the small screen of the devices there are several limitations that must be taken into account by the manufacturers.
Low connection speed
The data transfer speed with 3G connections is significantly lower than the traditional ADSL connections that we use in PCs. So you need a much "lighter" version of the page to make your navigation faster.
High bill billing
Monthly Internet mobile charges are very expensive and javascripts, images and other ingredients that a typical website uses may exceed 1 or 2MB per page. So it's understandable that the bandwidth consumption of your mobile device will be exaggerated.
Difficulty reading content
Traditional web pages are not made for a limited screen size, so they display normal. So the visitor is forced to zoom in and zoom out to easily read the content.
Difficulty navigating
There is a sidebar on iGuRu.gr. The sidebar appears at the side of each page when you visit it from a PC, and at the end of the posts when you visit us from a mobile device. There are, of course, websites that are not optimized for mobile devices and show content together on a small screen. The result is not at all useful.
