Many companies now allow you to apply from both computers and mobile devices.

How can you tell if your job can be applied with a phone or tablet?

         The look of the page itself is the key. See below  

The mobile ready application for most devices window looks like this:

The computer/laptop only application window looks like this:

If the version you are viewing is the computer/laptop version please only use a desktop or laptop computer. A mobile device may not process all information with this version.