There are so many devices these days you have to be careful not to have your desire to provide the best experience for all users backfire. An article by google about Android user-agent information pointed out an interesting difference between mobile users and tablet users. Why does this matter to you? If you, as a marketer, or someone with a site needs to assure your users have the best possible experience you need to understand how those dealing with your site operations handle different devices. You may wish to provide a different site experience depending on whether the visitor is using a full size browser on a computer, using their mobile phone (and which kind) and also tablets.
What google points out is that by looking for the user agent “android” does not necessarily mean the visitor is using a mobile phone as they may be using a tablet. In this case it is possible you will want to provide a mobile optimized site to those with android on a phone and a full browser experience to those using android on a tablet which has a much larger screen. Read the full google article above for specifics on how to do this, and/or send it to your tech team.