Though internet access "on the go" provides advantages to many, such as the ability to obtain information anywhere, the web, accessed from mobile devices, has a large number of limitations, which may vary, depending on the device. These limitations are critical to consider in the design and deployment of your mobile website. These limitations include:

Small screen size
This makes it difficult or impossible to see text and graphics dependent on the standard size of a desktop computer screen.
Lack of windows
On a desktop computer, the ability to open more than one window at a time allows for multi-tasking and for easy revert to a previous page. On mobile web, only one page can be displayed at a time, and pages can only be viewed in the sequence they were originally accessed.
Navigation
Mobile devices do not use a mouse-like pointer, but rather simply an up and down function for scrolling, thereby limiting the flexibility in navigation.
Types of pages accessible
Many sites that can be accessed on a desktop cannot on a mobile device. Many devices cannot access pages with a secured connection, Flash or other similar software, PDFs, or video sites.
Speed
On most mobile devices, the speed of service is often slower than dial-up internet access.
Broken pages
On many devices, a single page as viewed on a desktop is broken into segments, which are each treated as a separate page. Paired with the slow speed, navigation between these pages is slow.
Compressed pages
Many pages, in their conversion to mobile format, are squeezed into an order different from how they would customarily be viewed on a desktop computer.